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SOU Akira
Graduate School of Maritime Sciences / Department of Maritime Sciences
Professor

Researcher basic information

■ Research Keyword
  • X-Ray visualization
  • Fuel Injection
  • Gas Turbine
  • Offshore Wind Turbine
  • SPring-8
  • Visualization
  • Numerical Simulation
  • Thermal Fluid Dynamics
  • Liquid Atomization
  • Cavitation
  • Multi-Phase Flow Dynamics
  • Fluid Engineering
■ Research Areas
  • Aerospace, marine, and maritime Engineering / Aerospace engineering / Gas Turbine
  • Aerospace, marine, and maritime Engineering / Marine and maritime engineering / Floating Offshore Wind Turbine
  • Manufacturing technology (mechanical, electrical/electronic, chemical engineering) / Fluid engineering
■ Committee History
  • 2018 - Present, Institute for Liquid Atomization and Spray Systems - Asia (ILASS-Asia), Board Member
  • 2015 - Present, Begell House, Atomization and Sprays, Editorial Board Member
  • 2009 - Present, 日本マリンエンジニアリング学会, 査読委員
  • 2009 - Present, 日本マリンエンジニアリング学会, ディーゼル機関研究委員会 委員
  • 2007 - Present, 日本機械学会, 能力開発機構計算力学技術者認定事業委員会
  • 2003 - Present, 日本液体微粒化学会, 理事
  • 2000 - Present, 日本機械学会, RC分科会 委員、幹事、班長など(RC197, 203, 215, 228, 284, 292, 299)
  • 2023 - Mar. 2025, ILASS-Japan, President
  • Jul. 2022 - Jul. 2024, The 16th International Conference on Liquid Atomization and Spray Systems (ICLASS 2024), Scientific Committee
  • 2019 - 2023, 日本液体微粒化学会, 副会長、研究部会長
  • 2018 - 2021, ILASS-Japan, Vice-president
  • 2019 - 2020, Annual Conference on Liquid Atomization and Spray Systems – Asis 2020 (ILASS-Asia 2020), Advisory and Scientific Committee
  • 2015 - 2019, 日本液体微粒化学会, 第４研究委員会「液膜式気流微粒化」委員長
  • 2013 - 2015, 13th International Conference on Liquid Atomization and Spray Systems (ICLASS 2015) - Tainan, Taiwan, Scientific Committe Member
  • 2012, 日本液体微粒化学会, 出版部会長、会誌委員長、校閲委員長、研究部会長、国際部会員
  • 2009 - 2011, 熱流動部会 編集委員会 委員長, 日本原子力学会熱流動部会 編集委員会 委員長
  • 2008 - 2011, 日本原子力学会, 編集委員会 委員
  • 2009 - 2010, 日本マリンエンジニアリング学会, CFD研究委員会 委員
  • 2007 - 2009, Mini-Symposium on Cavitation, 11th International Conference on Liquid Atomization and Spray Systems (ICLASS 2009) -Vail, Colorado, USA, Chairman
  • 2007 - 2009, 日本原子力学会, 熱流動部会 広報委員会 委員長
  • 2004 - 2008, 日本混相流学会, 編集委員会 委員
  • 2003 - 2005, 日本伝熱学会, 熱エネルギ有効利用技術研究会 幹事補佐
  • 2001 - 2004, International Conference on Multiphase Flow 2004, Local Organization Committee Member
  • 2001 - 2003, 日本伝熱学会, エネルギ応用技術研究会 幹事補佐
  • 1999 - 2001, 日本伝熱学会, 熱流動技術研究会 幹事補佐
  • 日本機械学会, 計算力学部門 評議員
  • 日本原子力学会, 編集委員
  • 日本混相流学会, 評議員
  • 日本伝熱学会, 評議員
  • 日本機械学会, 論文集編集委員会 校閲委員
  • 日本機械学会, 関西支部 気液二相流技術調査検討懇話会 委員
  • 日本機械学会, 関西支部 代議員
  • 日本機械学会, 計算力学部門運営委員
  • 日本機械学会, 熱工学部門 運営委員会 委員

Research activity information

■ Award
  • Dec. 2016 日本液体微粒化学会, 第25回微粒化シンポジウム優秀講演賞, 並行気流による平面液膜の分裂過程
    川畑諒太, 宋明良

  • Mar. 2016 日本エネルギー学会, 平成27年度日本エネルギー学会奨励賞, ミニサックノズルの各種形状因子がキャビテーション流れに及ぼす影響
    南 慎一郎, SOU AKIRA
    Japan society

  • Dec. 2015 日本液体微粒化学会, 第24回微粒化シンポジウム優秀講演賞, 平面液膜式気流微粒化過程の可視化実験
    大島 逸平, SOU AKIRA
    第24回微粒化シンポジウム2015において優秀な講演を行った
    Japan society

  • Oct. 2014 日本混相流学会, 混相流シンポジウム2014優秀講演賞
    田中彩娜, 宋明良

  • May 2010 日本船舶海洋工学会, KFR-Jr & KSSG-Jr合同講演会優秀賞, 気泡と衝撃波の相互作用に関する数値解析
    中田昌宏, 宋明良

  • Mar. 2010 日本機械学会, ベストプレゼンテーションアワード, ディーゼル排ガス中の粒子状物質の触媒付着
    粟田和輝, 宋明良

  • Jan. 2006 日本原子力学会 熱流動部会, 日本原子力学会熱流動部会業績賞, 先進サブチャンネル解析コード開発
    SOU AKIRA
    先進サブチャンネル解析コード開発
    Others

  • Dec. 2004 日本液体微粒化学会, 第13回微粒化シンポジウム優秀講演賞, ノズル内キャビテーション流れの可視化とLDV計測
    SOU AKIRA
    第13回微粒化シンポジウムで優秀な講演を行った
    Japan society

  • Mar. 1995 日本機械学会, JSME Medal for Outstanding Paper 1995, 垂直正方形ダクト内気泡流の三次元詳細解析
    SOU Akira

  • Jul. 1994 日本混相流学会, 日本混相流学会ベストプレゼンテーション賞, ダクト内流れ中単一気泡の運動に及ぼす各種無次元数の影響
    SOU AKIRA
    第13回混相流シンポジウム'94において優秀な講演
    Japan society

■ Paper
  • Recent Technology Development for Marine Engines: Perspective of Injection, Cavitation, New Fuels and Others (Keynote Lecture)
    Akira Sou
    Aug. 2024, Proc. 4th Maritime Safety International Conference (MASTIC 2024), English
    [Invited]
    International conference proceedings

  • The Deformation and Atomization Process of a Planar Liquid Sheet with the Fluctuation of Cocurrent Air Flow
    Hiroki Kato, Kanato Mori, Akira Sou, Ippei Oshima, Kodai Kato, Kazuaki Matsuura
    Jun. 2024, Proc. 16th Triennial International Conference on Liquid Atomization and Spray Systems (ICLASS 2024) - Shanghai, China, English
    [Refereed]
    International conference proceedings

  • Modeling on Wall Wetting Phenomenon in Coaxial Twin-Fluid Atomizer
    Rena Majima, Akira Sou, Yoshitaka Wada, Yoshiharu Ueki
    Corresponding, Jun. 2024, Proc. 16th Triennial International Conference on Liquid Atomization and Spray Systems (ICLASS 2024) - Shanghai, China, English
    [Refereed]
    International conference proceedings

  • A Journey of Discovery in Cavitating Diesel Fuel Injector (Plerary Lecture)
    Akira Sou
    Jun. 2024, Proc. 16th Triennial International Conference on Liquid Atomization and Spray Systems (ICLASS 2024), English
    [Invited]
    International conference proceedings

  • Ippei Oshima, Akira Sou
    Last, Apr. 2024, Journal of Fluid Mechanics, 984, English
    [Refereed]
    Scientific journal

  • Proposal of Fuel Injector to Induce Swirling Flow by Transparent Injector Model Experiments
    Moeka Matsuo, Akira Sou, Yoshitaka Wada, Yoshiharu Ueki
    Corresponding, Oct. 2023, Proc. the 23rd Annual Conference of the Institute for Liquid Atomization and Spray Systems -Asia (ILASS-Asia 2023), English
    International conference proceedings

  • Effects of Cocurrent Air Velocity Oscillation on the Deformation and Atomization Characteristics of a Planar Liquid Sheet
    Kanato Mori, Hiroki Kato, Akira Sou, Ippei Oshima, Kodai Kato, Kazuaki Matsuura
    Corresponding, Oct. 2023, Proc. the 23rd Annual Conference of the Institute for Liquid Atomization and Spray Systems -Asia (ILASS-Asia 2023), English
    International conference proceedings

  • Mechanistic Model on Droplet Diameter of Air- Blasted Liquid Film
    Ippei Oshima, Akira Sou
    Oct. 2023, European Meeting on Liquid Atomization and Spray Systems 2023 (ILASS Europe 2023), English
    [Refereed]
    International conference proceedings

  • Samsu Dlukha Nurcholik, Akira Sou, Takashi Miwa, Mikimasa Kawaguchi, Yuhei Matsumoto, Keiya Nishida, Yoshitaka Wada, Yoshiharu Ueki
    Corresponding, Feb. 2023, Journal of Fluid Science and Technology, 18(2) (2), 1 - 11, English
    [Refereed]
    Scientific journal

  • Analysis of Unsteady Atomization Process of Liquid Jet Flow of Multi-Hole Fuel Injector; 2nd Report on the Application of Proper Orthogonal Decomposition Method
    酒井七海, 倉本洋海, 倉本洋海, 西尾茂, 宋明良, 西田恵哉
    2023, 可視化情報シンポジウム(CD-ROM), 51st

  • Analysis of Primary Flow Field Structure in Multi-Hole Fuel Injector by Means of Proper Orthogonal Decomposition Method; 2nd Report on the Evaluation of Unsteady Behavior
    今城有貴, 翁浩雲, 翁浩雲, 西尾茂, 宋明良, 西田恵哉
    2023, 可視化情報シンポジウム(CD-ROM), 51st

  • Numerical Analysis on the Breakup Process of Twin-Fluid Atomizers
    間島玲奈, 宋明良, 和田好隆, 植木義治
    2023, 微粒化シンポジウム講演論文集(CD-ROM), 32nd

  • Atomization Mode and Spray Characteristics of Twin-Fluid Atomizers
    杉拓海, 宋明良, 和田好隆, 植木義治
    2023, 微粒化シンポジウム講演論文集(CD-ROM), 32nd

  • Equation of Motion of an Offshore Cylindrical Structure with a Column
    山口生真, 宋明良
    2023, 日本船舶海洋工学会講演会論文集(CD-ROM), (37) (37)

  • Akira Sou, Samsu Dlukha Nurcholik, Yoshitaka Wada, Yoshiharu Ueki, Hideaki Yokohata
    Jan. 2023, Multiphase Science and Technology, 35(1) (1), 69 - 86, English
    [Refereed]
    Scientific journal

  • Ito Juri, Sou Akira
    The Japan Society of Naval Architects and Ocean Engineers, Nov. 2022, Conference Proceedings The Japan Society of Naval Architects and Ocean Engineers, 35(35) (35), 549 - 555, Japanese

  • Yamaguchi Ikuma, Sou Akira
    The Japan Society of Naval Architects and Ocean Engineers, Nov. 2022, Conference Proceedings The Japan Society of Naval Architects and Ocean Engineers, 35(35) (35), 557 - 563, Japanese

  • String Cavitation Flow in Multi-Hole Fuel Injector and Spray
    Akira Sou
    Oct. 2022, Proc. European-American-Japanese Two-Phase Flow Group Meeting 2022, English
    [Invited]
    International conference proceedings

  • Single String Cavitation and Swirling Flow in a Nozzle and a Hollow-Cone Spray
    Dongping Shen, Takashi Miwa, Akira Sou, Yoshitaka Wada, Yoshiharu Ueki, Hideaki Yokohata
    Oct. 2022, Proc. 22nd Annual Conference on Liquid Atomization and Spray Systems - Asia (ILASS-Asia 2022), English
    [Refereed]
    International conference proceedings

  • Vortex Flow Pattern with Single or Twin String Cavitation in Multi-Hole Mini-Sac Diesel Injector and Sprays
    Samsu Dlukha Nurcholik, Takashi Miwa, Akira Sou, Mikimasa Kawaguchi, Yuhei Matsumoto, Keiya Nishida, Yoshitaka Wada
    Corresponding, Oct. 2022, Proc. 22nd Annual Conference on Liquid Atomization and Spray Systems - Asia (ILASS-Asia 2022), English
    [Refereed]
    International conference proceedings

  • Prediction of Cavitation Erosion in Diesel Fuel Injector
    Natsuha Okami, Akira Sou, Toshiyuki Saito
    Oct. 2022, Proc. 22nd Annual Conference on Liquid Atomization and Spray Systems - Asia (ILASS-Asia 2022), English
    [Refereed]
    International conference proceedings

  • Formation of Vertical Wrinkles and Atomization Process after Bag Breakup of Planar Liquid Sheet by Parallel Air Flows
    金月翔哉, 宋明良, 大島逸平
    2022, 微粒化シンポジウム講演論文集(CD-ROM), 31st

  • Proposal of Fuel Injector to Induce Swirling Flow by Rectangular Channel Experiments
    松尾萌花, 宋明良, 和田好隆, 植木義治
    2022, 微粒化シンポジウム講演論文集(CD-ROM), 31st

  • Reduction in Accumulation and Enhancement in Removal of Deposit at the Inner Wall of Fuel Injector
    坂東太郎, 宋明良, 和田好隆, 植木義治
    2022, 微粒化シンポジウム講演論文集(CD-ROM), 31st

  • Numerical Analysis of Swirling Flow during Valve-Closing Process of Mini-Sac Nozzle
    片山智貴, 宋明良, 和田好隆, 植木義治
    2022, 微粒化シンポジウム講演論文集(CD-ROM), 31st

  • Analysis of steady atomization process of liquid jet flow of multi-hole fuel injector
    倉本洋海, 西尾茂, 宋明良, 西田恵哉
    2022, 可視化情報シンポジウム(CD-ROM), 50th

  • Ito Juri, Sou Akira
    The Japan Society of Naval Architects and Ocean Engineers, Nov. 2021, Conference Proceedings The Japan Society of Naval Architects and Ocean Engineers, 33(33) (33), 401 - 405, Japanese

  • Okawa Ryoya, Sou Akira
    The Japan Society of Naval Architects and Ocean Engineers, Nov. 2021, Conference Proceedings The Japan Society of Naval Architects and Ocean Engineers, 33(33) (33), 385 - 390, Japanese

  • Prediction Model for Liquid Sheet Transversal Oscillation
    Ippei Oshima, Akira Sou
    Oct. 2021, The 18th International Conference on Flow Dynamics (ICFD2021), English
    International conference proceedings

  • New Dimensionless Numbers Governing Cavitation in Diesel Multi-Hole Mini-Sac Nozzles and Sprays
    Samsu Dlukha Nurcholik, Takashi Miwa, Masashi Wakisaka, Kazushi Kimura, Akira Sou, Keiya Nishida, Mikimasa Kawaguchi, Yuhei Matsumoto, Yoshikata Wada
    Sep. 2021, Proc. of 15th Triennial International Conference on Liquid Atomization and Spray Systems (ICLASS 2021), 29th, English
    [Refereed]

  • Reconstruction of Spatio-Temporal Flow Field by Means of Standardization and Model-Based Approach
    西尾茂, 山越玲勇, 宋明良, 西田恵哉
    2021, 可視化情報シンポジウム(CD-ROM), 49th (Web)

  • A study on the Relationship between Cavitation Flow in Fuel Injector and Deposit
    坂東太郎, 脇坂優志, 宋明良, 和田好隆, 植木義治, 横畑英明
    2021, 微粒化シンポジウム講演論文集(CD-ROM), 30th

  • High-Speed Image Analysis on the Formation of Sub-Ligaments from the Bag Rim and their Breakup after the Bag Rupture
    金月翔哉, 野尻智輝, 宋明良, 大島逸平
    2021, 微粒化シンポジウム講演論文集(CD-ROM), 30th

  • Analysis of Primary Flow Field Structure in Multi-Hole Fuel Injector
    翁浩雲, 西尾茂, 宋明良, 西田恵哉
    2021, 可視化情報シンポジウム(CD-ROM), 49th (Web)

  • X-Ray High-Speed Image Analysis of String Cavitation in Mini-Sac Nozzle and Hollow-Cone Spray
    SHEN Dongping, 三輪誠, 宋明良, 和田好隆, 植木義治, 横畑英明
    2021, 微粒化シンポジウム講演論文集(CD-ROM), 30th

  • Atomization and Deformation of a Planar Liquid Sheet by Cocurrent Air Flows (Estimation of Droplet Diameter Distribution Based on Spatial Distributions of Bag Thickness)
    野尻智輝, 金月翔哉, 大島逸平, 宋明良
    2021, 微粒化シンポジウム講演論文集(CD-ROM), 30th

  • Visualization measurement experiment of internal flow and spray angle of multi-hole diesel fuel injector
    脇坂優志, 宋明良, 三輪誠, 川口幹祐, 松本有平, 西田恵哉, 中島聖, 和田好隆
    2021, 微粒化シンポジウム講演論文集(CD-ROM), 30th

  • Ippei Oshima, Akira Sou
    Begell House, 2021, Multiphase Science and Technology, 33(2) (2), 53 - 67, English
    [Refereed]
    Scientific journal

  • Okawa Ryoya, Sou Akira
    The Japan Society of Naval Architects and Ocean Engineers, Nov. 2020, Conference Proceedings The Japan Society of Naval Architects and Ocean Engineers, 31(31) (31), 333 - 341, Japanese

  • Four Dimensional Cavitation Flow in Multi-Hole Fuel Injector and Spray Behavior
    Katsuhisa NAKAMICHI, Masashi WAKISAKA, Kazushi KIMURA, Akira SOU, Takashi MIWA, Keiya NISHIDA, Yoshitaka WADA, Yoshiharu UEKI, Hideaki YOKOHATA
    Corresponding, Oct. 2020, Prof. 21st Annual Conference on Liquid Atomization and Spray Systems-Asia (ILASS-Asia 2020), 28th, English
    [Refereed]

  • Atomization Process of a Planar Liquid Sheet by Co-current Air Flows : Visualization of Liquid Sheet Atomization and Development of Droplet Diameter Model
    Ippei Oshima, Akira Sou
    Last, 日本液体微粒化学会, Jul. 2020, Atomization, Journal of the ILASS-JAPAN, 29(97) (97), 64 - 73, Japanese

  • Hiroaki Munemura, Shigeru Nishio, Akira Sou, Keiya Nishida, Yoshitaka Wada, Yoshiharu Ueki, Hideaki Yokohata
    Begell House, Apr. 2020, Atomization and Sprays, 30(4) (4), 287 - 300, English
    [Refereed]
    Scientific journal

  • Bag Formation and Breakup of Planar Liquid Sheet by Cocurrent Air Flows
    OISHI Kazuki, IMAI Tomoki, NISHIYAMA Shingo, OSHIMA Ippei, SOU Akira
    Dec. 2019, Proc. 20th Annual Conference on Liquid Atomization and Spray Systems – Asia (ILASS-Asia), English
    [Refereed]
    International conference proceedings

  • Ishikawa Hinako, Sou Akira
    The Japan Society of Naval Architects and Ocean Engineers, Nov. 2019, Conference Proceedings The Japan Society of Naval Architects and Ocean Engineers, 29(29) (29), 169 - 173, Japanese

  • Christophe Dumouchel, Jean-Bernard Blaisot, Fakhry Abuzahra, SOU AKIRA, Gilles Godard, Said Idlahcen
    Aug. 2019, Experiments in Fluids, 60(8) (8), English
    [Refereed]
    Scientific journal

  • Spatio-Temporal Analysis of Correlation between the Cavitation Forming inside Injector and the Progress of Liquid Jet Atomization
    MUNEMURA Hiroaki, NISHIO Shigeru, SOU Akira, NISHIDA Keiya, WADA Yoshitaka, UEKI Yoshiharu, YOKOHATA Hideaki
    Jun. 2019, Proc. of the 15th International Conference on Fluid Control, Measurements and Visualization, pp.175.1 - 175.10, English
    International conference proceedings

  • Cavitation Impact on a Nozzle Internal Flow Characteristics: Experimental Study and Numerical Simulation
    Fakhry Abuzahra, Aqeel Ahmed, Christophe Dumouchel, Jean-Bernard Blaisot, Francois-Xavier Demoulin, SOU AKIRA, Gilles Godard, Said Idlahcen
    Jun. 2019, Proc. 10th International Conference on Multiphase Flow (ICMF 2019), English
    [Refereed]
    International conference proceedings

  • Rubby Prasetya, SOU AKIRA, MOON Seoksu, Raditya Hendra Pratama, WADA Yoshitaka, YOKOHATA Hideaki
    May 2019, Atomization and Sprays, 29(2) (2), 123 - 141, English
    [Refereed]
    Scientific journal

  • Rubby Prasetya, SOU AKIRA, WADA Yoshitaka, YOKOHATA Hideaki
    The Japan Society of Mechanical Engineers, May 2019, Journal of Fluid Science and Technology, 14(1) (1), 1 - 12, English
    [Refereed]
    Scientific journal

  • Rubby Prasetya, SOU AKIRA, MOON Seoksu, Raditya Hendra Pratama, WADA Yoshitaka, YOKOHATA Hideaki
    Apr. 2019, Atomization and Sprays, 29(1) (1), 59 - 78, English
    [Refereed]
    Scientific journal

  • Prasetya Rubby, SOU AKIRA, OKI Junichi, NAKASHIMA Akira, NISHIDA Keiya, WADA Yoshitaka, UEKI Yoshiharu, YOKOHATA Hideaki
    IMechE, Mar. 2019, International Journal of Engine Research, 20(1) (1), 1 - 14, English
    [Refereed]
    Scientific journal

  • Visualization of Rupture Process of Liquid Film by Droplet Impact
    大石一稀, 大島逸平, 今井智貴, 宋明良
    2019, 航空原動機・宇宙推進講演会講演論文集(CD-ROM), 59th

  • Analysis of String Cavitation Formation and Three-Dimensional Flow Structure in Fuel Injectors
    NAKAMURA Ryoto, NISHIO SHIGERU, SOU AKIRA
    Present paper describes the correlation between string cavitation formation and flow field structure in a mini-sac type multi-hole fuel injector. Tomographic PIV (Tomo-PIV) was employed for the velocity field measurement inside the sac-area, and the 3-D flow structure was analyzed. A high-speed camera system was also used to overcome the low sampling frequency of Tomo-PIV. T
    Visualization Society of Japan, Sep. 2018, Proceedings of the 46th Symposium on Visualization, Vol.38(Suppl. No.1) (Suppl. No.1), Japanese
    Symposium

  • Structure Change of Liquid Jet in Air Crossflows
    MUNEMURA Hiroaki, NISHIO SHIGERU, SOU AKIRA
    Present paper describes the effects of air crossflow on the structure change of liquid jet and its atomization process. Visualization and image analysis were performed, and quantitative discussions were made. An evaluation index for the progress rate of atomization was applied, and the change of jet structure was clarified. PIV analysis was also made, and the correlation bet
    Visualization Society of Japan, Sep. 2018, Proceedings of the 46th Symposiun on Visualization, Vol.38(Suppl. No.1) (Suppl. No.1), Japanese
    Symposium

  • OSHIMA Ippei, SOU AKIRA
    Sep. 2018, International Journal of Multiphase Flow, 110, 179 - 188, English
    [Refereed]
    Scientific journal
    Link to Kobe Univ. Repository (Kernel)

  • X-Ray High Speed Visualization and Measurement of Cavitation Flow in a Nozzle under Transient Injection Condition
    KOTANI Kazuya, Prasetya Rubby, NISHIHARA Ayumi, MIWA Takashi, SOU AKIRA, MOON Seoksu, Raditya Hendra Pratama, WADA Yoshitaka, UEKI Yoshiharu, YOKOHATA Hideaki
    ILASS International, Jul. 2018, Proc. 14th Triennial International Conference on Liquid Atomization and Spray Systems (ICLASS 2018), 26, 23 - 27, English
    [Refereed]
    International conference proceedings

  • Influence of Cavitation on Textural Atomization
    Fakhry Abuzahra, Christophe Dumouchel, Jean-Bernard Blaisot, SOU AKIRA, Gilles Godard
    ILASS International, Jul. 2018, Proc. 14th Triennial International Conference on Liquid Atomization and Spray Systems (ICLASS 2018), English
    [Refereed]
    International conference proceedings

  • High Speed Visualization of String Cavitation and Tomographic Stereo PIV in a Multi-Hole Diesel Injector
    DEGUCHI Shinichiro, Prasetya Rubby, NAKAMURA Ryoto, MIWA Takashi, SOU AKIRA, OKI Junichi, NAKASHIMA Akira, OGATA Yoichi, NISHIDA Keiya, WADA Yoshitaka, UEKI Yoshiharu, YOKOHATA Hideaki
    ILASS International, Jul. 2018, Proc. 14th Triennial International Conference on Liquid Atomization and Spray Systems (ICLASS 2018), English
    [Refereed]
    International conference proceedings

  • X-Ray Imaging of Transient Cavitation Motion in Nozzles under Steady Injection Condition
    Prasetya Rubby, MIWA Takashi, SOU AKIRA, MOON Seoksu, WADA Yoshitaka, UEKI Yoshiharu, YOKOHATA Hideaki
    Jun. 2018, Proc. 10th International Cavitation Symposium (CAV2018), English
    [Refereed]
    International conference proceedings

  • HIRAI Takayuki, SOU AKIRA, NIHEI Yasunori
    Jun. 2018, Proc. ASME 2018 37th International Conference on Ocean, Offshore and Arctic Engineering (OMAE2018), 6, OMAE2018 - 77821, English
    [Refereed]
    International conference proceedings

  • MASHIDA Makoto, SOU AKIRA
    Fuel spray characteristics are affected by cavitation in fuel injector nozzles. We calculated the gas volume fractions of cavitation in nozzles and the liquid volume fractions of liquid jet based high-speed images of cavitation with two hole lengths nozzles and liquid jet. We quantitatively analyzed the sequential gas and liquid volume fractions in order to clarify deformation processes of liquid jet affected by cavitation. As a results, the difference of the nozzle hole lengths affects scale of cavitation clouds shedding near the hole exit and also scale of deformation of liquid jet boundaries between liquid jet and the ambient.
    Society of Automotive Engineers of Japan, Apr. 2018, 自動車技術会論文集, 49(2) (2), 217 - 222, Japanese
    [Refereed]
    Scientific journal

  • MASHIDA Makoto, SOU AKIRA
    Fuel spray characteristics are affected by cavitation flows in a fuel injector nozzle. Cavitation in nozzles with various holes lengths and jets are visualized. As a result, we find that different flow characteristics of nozzles with a short hole length and a long hole length result in different characteristics of cavitation in the nozzles and the liquid jets. Especially in a super cavitation condition, cavitation characteristics of the nozzle with the short hole length are unstable from the hole inlet to the exit and large scale discharges of cavitation near the nozzle hole exit influence large scale deformations of the liquid jet.
    Society of Automotive Engineers of Japan, Apr. 2018, 自動車技術会論文集, 49(2) (2), 212 - 216, Japanese
    [Refereed]
    Scientific journal

  • X-Rar High Speed Visualization and Measurement of Cavitation Flow in Fuel Injector
    SOU AKIRA
    Apr. 2018, Proc. 8th European-Japanese Two-Phase Flow Group Meeting (EJTPFGM 2018), English
    [Invited]
    International conference proceedings

  • X-ray Measurement of Local Liquid Velocity and Volume Fraction in Cavitation Flow inside a Nozzle
    西原安優実, 小谷和也, PRASETYA Rubby, 三輪誠, 宋明良, MOON Seoksu, 和田好隆, 植木義治, 横畑英明
    2018, 微粒化シンポジウム講演論文集(CD-ROM), 27th

  • Response Characteristic of Cavitation Flow in a Nozzle during Valve Opening
    奥中勇太, 笠原巧, 山本将貴, 宋明良, 和田好隆, 植木義治, 横畑英明
    2018, 微粒化シンポジウム講演論文集(CD-ROM), 27th

  • Nakahigashi Hayato
    Marine creatures in ballast water of a ship may destroy the marine ecosystem. Abe et al. proposed a ballast water treatment system using the interaction between air bubbles and shock waves. We develop a numerical method on compressible air-water two-phase flow by using the Volume of Fluid Method (VOF) and Ghost Fluid Method (GFM), and the Riemann solver with surface tension term, we simulate the interaction with and without surface tension with various bubble radius. As a result, we clarify the surface tension effect for small micro-bubble.
    The Japan Society of Mechanical Engineers, 2018, The Proceedings of the Fluids engineering conference, 2018, OS9-10, Japanese

  • Strategy to Explore and Predict Turbulent Cavitation Flow in Fuel Injector & Spray
    SOU AKIRA
    Jan. 2018, Proc. 10th Engine Research Forum (ERF 2018), English
    International conference proceedings

  • OSHIMA Ippei, SOU AKIRA
    Japan Society for Aeronautical and Space Sciences, Aerospace Technology, Jan. 2018, Trans, Japan Society for Aeronautical and Space Sciences, Aerospace Technology, 16(4) (4), 319 - 327, English
    [Refereed]
    Scientific journal

  • Makoto Mashida, Akira Sou
    Society of Automotive Engineers of Japan, 2018, International Journal of Automotive Engineering, 9(1) (1), 9 - 15, English
    [Refereed]
    Scientific journal

  • Hybrid Numerical Simulation of Turbulent Cavitation Flow in a Nozzle and Liquid Jet
    山本将貴, 鷲見謙彰, 宋明良, 和田好隆, 植木義治, 横畑英明
    [つくば] : 日本液体微粒化学会, Dec. 2017, 微粒化シンポジウム講演論文集, 26, 105 - 108, Japanese

  • Hirai Takayuki, Yamanaka Shingo, Sou Akira, Nihei Yasunori
    The Japan Society of Naval Architects and Ocean Engineers, Nov. 2017, Conference Proceedings The Japan Society of Naval Architects and Ocean Engineers, 25(25) (25), 515 - 518, Japanese

  • Ooe Takeru, Aquino Helvines Corazon, Sou Akira
    The Japan Society of Naval Architects and Ocean Engineers, Nov. 2017, Conference Proceedings The Japan Society of Naval Architects and Ocean Engineers, 25(25) (25), 427 - 430, Japanese

  • X-Ray Imaging and Measurement of Cavitation Flow in Fuel Injector Nozzles with Various Geometries
    Prasetya Rubby, KASAHARA Takumi, KOTANI Kazuya, MIWA Takashi, SOU AKIRA, MOON Seoksu, WADA Yoshitaka, UEKI Yoshiharu, YOKOHATA Hideaki
    Oct. 2017, Proc. of the 19th Annual Conference on Liquid Atomization and Spray Systems, Asia (ILASS-Asia 2017), English
    [Refereed]
    International conference proceedings

  • String Cavitation and 3D PIV in Multi-Hole Injector
    NAKANO Hiroaki, Rubby Prasetya, DEGUCHI Shinichiroo, MIWA Takashi, SOU AKIRA, NISHIDA Keiya, NAKASHIMA Akira, WADA Yoshitaka, UEKI Yoshiharu, YOKOHATA Hideaki
    ILASS-Asia, Oct. 2017, Proc. of the 19th Annual Conference on Liquid Atomization and Spray Systems, Asia (ILASS-Asia 2017), English
    [Refereed]
    International conference proceedings

  • Breakup Length of Planar Liquid Sheet with Cocurrent Air Flow
    KAWABATA Ryota, OSHIMA Ippei, NISHIYAMA Shingo, SOU AKIRA, MATSUURA Kazuaki
    ILASS-Asia, Oct. 2017, Proc. of the 19th Annual Conference on Liquid Atomization and Spray Systems, Asia (ILASS-Asia 2017), English
    [Refereed]
    International conference proceedings

  • Numerical Simulation on the Interaction between Microbubble and Shock Wave
    中東駿斗, 宋明良
    2017, 混相流シンポジウム講演論文集(CD-ROM), 2017

  • Occurrence Mechanism of String Cavitation in Fuel Injector
    堀江仁美, PRASETYA Rubby, 三輪誠, 宋明良
    2017, 混相流シンポジウム講演論文集(CD-ROM), 2017

  • スロッシングを伴うタンク内液相気化過程の可視化計測実験
    大江健, AQUINO Helvines Corazon, 宋明良
    2017, 日本船舶海洋工学会講演会論文集(CD-ROM), (25) (25)

  • I. Oshima, A. Sou, R. Kawabata, K. Matsuura
    American Institute of Aeronautics and Astronautics Inc., 2017, AIAA SciTech Forum - 55th AIAA Aerospace Sciences Meeting, 10.2514/6.2017 - 1464 (AIAA 2017-1464), English
    [Refereed]
    International conference proceedings

  • Raditya Hendra Pratama, Akira Sou, Tokihiro Katsui, Shigeru Nishio
    2017, ATOMIZATION AND SPRAYS, 27(3) (3), 189 - 205, English
    [Refereed]
    Scientific journal

  • Shingo Yamanaka, Takayuki Hirai, Yasunori Nihei, Akira Sou
    2017, PROCEEDINGS OF THE ASME 36TH INTERNATIONAL CONFERENCE ON OCEAN, OFFSHORE AND ARCTIC ENGINEERING, 2017, VOL 6, 6, OMAE2017 - 61788, English
    [Refereed]
    International conference proceedings

  • 並行気流による平面液膜の分裂過程—Breakup Process of Planar Liquid Sheet by Concurrent Air Flow
    川畑 諒太, 大島 逸平, 西山 真悟, 宋 明良, 松浦 一哲
    [つくば] : 日本液体微粒化学会, Dec. 2016, 微粒化シンポジウム講演論文集 = The Symposium (ILASS-Japan) on Atomization, 25, 76 - 81, Japanese

  • 気液物性値とノズル形状が並行気流による平面液膜流の微粒化過程に及ぼす影響—Effects of Gas and Liquid Physical Properties and Nozzle Geometries on Breakup Process of a Liquid Sheet by Concurrent Air Flow
    大島 逸平, 川畑 諒太, 西山 真悟, 宋 明良, 松浦 一哲
    [つくば] : 日本液体微粒化学会, Dec. 2016, 微粒化シンポジウム講演論文集 = The Symposium (ILASS-Japan) on Atomization, 25, 14 - 17, Japanese

  • Yamanaka Shingo, Hirai Takayuki, Kimura Satoru, Nihei Yasunori, Sou Akira
    The Japan Society of Naval Architects and Ocean Engineers, Nov. 2016, Conference Proceedings The Japan Society of Naval Architects and Ocean Engineers, 23(23) (23), 583 - 586, Japanese

  • X-Ray High-Speed Visualization of Cavitation in Fuel Injector and Discharged Liquid Jet
    SOU AKIRA, MIWA Takashi, Rubby Prasetya, KASAHARA Takumi, MOON Seoksu, WADA Yoshitaka, YOKOHATA Hideaki
    Nov. 2016, Proc. 18th Annual Conference of Liquid Atomization and Spray Systems - Asia (ILASS-Asia 2016), Paper 137, English
    [Refereed]
    International conference proceedings

  • Effect of Ambient Pressure on Cavitation in Fuel Injector Nozzle and Liquid Jet
    Rubby Prasetya, Kasahara Takumi, SOU AKIRA, Moon Seoksu, Wada Yoshitaka, Yokohata Hideaki
    Sep. 2016, Proceedings of 27th Annual Conference on Liquid Atomization and Spray Systems - Europe (ILASS-Europe 2016), C - 02, English
    [Refereed]
    International conference proceedings

  • Sloshing of LNG and Liquid Hydrogen in Rectangular Tank
    Helvines Corazon Aquino, SOU AKIRA
    Jun. 2016, Proc Twenty-sixth International Ocean and Polar Engineering Conference (ISOPE 2016), 2016-January, 2016 - TPC-0606, English
    [Refereed]
    International conference proceedings

  • Synchrotron X-Ray Phase Contrast Imaging of Cavitation in Fuel Injector Nozzles with Various Sizes
    SOU AKIRA, Rubby Prasetya, Moon Seoksu, Wada Yoshitaka, Yokohata Hideaki
    May 2016, Proc of 9th International Conference on Multiphase Flow (ICMF 2016), Affari - 3,C-Mo3., English
    [Refereed]
    International conference proceedings

  • Numerical Simulation of LNG and LH2 Sloshing
    Helvines Corazon Aquino, SOU AKIRA
    Mar. 2016, Proceedings of 3rd International Conference on Violent Flows (VF-2016), English
    International conference proceedings

  • Baris Bicer, SOU AKIRA
    Mar. 2016, Applied Mathematical Modelling, 40(7-8) (7-8), 4712 - 4726, English
    [Refereed]
    Scientific journal

  • 水中気泡と衝撃波の相互作用に関する数値計算
    古畑龍生, 谷口直, 宋明良, 阿部晃久
    2016, 衝撃波シンポジウム講演論文集(CD-ROM), 2015

  • 非定常噴射過程における燃料インジェクタ内キャビテーションと液体噴流
    笠原巧, RUBBY Prasetya, 宋明良, 和田好隆, 横畑英明
    2016, 混相流シンポジウム講演論文集(CD-ROM), 2016

  • 矩形ノズル内キャビテーションの四次元構造
    谷口拓斗, 宋明良, 和田好隆, 横畑英明
    2016, 混相流シンポジウム講演論文集(CD-ROM), 2016

  • 多噴孔ノズルのキャビテーションとステレオPIV
    中野裕晃, HENDRA Pratama Raditya, RUBBY Prasetya, 三輪誠, 松原佳之, 宋明良
    2016, 内燃機関シンポジウム講演論文集(CD-ROM), 27th

  • 並行気流による平面液膜の分裂過程
    川畑諒太, 大島逸平, 西山真悟, 宋明良, 松浦一哲
    2016, 微粒化シンポジウム講演論文集, 25th

  • 気液物性値とノズル形状が並行気流による平面液膜流の微粒化過程に及ぼす影響
    大島逸平, 川畑諒太, 西山真悟, 宋明良, 松浦一哲
    2016, 微粒化シンポジウム講演論文集, 25th

  • コラムを有する円柱状海洋構造物と波の相互作用
    山中伸悟, 平井崇起, 木村暁, 二瓶泰範, 宋明良
    2016, 日本船舶海洋工学会講演会論文集(CD-ROM), (23) (23)

  • Akira Sou, Raditya Hendra Pratama
    2016, ATOMIZATION AND SPRAYS, 26(9) (9), 939 - 959, English
    [Refereed]
    Scientific journal

  • Analysis of cavitation flow in mini-sac fuel injector and discharged liquid jet
    Raditya Hendra Pratama, SOU Akira, NISHIO Shigeru, Wada Yoshitaka, Yokohata Hideaki
    Sep. 2015, Proc 11th International Symposium on Particle Image Velocimetry – PIV15, English
    [Refereed]
    International conference proceedings

  • Shora Shibata, Shigeru Nishio, Akira Sou, Daisuke Akayama, Makoto Mashida
    Aug. 2015, JOURNAL OF VISUALIZATION, 18(3) (3), 481 - 492, English
    [Refereed]
    Scientific journal

  • X-Ray Visualization of Cavitation in Nozzles with Various Sizes
    SOU AKIRA, Minami Shinichiro, Rubby Prasetya, Raditya Hendra Pratama, Moon Seoksu, Wada Yoshitaka, Yokohata Hideaki
    Aug. 2015, Proc 13th Triennial International Conference on Liquid Atomization and Spray Systems, English
    [Refereed]
    International conference proceedings

  • Turbulence and Bubble Dynamics Models to Simulate Transient Cavitation Flow in Fuel Injector Nozzle
    Baris Bicer, SOU AKIRA
    Aug. 2015, Proc 13th Triennial International Conference on Liquid Atomization and Spray Systems, English
    [Refereed]
    International conference proceedings

  • Numerical and Experimental Study on Liquid Sheet Deformation by Air Flow
    Oshima Ippei, SOU AKIRA, Matsuura Kazuaki
    Aug. 2015, Proc 13th Triennial International Conference on Liquid Atomization and Spray Systems, English
    [Refereed]
    International conference proceedings

  • Effect of Nozzle Inlet Roundness and Nozzle Length on Cavitation and Liquid Jet
    Rubby Prasetya, Mashida Makoto, Yamada Yukihisa, SOU AKIRA
    Aug. 2015, Proc 13th Triennial International Conference on Liquid Atomization and Spray Systems, English
    [Refereed]
    International conference proceedings

  • Cavitation in Mini-Sac Nozzle and Injected Liquid Jet
    Raditya Hendra Pratama, SOU AKIRA, Wada Yoshitaka, Yokohata Hideaki
    Aug. 2015, Proc 13th Triennial International Conference on Liquid Atomization and Spray Systems, English
    [Refereed]
    International conference proceedings

  • ノズル寸法がキャビテーションに及ぼす影響とX線による可視化
    南慎一郎, PRATAMA Raditya Hendra, PRASETYA Rubby, 宋明良, 三輪誠, MOON Seoksu
    2015, 微粒化シンポジウム講演論文集, 24th

  • 水噴霧による過熱蒸気温度制御に関する研究
    平川翔, 宋明良
    2015, マリンエンジニアリング学術講演会講演論文集, 85th

  • Analysis of the relation between cavitation flow in mini-sac fuel injector and progress of liquid jet atomization
    西尾茂, 西村奈央子, PRATAMA Raditya Hendra, 宋明良, 和田好隆, 横畑英明
    2015, 可視化情報学会誌, 35(Suppl.2) (Suppl.2)

  • Baris Bicer, Akira Sou
    2015, ATOMIZATION AND SPRAYS, 25(12) (12), 1063 - 1080, English
    [Refereed]
    Scientific journal

  • Numerical Simulation of Urea SCR for Marine Diesel Engines
    Masayoshi Hayashi, Sho Hirakawa, Akira Sou
    Nov. 2014, Proceedings of 3rd International Symposium on Maritime Sciences, 145 - 148, English
    International conference proceedings

  • Numerical Simulation of Turbulent Cavitating Flow in Diesel Fuel Injector
    Baris Bicer, Akira Sou
    Nov. 2014, Proceedings of 3rd International Symposium on Maritime Sciences, 33 - 38, English
    International conference proceedings

  • Numerical Simulation of Sloshing by using PLIC-volume Tracking Method
    Helvines Corazon Aquino, Akira Sou
    Nov. 2014, Proceedings of 3rd International Symposium on Maritime Sciences, 113 - 118, English
    International conference proceedings

  • Numerical Simulation of Shock Wave Bubble Interaction for Ballast Water Treatment
    Nao Taniguchi, Ryuki Furuhata, Akira Sou, Akihisa Abe
    Nov. 2014, Proceedings of 3rd International Symposium on Maritime Sciences, 197 - 201, English
    International conference proceedings

  • Akira Sou, Baris Bicer, Akio Tomiyama
    Nov. 2014, COMPUTERS & FLUIDS, 103, 42 - 48, English
    [Refereed]
    Scientific journal

  • Numerical Simulation of Fuel Film Deformation in Gas Turbine Engine
    Ippei Oshima, Akira Sou
    Nov. 2014, Proceedings of 3rd International Symposium on Maritime Sciences, 101 - 106, English
    International conference proceedings

  • Cavitation in Mini-Sac Fuel Injector for Diesel Engines
    Raditya Hendra Pratama, Tokuhide Egawa, Satoshi Nakatsu, Shinichiro Minami, Shora Shibata, Naoko Nishimura, SOU AKIRA, Shigeru Nishio
    Nov. 2014, Proceedings of 3rd International Symposium on Maritime Sciences, 21 - 26, English
    International conference proceedings

  • CFD-Based Optimization of Urea SCR for Marine Diesel
    Masayoshi Hayashi, SOU AKIRA
    Sep. 2014, Proc. 10th International Symposium on Maritime Engineering, English
    International conference proceedings

  • Cavitation in Mini-Sac Nozzle and Injected Liquid Jet
    SOU AKIRA, Raditya Hendra Pratama, Yoshitaka Wada, Hideaki Yokohata
    Sep. 2014, Proc. Thermo-and Fluid Dynamic Processes in Direct Injection Engine, English
    [Refereed]
    International conference proceedings

  • Models for Prediction of Cavitation in Diesel Injector Nozzles
    BARIS BICER, SOU AKIRA
    Jun. 2014, 9th OpenFOAM Workshop, English
    International conference proceedings

  • Evaluation of Cavitation in Injector Nozzle and Correlation with Liquid Atomization
    SHIBATA Shora, NISHIO Shigeru, SOU Akira, AKAYAMA Daisuke, MASHIDA Makoto
    Jun. 2014, Proceedings of the 16th International Symposium on Flow Visualization, Paper, (1196) (1196), 1 - 14, English
    [Refereed]
    International conference proceedings

  • 入口R付ノズル内キャビテーションと液体噴流
    山田幸聖, 増田誠, 宇澤あいか, 宋明良
    2014, 混相流シンポジウム講演論文集(CD-ROM), 2014

  • 燃料インジェクタ内キャビテーションのハイブリッド解析モデル
    西風太, 田中彩娜, 宋明良, 和田好隆, 横畑英明
    2014, 混相流シンポジウム講演論文集(CD-ROM), 2014

  • VOF法に基づく圧縮性気液二相流の数値解析
    谷口直, 宋明良, 阿部晃久
    2014, 混相流シンポジウム講演論文集(CD-ROM), 2014

  • 燃料インジェクタ内キャビテーションの三次元構造
    田中彩娜, 西風太, 宋明良, 和田好隆, 横畑英明
    2014, 混相流シンポジウム講演論文集(CD-ROM), 2014

  • ミニサック型インジェクタ内流動のPIV解析とキャビテーション及び液体噴流
    中津敏, 頴川徳秀, RADITYA Hendra Pratama, 宋明良, 和田好隆, 横畑英明
    2014, 混相流シンポジウム講演論文集(CD-ROM), 2014

  • Bans Bice, Akira Sou
    2014, ATOMIZATION AND SPRAYS, 24(10) (10), 915 - 935, English
    [Refereed]
    Scientific journal

  • String Cavitation in Fuel Injector
    Raditya Hendra Pratama, SOU AKIRA
    ILASS-Asia, Dec. 2013, 16th Annual Conference of ILASS-Asia, English
    International conference proceedings

  • Effects of Inlet Edge Roundness on Cavitation in Injector Nozzles and Liquid Jet
    MASHIDA Makoto, UZAWA Aika, KIBAYASHI Yusuke, SOU AKIRA
    ILASS-Asia, Dec. 2013, 16th Annual Conference of ILASS-Asia, English
    International conference proceedings

  • Daisuke Akayama, Shigeru Nishio, Akira Sou
    Begell House Inc., Aug. 2013, Journal of Flow Visualization and Image Processing, 20(1-2) (1-2), 47 - 64, English
    [Refereed]
    Scientific journal

  • Evaluation of Liquid Jet Flow by Means of Image Analysis
    AKAYAMA Daisuke, NISHIO Shigeru, SOU, Akira
    Aug. 2013, Proceedings of the 9th Pacific Symposium on Flow Visualization and Image Processing, 319 - 324, English
    [Refereed]
    International conference proceedings

  • Cavitation in Diesel Fuel Injector
    SOU AKIRA, Raditya Hendra Pratama, Yusuke Kibayashi
    May 2013, International Conference on Multiphase Flow 2013 (ICMF 2013), English
    International conference proceedings

  • インジェクタの噴孔内キャビテーションと液体噴流に及ぼす噴孔入口曲率の影響
    木林優介, 宇澤あいか, 宋明良, 掛橋展久, 芹澤一史
    2013, 自動車技術会学術講演会前刷集, (66-13) (66-13)

  • 燃料液膜流の変形過程に関する数値シミュレーション
    大島逸平, 宋明良
    2013, 微粒化シンポジウム講演論文集, 22nd

  • 燃料インジェクタ内キャビテーションと液体噴流に及ぼすノズル入口エッジの影響
    宇澤あいか, 木林優介, 宋明良
    2013, 内燃機関シンポジウム講演論文集(CD-ROM), 24th

  • Analysis of Liquid Jet Flow and Atomization Induced by Cavitation in a Nozzle
    赤山大介, 西尾茂, 宋明良, 柴田将良
    2013, 可視化情報学会誌, 33(Suppl.2) (Suppl.2)

  • Youngjin CHOI, Keiko TAKAHASHI, Akihisa ABE, Shigeru NISHIO, Akira SOU
    The Deepwater Horizon accident discharged a staggering amount of oil (about 780,000 kL) into the Gulf of Mexico. In other forecast simulations based on the ocean-only models, spilled oil reached the Atlantic Ocean via the Gulf Stream. In this study, the authors simulated 3-dimensional movement of oils using real-time oceanic and atmospheric conditions obtained by the coupled MSSG (Multi-Scale Simulator for the Geoenvironment) model. Our simulation shows that the amount of oil discharge into the Atlantic is very limited due to the trade winds. The atmospheric coupling to the ocean model is essential in the forecast simulation of spilled oils.
    The Japan Institute of Marine Engineering, Jan. 2013, Journal of The Japan Institute of Marine Engineering, Vol.48, No.1, pp.105-109(1) (1), 105 - 109, English
    [Refereed]
    Scientific journal

  • String Cavitation in an Injector
    SOU Akira, PRATAMA Raditya Hendra, KIBAYASHI Yusuke
    ILASS Europe, Dec. 2012, 25th European Conference on Liquid Atomization and Spray Systems, 21, 165 - 169, Japanese

  • Numerical Simulation of Microbubble-Shock Wave Interaction in Ballast Water
    KITAGAWA Hideaki, SOU AKIRA
    Nov. 2012, 2nd East Asia International Student Symposium on Maritime Sciences (EAISS2012), English
    International conference proceedings

  • Numerical Model of Cavitation in Fuel Injector
    KINUGAWA Yusuke, SOU AKIRA, FUKUDA Takumi
    Nov. 2012, 2nd East Asia International Student Symposium on Maritime Sciences (EAISS2012), English
    International conference proceedings

  • Effects of Asymmetric Inflow on Internal Flow in Diesel Injector Nozzle
    TOMISAKA Tsuyoshi, KIBAYASHI Yusuke, SOU AKIRA
    Nov. 2012, 2nd East Asia International Student Symposium on Maritime Sciences (EAISS2012), English
    International conference proceedings

  • Cavitation in a Cylindrical Nozzle of Fuel Injector
    Raditya Hendra Pratama, KIBAYASHI Yusuke, SOU AKIRA
    Nov. 2012, 2nd East Asia International Student Symposium on Maritime Sciences (EAISS2012), English
    International conference proceedings

  • Toward the Next Generation Fuel Injection Technology for Super Clean Diesel Engine (Keynote Lecture)
    SOU Akira
    Oct. 2012, Proceedings of 2012 International Marine Culcure Conference, English
    [Invited]
    International conference proceedings

  • Cavitation in Fuel Injector for Diesel Engines
    SOU Akira, Raditya Hendra Pratama
    Sep. 2012, Proceedings of the 6th Japanese-European Two-Phase Flow Group Meeting, English
    [Invited]
    International conference proceedings

  • Cavitation Flow in Nozzle of Liquid Injector
    SOU Akira, Raditya Hendra Pratama, TOMISAKA Tsuyoshi
    Sep. 2012, Proceedings of 12th Triennial International Conference on Liquid Atomization and Spray Systems (ICLASS 2012), No. 276
    [Refereed]
    International conference proceedings

  • Cavitation in a Nozzle of Fuel Injector
    SOU Akira, Raditya Hendra Pratama, TOMISAKA Tsuyoshi
    Aug. 2012, Proceedings of the 8th International Symposium on Cavitation, doi:10.3850/978-981-07-2826-7_
    International conference proceedings

  • Accumulation and Removal of Particulate Matter on SCR Catalyst of Marine Diesel Engine
    SOU Akira
    Jun. 2012, Proceedings of Japan-U.S. Seminar on Two-Phase flow Dynamics 2012, No. T16, pp. 1-7, English
    [Invited]
    International conference proceedings

  • 流体物性が燃料インジェクタ内キャビテーションと液体噴流に及ぼす影響
    木林優介, PRATAMA Raditya Hendra, 宋明良
    2012, マリンエンジニアリング学術講演会講演論文集, 82nd

  • 尿素SCR触媒への粒子状物質堆積とその除去
    宋明良, 濱岡俊次, 福井義典, 神田俊久, 高畑泰幸
    2012, マリンエンジニアリング学術講演会講演論文集, 82nd

  • Cavitation in Fuel Injector Nozzles and Liquid Jet
    SUGIMURA Ryohei, PRATAMA Raditya Hendra, OHASHI Ryota, TOMISAKA Tsuyoshi, SOU Akira
    Dec. 2011, Proceedings of East Asia International Student Symposium 2010, 20, 147 - 151, Japanese

  • Numerical Simulation of Interaction between Bubbles and Shock Waves in Ballast Water
    SOU Akira, NAKADA Masahiro, ABE Akihisa, NISHIO Shigeru
    日本船舶海洋工学会, Nov. 2011, Proceedings of Techno-Ocean 2010, 14-2-012(13) (13), 311 - 314, Japanese

  • Particulate Matter Deposition on Urea SCR Catalyst for Marine Diesel Engines
    AWATA Kazuki, SOU Akira
    Nov. 2011, Proc. 9th International Symposium on Marine Engineering, ISME2011-A5-2, English
    [Refereed]
    International conference proceedings

  • Choi Young Jin, Takahasi Keiko, ABE AKIHISA, NISHIO SHIGERU, SOU AKIRA
    The Deepwater Horizon accident discharged a staggering amount of oil (about 780,000 Kl) into the Gulf of Mexico. In other forecast simulations based on the ocean-only models, spilled oil reach the Atlantic Ocean by the Gulf Stream. In this study, we simulated 3-dimensional movement of oils using the real-time oceanic and atmospheric conditions obtained by the coupled MSSG (Multi-Scale Simulator for the Geoenvironment) model. Our simulation show that the amounts of oil discharge into the Atlantic is very limited due to the trade winds. The atmospheric coupling to the ocean model is essential in the forecast simulation of spilled oils.
    Research Institute for Applied Mechanics, Kyushu University, Oct. 2011, Proceedings of ISME KOBE 2011, C2-1, 23 - 27, English
    [Refereed]
    International conference proceedings

  • Interface Tracking Simulation of Shock-Bubble Interaction in Ballast Water
    NAKADA Masahiro, SOU Akira, ABE Akihisa, NISHIO Shigeru
    Oct. 2011, Proc. 9th International Symposium on Marine Engineering, ISME2011-C1-5, English
    [Refereed]
    International conference proceedings

  • Effects of Asymmetric Inflow on Cavitation in Diesel Injector Nozzle
    OHASHI Ryota, SOU Akira, SUGIMURA Ryohei, TOMISAKA Tsuyoshi
    Oct. 2011, Proc. 9th International Symposium on Marine Engineering, ISME2011-A4-1, English
    [Refereed]
    International conference proceedings

  • Development and performance evaluation of periodic underwater shock wave generator for shock sterilization of ballast water
    ABE AKIHISA, Miychi Akihiro, Fukuda Shinya, SOU AKIRA, NISHIO SHIGERU
    Oct. 2011, Proceedings of ISME KOBE 2011, C1-3
    [Refereed]
    International conference proceedings

  • Cavitation in Fuel Injector Nozzle (Invited Lecture)
    SOU Akira
    Lead, Oct. 2011, Proc. the 15th Annual Conference on Liquid Atomization and Spray Systems - Asis, English
    [Invited]
    International conference proceedings

  • Bubble Dynamics Models For Predicting Cavitation In Diesel Fuel Injector
    KINUGASA Tomoyuki, SOU Akira, KINUGAWA Yusuke
    Oct. 2011, Proc. 9th International Symposium on Marine Engineering, ISME2011-A4-2, English
    [Refereed]
    International conference proceedings

  • Incorporation of Malfunctions in Equipment in Marine Engine Plant Simulator
    Tomohisa Dan, Makoto Uchida, Hiromasa Ikawa, Yasunaga Maeda, Akira Sou
    In the present study, it is aimed to incorporate malfunctions of marine plant system with the Marine Engine Plant Simulator (MEPS). The data of practical malfunctions of ship equipment, 3,399 incidents with 1,395 ships, were gathered in corporation with an organization of marine engine operations. Those data were analyzed in aspect of the founding method of errors. From the dat
    IMLA ICERS Committee, Sep. 2011, The 10th International Conference on Engine Room Simulators (ICERS 10 St.Petersburg), (No.11) (No.11), 1 - 8, English
    [Refereed]
    International conference proceedings

  • ディーゼル機関の燃料インジェクタにおける気泡力学モデル
    衣笠智行, 絹川悠介, 宋明良
    2011, マリンエンジニアリング学術講演会講演論文集, 81st

  • 燃料インジェクタ内キャビテーションと液体噴流
    富阪豪, 大橋亮太, 杉村良平, 宋明良
    2011, 日本混相流学会年会講演会講演論文集, 2011

  • バラスト水処理のための水中衝撃波生成法に関する基礎研究
    菅原和也, 宮地晃弘, 阿部晃久, 宋明良, 西尾茂
    2011, 日本船舶海洋工学会講演会論文集(CD-ROM), (13) (13)

  • インジェクタ内キャビテーション挙動と液体噴流
    宋明良
    2011, 自動車技術会講演会前刷集, 22 - 11

  • インジェクタ内キャビテーション挙動と液体噴流
    宋明良
    2011, 自動車技術会学術講演会前刷集, 2011, (22-11) (22-11), 19 - 22

  • Cavitation in a Nozzle with Asymmetric Inflow and a Liquid Jet
    SOU Akira, OHASHI Ryota, SUGIMURA Ryohei, HIROSIMA Saburo, TAKANO Satoshi
    Dec. 2010, Proc. 24th European Conference on Liquid Atomization and Spray Systems (ILASS-Europe 2011), 19, 147 - 150, Japanese

  • Oil-Spill Simulation using Nested Global Atmosphere-Ocean Model
    Choi Young Jin, Takahasi Keiko, Abe Akihisa, NISHIO SHIGERU, Sou Akira
    Oct. 2010, Proceedings of Techno-Ocean 2010, Kobe, Japan, 14th Room2(3B), Environment I
    [Refereed]
    International conference proceedings

  • Deposition of Particulate Matter in Diesel Exhaust Gas on SCR Catalyst
    SOU Akira, AWATA Kazuki
    Oct. 2010, Proceedings of Techno-Ocean 2010, 16-1-008, English
    International conference proceedings

  • Cavitation in Tilted Nozzles of Liquid Injectors
    SOU Akira, SUGIMURA Ryohei, OHASHI Ryota, Raditya Hendra Pratama
    Oct. 2010, Proceedings of Techno-Ocean 2010, 16-1-009, English
    International conference proceedings

  • Numerical Simulation of Developing Cavitation Flow in a Nozzle of Pressure Atomizer
    SOU Akira, KINUGASA Tomoyuki
    Sep. 2010, Proceedings of Thermo-and Fluid Dynamic Processes in Diesel Engines (THIESEL 2010), A.2.1, English
    [Refereed]
    International conference proceedings

  • LES-Based Bubble Tracking Simulation of Turbulent Cavitation Flow in Injector Nozzle
    SOU Akira, GOSHIMA Daisuke, KINUGASA Tomoyuki, HAYASHI Kosuke, TOMIYAMA Akio
    May 2010, Proceedings of 7th International Conference on Multiphase Flow, No. 2-1-2, English
    [Refereed]
    International conference proceedings

  • 圧力噴射弁の非対称ノズル内キャビテーション
    宋明良, 大橋亮太, 杉村良平, PRATAMA Raditya Hendra
    2010, マリンエンジニアリング学術講演会講演論文集, 80th

  • 衝撃圧を利用するバラスト水処理技術に関する基礎研究
    阿部晃久, 万碧玉, 三村治夫, 西尾茂, 宋明良
    2010, マリンエンジニアリング学術講演会講演論文集, 80th

  • 大気海洋モデルを用いた油流出の数値計算
    CHOI Young Jin, 阿部晃久, 西尾茂, 宋明良, 高橋桂子
    2010, 日本船舶海洋工学会講演会論文集(CD-ROM), (10) (10)

  • Akira Sou
    2010, SAE International Journal of Engines, 2(2) (2), 694 - 702, English
    [Refereed]
    Scientific journal

  • CAVITATION IN NOZZLES OF PLAIN ORIFICE ATOMIZERS WITH VARIOUS LENGTH-TO-DIAMETER RATIOS
    Akira Sou, Shigeo Hosokawa, Akio Tomiyama
    2010, ATOMIZATION AND SPRAYS, 20(6) (6), 513 - 524, English
    [Refereed]
    Scientific journal

  • Abe Akihisa, Wan Biyu, Mimura Haruo, Nishio Shigeru, Sou Akira, Tsujii Nobuhito, Fukuda Shinya
    The Japan Society of Naval Architects and Ocean Engineers, Nov. 2009, Conference Proceedings The Japan Society of Naval Architects and Ocean Engineers, 9K(10) (10), 35 - 36, Japanese

  • Application of the Earth Simulator II for Conservation of Ocean Environment
    Young Jin CHOI, ABE AKIHISA, NISHIO SHIGERU, SOU AKIRA, TAKAHASHI KEIKO
    Oct. 2009, International Symposium on Marine Engineering (ISME) 2009, CT-2, No.124, English
    [Refereed]
    International conference proceedings

  • Application of Shock Pressures Generated by Collapsing Microbubbles to Inactivation Treatment of Marine Bacteria in Ship Ballast Water
    Abe Akihisa, Ohtani Kiyonobu, Takayama Kazuyoshi, Mimura Haruo, Nishio Shigeru, Sou Akira, Biyu Wan
    Oct. 2009, International Symposium on Marine Engineering (ISME) 2009, DT-1, No.16, English
    [Refereed]
    Scientific journal

  • Liquid Jet Deformation Induced by Cavitation in Nozzles of Various Shapes
    SOU Akira
    Sep. 2009, Proc 9th International Conference on Engines and Vihicles (ICE 2009), SAE2009 - 24-0157, English
    [Refereed]
    International conference proceedings

  • Dimensionless Numbers on Cavitation in a Nozzle of a Plain Orifice Atomizer
    SOU Akira, HOSOKAWA Shigeo, TOMIYAMA Akio
    Jul. 2009, Proceedings of 11th International Conference on Liquid Atomization and Spray Systems (ICLASS 2009), ICLASS2009-019, pp. 1-7, English
    [Refereed]
    International conference proceedings

  • 圧力噴射弁のノズル内キャビテーション流れ
    五島代介, 宋明良, 細川茂雄, 冨山明男
    2009, 日本混相流学会年会講演会講演論文集, 2009

  • HASHIMOTO Hideki, SOU Akira, TOMIYAMA Akio, FURUKAWA Junichi, WILLIAMS Forman A.
    3-D movement of flame fronts in lean and rich hydrocarbon-air turbulent premixed Bunsen flames, having the identical laminar burning velocities, were examined by a four-element electrostatic probe. Measurements were conducted at an off-axis position in turbulent flame brush. The probability distributions of the magnitude and of the direction cosines of the velocity vector of the flamelet were examined. The results showed differences between the lean and rich propane flames but not between the lean and rich methane-flame pairs. The lean propane flame has the same probability distribution of direction cosines as the methane flames. The probability distributions of the direction cosines for the rich propane flame are, however, quite different, that there is a much greater tendency for outward flamelet motion. Although these results for rich propane flame exhibit a larger most probable outward-motion direction cosine for burnt-to-unburnt passage than for unburnt-to-burnt passage, as has been found in all Bunsen-flame data and explained previously, this is the first example in Bunsen-flame data in which the most probable value of the direction cosine in the radial direction for unburnt to burnt passage is positive, that is, contrary to the other Bunsen-flame results, the average flamelet velocity direction is outward at this off axis position even for unburnt-to-burnt passage. The exceptional characteristics of rich propane were explained by nonlinear enhancement of the average flamelet burning velocity through preferential oxygen diffusion to turbulence-induced flamelet bulges convex towards the fresh mixture.
    The Japan Society of Mechanical Engineers, Aug. 2008, Transactions of the Japan Society of Mechanical Engineers B, 74(744) (744), 1835 - 1842, Japanese

  • SOU Akira, Muhammad Ilham Maulana, HOSOKAWA Shigeo, TOMIYAMA Akio
    Cavitation in a cylindrical nozzle and liquid jets discharged from the nozzle are simultaneously visualized using a high-speed camera to investigate the mechanism of liquid jet atomization induced by the fully-developed cavitation. Three mirrors are used to capture the front view of liquid jet interfaces and the side view of cavitation clouds within a frame of the camera. The high-speed visualization confirms that the collapse of a cavitation cloud near the nozzle exit induces a ligament formation not only for 2D nozzles but also for cylindrical nozzles. The visualization also finds that the collapse of a large cavitation cloud tends to cause the formation of a large ligament, while that of a small cloud results in a small ligament.
    The Japan Society of Mechanical Engineers, Aug. 2008, Journal of Fluid Science and Technology, Vol. 3, No. 5, pp. 633-644(5) (5), 633 - 644, English
    [Refereed]
    Scientific journal
    Link to Kobe Univ. Repository (Kernel)

  • SOU Akira, Muhammad Ilham Maulana, ISOZAKI Kenji, HOSOKAWA Shigeo, TOMIYAMA Akio
    The effects of nozzle geometry on cavitation in the nozzle of pressure atomizers and the liquid jet are examined using various two-dimensional (2D) nozzles with different geometries. Then, whether or not the conventional cavitation numbers can be used to predict the formation of supercavitation, in which liquid jet atomization is enhanced, is examined. As a result, we confirm that (1) the thickness of the cavitation zone increases with the ratio Cu of the cross-sectional area upstream of the nozzle to that of the nozzle, (2) the spray angle increases with Cu, (3) the formation of supercavitation can be predicted using the cavitation number σc' in which the effects of the flow contraction and the frictional pressure drop are taken into account, and (4) the conventional cavitation numbers σ, σ2 and σ3 cannot predict the formation of supercavitation in nozzles with different geometries.
    The Japan Society of Mechanical Engineers, Aug. 2008, Journal of Fluid Science and Technology, Vol. 3, No. 5, pp. 622-632(5) (5), 622 - 632, English
    [Refereed]
    Scientific journal
    Link to Kobe Univ. Repository (Kernel)

  • Single Drops Rising Through Stagnant Liquids in a Vertical Pipe
    HAYASHI Kosuke, YOSHIKAWA Yasuki, SOU Akira, TOMIYAMA Akio
    Jul. 2008, Proc. 5th International Conference on Transport Phenomena in Multiphase Systems, CD-ROM, English
    [Refereed]
    International conference proceedings

  • Cavitation in a Nozzle of an Atomizer and Its Effects on Liquid Jet
    SOU Akira, Muhammad Ilham Ma, HOSOKAWA Shigeo, TOMIYAMA Akio
    Jul. 2008, Proc. 5th International Conference on Transport Phenomena in Multiphase Systems, CD-ROM, English
    [Refereed]
    International conference proceedings

  • MAEKAWA Munenori, SOU Akira, HOSOKAWA Shigeo, TOMIYAMA Akio
    Effects of inlet bubble diameter on void and bubble size distributions in poly-dispersed bubbly flow in a rectangular bubble column under high gas volumetric flux conditions are experimentally investigated. Three types of gas distributors are used to form bubbly flows with different inlet bubble diameters at a constant gas flow rate. The conclusions obtained are as follows : (1) the bubble size distribution reaches an equilibrium state at which the birth rate of bubbles belonging to a bubble group due to bubble breakup and coalescence is equal to the death rate at high gas volumetric flux, (2) distributions of void fraction and bubble diameter are not affected by inlet bubble diameters except for the region close to the air diffuser, and (3) the elevation at which the bubble size distribution reaches the equilibrium state becomes lower as the gas volumetric flux increases.
    The Japan Society of Mechanical Engineers, Jun. 2008, Transactions of the Japan Society of Mechanical Engineers B, 74(742) (742), 1368 - 1375, Japanese
    Scientific journal
    Link to Kobe Univ. Repository (Kernel)

  • KATAOKA Hironobu, TOMIYAMA Akio, HOSOKAWA Shigeo, SOU Akira, CHAKI Masao
    Air-water two-phase swirling flows in a downscaled model of a steam separator for a boiling water nuclear reactor have been measured while paying attention to the effects of pick-off-ring (POR) shape on separation performance. As a result, the following conclusions are obtained. (1) In an annular swirling flow, the ratio Ws* of the separated liquid flow rate to the total liquid flow rate increases with JG and does not depend on JL and POR shape so much. (2) Separation performance becomes lower and does not depend on POR shape so much when the liquid film thickness becomes larger than the size of the gap between the barrel wall and the POR wall. The gap size should be determined so as to be smaller than the maximum film thickness. (3) The POR shape strongly affects the separation performance when the liquid film thickness is smaller than the gap size.
    THE JAPANESE SOCIETY FOR MULTIPHASE FLOW, Jun. 2008, Progress in Multiphase Flow Research, Vol. 3, pp. 67-74(2008) (2008), 67 - 74, Japanese
    Link to Kobe Univ. Repository (Kernel)

  • KATAOKA Hironobu, TOMIYAMA Akio, HOSOKAWA Shigeo, SOU Akira, CHAKI Masao
    Air-water swirling flows in a one-fifth model of a steam separator in a boiling water nuclear reactor are measured to obtain a database for modeling and verification of numerical methods for predicting swirling flows in the separator. Flow patterns, liquid film thicknesses, separated flow rates and the ratio Ws* of the separated flow to the total liquid flow are measured using a high-speed camera, a laser focus displacement meter and flowmeters. Main conclusions obtained are as follows: (1) liquid transfer from droplets to liquid film is caused not only by droplet deposition but also by the collection of droplets on the vanes of the swirler, (2) Ws* increases with the gas volume flux JG and does not depend on the liquid volume flux JL so much because a large centrifugal force caused by the swirler makes most of droplets in the gas core deposit on the liquid film before the separation and (3) a local peak appears in the axial distribution of film thickness, the position of which corresponds to the location where the droplet deposition caused by the centrifugal force has completed.
    The Japan Society of Mechanical Engineers, Apr. 2008, Journal of Power and Energy Systems, Vol. 2, No. 4, pp. 1120-1131(4) (4), 1120 - 1131, English
    [Refereed]
    Scientific journal
    Link to Kobe Univ. Repository (Kernel)

  • 気泡合体を伴う気泡流の数値計算
    KANG Hyungha, 宋明良, 冨山明男
    2008, 日本混相流学会年会講演会講演論文集, 2008

  • 部分長燃料棒を有するロッドバンドル内気液二相流
    水谷義隆, 細川茂雄, 宋明良, 冨山明男
    2008, 日本混相流学会年会講演会講演論文集, 2008

  • ノズル内キャビテーションと液体噴流に及ぼすノズル長さの影響
    礒崎健二, 宋明良, 細川茂雄, 冨山明男
    2008, 微粒化シンポジウム講演論文集, 17th

  • SWIRLING ANNULAR FLOW IN A STEAM SEPARATOR
    Hironobu Kataoka, Akira Sou, Shigeo Hosokawa, Akio Tomiyama
    2008, ICONE16: PROCEEDING OF THE 16TH INTERNATIONAL CONFERENCE ON NUCLEAR ENGINEERING - 2008, VOL 3, CD-ROM, ICONE16-48077, 67 - 74, English
    [Refereed]
    International conference proceedings

  • HAYASHI Kosuke, SOU Akira, TOMIYAMA Akio
    The number of computational cells assigned to a small bubble is liable to be small in a volume tracking simulation of a poly-dispersed bubbly flow. The volume tracking method is, therefore, expected to at least give qualitatively reasonable predictions of bubble motion without assigning many cells. In this study, bubble motions in stagnant water and shear flows are simulated with low spatial resolutions using a volume tracking method proposed in our previous study. As a result, we confirm that (1) the method can yield correct characteristics of rising velocity and lateral motion of bubbles, and (2) the bubble volume and interface sharpness are kept well even after a bubble had experienced a large deformation in a strong shear flow.
    The Japan Society of Mechanical Engineers, Dec. 2007, Journal of Fluid Science and Technology, Vol. 2, No. 2, pp. 490-501(2) (2), 490 - 501, English
    [Refereed]
    Scientific journal
    Link to Kobe Univ. Repository (Kernel)

  • MAEKAWA Munenori, SHIMADA Naoki, SOU Akira, TOMIYAMA Akio
    Numerical methods for predicting poly-dispersed bubbly flows in bubble columns are indispensable in the design of bubble column reactors. The objectives of the present study are (1) to experimentally investigate the effects of a bubble size distribution on poly-dispersed bubbly flows in an open vessel and (2) to examine the applicability of an (N+2)-field model (NP2) to poly-dispersed bubbly flows. Distributions of void fraction and liquid velocity in air-water bubble plumes in the vessel are measured using an experimental setup with a bubble injection device by which the ratio of the volume flow rate of large bubbles to that of small bubbles is controlled to a desired value. The main conclusions obtained are as follows: (1) experimental data on the effects of a bubble size distribution on air-water bubble plumes are obtained, and (2) NP2 gives good predictions for poly-dispersed bubble plumes.
    The Japan Society of Mechanical Engineers, Dec. 2007, Journal of Fluid Science and Technology, Vol. 2, No. 2, pp. 502-512(2) (2), 502 - 512, English
    [Refereed]
    Scientific journal
    Link to Kobe Univ. Repository (Kernel)

  • (Inveted Lecture) Mechanism of Atomization Enhancement by Cavitation in a Nozzle
    SOU Akira, HOSOKAWA Shigeo, TOMIYAMA Akio
    Oct. 2007, Proc. of Annual Conference of Institute for Liquid Atomization and Spray Systems -Korea 2007, pp. 9-14, English
    [Invited]
    International conference proceedings

  • Akira Sou, Shigeo Hosokawa, Akio Tomiyama
    Aug. 2007, INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 50(17-18) (17-18), 3575 - 3582, English
    [Refereed]
    Scientific journal
    Link to Kobe Univ. Repository (Kernel)

  • Two-Phase Swirling Flow in a Gas-Liquid Separator
    KATAOKA Hironobu, TOMIYAMA Akio, HOSOKAWA Shigeo, SOU Akira, CHAKI Masao
    Jul. 2007, Proc. 6th International Conference on Multiphase Flow, CD-ROM, Paper No. S6_Wed_C_40, English
    [Refereed]
    International conference proceedings

  • Cavitation in Cylindrical Nozzles and Two-Dimensional Nozzles
    SOU Akira, Muhammad Ilham Maulana, HOSOKAWA Shigeo, TOMIYAMA Akio
    Jul. 2007, Proc. International Conference on Multiphase Flow 2007 (ICMF 2007), CD-ROM, Paper No S4_Mon_C_5, English
    [Refereed]
    International conference proceedings

  • Cavitation in a Nozzle and Its Effects on Liquid Jet Atomization
    SOU Akira, HOSOKAWA Shigeo, TOMIYAMA Akio
    Jul. 2007, Proc. Japan-UK Mini-Seminar on Multiphase Flow 2007, CD-ROM, pp. 1-21., English
    International conference proceedings

  • Yoshitaka Mizutani, Akio Tomiyama, Shigeo Hosokawa, Akira Sou, Yoshiro Kudo, Kaichiro Mishima
    Jun. 2007, JOURNAL OF NUCLEAR SCIENCE AND TECHNOLOGY, 44(6) (6), 894 - 901, English
    [Refereed]
    Scientific journal
    Link to Kobe Univ. Repository (Kernel)

  • Multi-Fluid and Particle-Tracking Methods for Predicting Poly-Dispersed Flows (Keynote Lecture)
    TOMIYAMA Akio, HOSOKAWA Shigeo, SOU Akira
    May 2007, Proc. 45th European Two-Phase Flow Group Meeting, p. 2, English
    [Refereed][Invited]
    International conference proceedings

  • ノズル内キャビテーションと噴流微粒化に及ぼすノズル形状と寸法の影響
    宋明良, MAULANA Muhammad Ilham, 礒崎健二, 細川茂雄, 冨山明男
    2007, 日本混相流学会年会講演会講演論文集, 2007

  • Kataoka Hironobu, Nishiwaki Daisuke, Tomiyama Akio, Hosokawa Shigeo, Sou Akira, Chaki Masao
    気水分離器模擬装置を製作し, 旋回二相流流動特性把握を目的とした各種計測を実施し, 液滴及び液膜の流動特性と, スワラーおよびピックオフリングによる気液分離特性を調べた．
    Atomic Energy Society of Japan, 2007, Proceedings of Annual / Fall Meetings of Atomic Energy Society of Japan, 2007s, 236 - 236, Japanese

  • Numerical simulation of single drops in a vertical pipe using various coordinate systems
    Keishun Hirokawa, Kosuke Hayashi, Akira Sou, Akio Tomiyama, Naoki Takada
    2007, FEDSM 2007: PROCEEDINGS OF THE 5TH JOINT ASME/JSME FLUIDS ENGINEERING SUMMER CONFERENCE, VOL 2, PTS A AND B, CD-ROM, FEDSM2007-37491, 291 - 296, English
    [Refereed]
    International conference proceedings

  • HASHIMOTO Shohei, HOSOKAWA Shigeo, TOMIYAMA Akio
    The Japan Society of Mechanical Engineers, 2007, The Proceedings of Conference of Kansai Branch, 2007(0) (0), _9 - 1_, Japanese

  • MAEKAWA Munenori, SHIMADA Naoki, SOU Akira, TOMIYAMA Akio
    Numerical methods for predicting heterogeneous bubbly flows in bubble columns are indispensable in the design of bubble column reactors. The objectives of the present study are (1) to experimentally investigate the effects of a bubble size distribution on heterogeneous bubbly flows in an open vessel and (2) to examine the applicability of the NP2 model ((N+2)-field model) to heterogeneous bubbly flows. Distributions of void fraction and liquid velocity in air-water bubble plumes in the vessel were measured using an experimental setup with a bubble injection device by which the ratio of the volume flow rate of large bubbles to that of small bubbles was controlled to a desired value. The main conclusions obtained were as follows: (1) experimental data on the effects of bubble size distribution on air-water bubble plume were obtained, and (2) the NP2 model gave good predictions for heterogeneous bubbly plumes.
    The Japan Society of Mechanical Engineers, Nov. 2006, Transactions of the Japan Society of Mechanical Engineers B, 72(723) (723), 2680 - 2686, Japanese
    Link to Kobe Univ. Repository (Kernel)

  • Akira Sou, Akio Tomiyama, Shigeo Hosokawa, Shinji Nigorikawa, Tatsutoshi Maeda
    Nov. 2006, JSME INTERNATIONAL JOURNAL SERIES B-FLUIDS AND THERMAL ENGINEERING, 49(4) (4), 1253 - 1259, English
    [Refereed]
    Scientific journal
    Link to Kobe Univ. Repository (Kernel)

  • HAYASHI Kosuke, SOU Akira, TOMIYAMA Akio
    The number of computational cells assigned to a small bubble is liable to be small in a volume tracking simulation of a poly-dispersed bubbly flow. The volume tracking method is, therefore, expected to at least give qualitatively reasonable predictions of bubble motion without assigning many cells. In this study, bubble motions in stagnant water and shear flows were simulated with low spatial resolutions using a volume tracking method proposed in our previous study. As a result, we confirmed that (1) the method could yield correct characteristics of rising velocity and lateral motion of bubbles, and (2) the bubble volume and interface sharpness were kept well even after a bubble had experienced a large deformation in a strong shear flow.
    The Japan Society of Mechanical Engineers, Oct. 2006, Transactions of the Japan Society of Mechanical Engineers B, 72(722) (722), 2410 - 2417, Japanese
    Link to Kobe Univ. Repository (Kernel)

  • Numerical Simulation of Cavitating Flow in a Nozzle by One-Way Bubble Tracking Method
    Muhammad Ilham Maulana, SOU Akira, TOMIYAMA Akio
    Aug. 2006, Proc. 15th Indonesian Scientific Conference in Japan, CD-ROM, F0105, English
    [Refereed]
    International conference proceedings

  • Effects of Cavitation in a Nozzle on Liquid Jet Atomization
    SOU Akira, Muhammad Ilham Maulana, HOSOKAWA Shigeo, TOMIYAMA Akio
    Aug. 2006, Proc. 10th International Conference on Liquid Atomization and Spray Systems (ICLASS 2006), CD-ROM, ICLASS06-043, pp. 1-7, English
    [Refereed]
    International conference proceedings

  • A Volume Tracking Method Based on Non-Uniform Subcells and Continuum Surface Force Model Using a Local Level Set Function
    HAYASHI Kosuke, SOU Akira, TOMIYAMA Akio
    Jul. 2006, Computational Fluid Dynamics Journal, Vol. 15, Iss. 2, pp. 225-232, 225 - 232, English
    [Refereed]
    Scientific journal

  • SOU Akira, TOMIYAMA Akio, HOSOKAWA Shigeo, NIGORIKAWA Shinji, MAEDA Tatsutoshi
    Cavitation and internal flow in the nozzle of a liquid injector are known to affect the atomization of a discharged liquid jet. In order to obtain the knowledge on the mechanism how cavitating flow in a nozzle enhances the liquid jet atomization, liquid velocity distributions of cavitating flows in a two dimensional transparent nozzle were measured using a Laser Doppler Velocimetry (LDV) system. As a result, the following conclusions were obtained: (1) The inception of cavitation occurs near the outer edge of the separated boundary layer (SBL), where the mean local velocity takes the highest value and the mean pressure is lower than the vapor saturation pressure. (2) When the cavitation number σ≥0.78 (No Cavitation or Developing Cavitation), the reattachment of SBL occurs in the middle of the nozzle. A large velocity fluctuation, which appears in and just downstream of SBL, decreases near the nozzle exit. This may be the reason of the wavy jet. (3) When σ≥0.65 (Super Cavitation), the lateral flow from the core region toward the side walls just upstream of the nozzle exit may be the major cause of the increase in spray angle and a drastic promotion of liquid jet atomization. The strong turbulence just upstream of the exit may also play a role on the formation of ligaments at liquid jet interface.
    The Japan Society of Mechanical Engineers, Feb. 2006, Transactions of the Japan Society of Mechanical Engineers B, 72(714) (714), 521 - 527, Japanese
    Scientific journal
    Link to Kobe Univ. Repository (Kernel)

  • SOU Akira, TOMIYAMA Akio, HOSOKAWA Shigeo, NIGORIKAWA Shinji, MATSUMOTO Yoichiro
    Cavitation and internal flow in the nozzle of a liquid injector are known to affect the atomization of a discharged liquid jet. In the present study cavitation in a two-dimensional (2D) nozzle and the injected water jet were visualized using an ultra high-speed camera. As a result, the following conclusions were obtained: (1) The behavior of cavitation in the 2D nozzle and liquid jet agreed qualitatively with the previous observations of cylindrical nozzles. (2) When the cavitation number σ was 1.18, the inception of small cavitation bubbles was observed near the nozzle inlet apart from the side wall. (3) The number of cavitation bubble clouds increased with decreasing of σ (0.75≥σ<1.18), and the streamwise length of the cavitation region increased toward the middle of the nozzle (developing cavitation). The bubble clouds were clearly observed to recirculate in the separated boundary layer. In the case a wavy jet was observed with no significant effects of cavitation on liquid jet atomization. (4) With a slight decrease of σ from 0.75, the cavitation region suddenly extended to the nozzle exit (super cavitation). The shape of the cavitation region near the inlet became smooth, which imply the formation of a long cavitation bubble near the inlet. At the downstream half of the nozzle, clouds of cavitation appeared and collapsed intermittently within the nozzle. In the case atomization was promoted to form spray with ligaments and droplets.
    The Japan Society of Mechanical Engineers, Feb. 2006, Transactions of the Japan Society of Mechanical Engineers B, 72(714) (714), 513 - 520, Japanese
    Link to Kobe Univ. Repository (Kernel)

  • 気泡塔内非均質気泡流動の数値計算
    木下興治, 前川宗則, 島田直樹, 宋明良, 冨山明男
    2006, 日本混相流学会年会講演会講演論文集, 2006

  • 二次元ノズル内キャビテーションの液体噴流微粒化に及ぼす影響
    前田達利, ILHAM Maulana Muhammad, 宋明良, 細川茂雄, 冨山明男
    2006, 日本混相流学会年会講演会講演論文集, 2006

  • 鉛直管内二酸化炭素-水系気液二相流における気泡溶解過程
    野澤聡, 阿部覚, 細川茂雄, 宋明良, 冨山明男
    2006, 日本混相流学会年会講演会講演論文集, 2006

  • Kataoka Hironobu, Tomiyama Akio, Hosokawa Shigeo, Sou Akira, Cyaki Masao
    超高出力密度炉心の採用により炉心出口部での蒸気クオリティは増加する．これに伴い高クオリティ条件に適合する気水分離器の開発に有用な，気水分離器縮小モデルを用いた基礎実験データが望まれる．本研究では，気水分離器縮小モデル内の空気_-_水系気液旋回二相流を対象として、その気液分離特性、圧力損失などの基礎実験データを取得した．
    Atomic Energy Society of Japan, 2006, Proceedings of Annual / Fall Meetings of Atomic Energy Society of Japan, 2006f, 258 - 258

  • ノズル内キャビテーションと液体噴流微粒化促進機構
    宋 明良
    2006, 第10回オーガナイズド混相流フォーラム講演論文集(招待講演) 10, 12 - 17
    Scientific journal

  • SOU Akira, MAEDA Akiyoshi, HOSOKAWA Shigeo, TOMIYAMA Akio
    To verify the validity of a numerical method to predict multi-phase dispersed flows of which the density varies with fluid temperature and solute concentration, solute concentration and velocity distributions of a salt water flow were measured using an imaging technique. The aspect ratio and rising velocity of a single drop in a density stratified salt water were also measured. Calculated results of these flows agreed well with the measured results.
    The Visualization Society of Japan, 2006, Journal of the Visualization Society of Japan, 26(1) (1), 301 - 302, Japanese

  • Effects of Inlet Bubble Size on Poly-Dispersed Bubbly Flow in a Bubble Column
    TOMIYAMA Akio, SOU Akira, HOSOKAWA Shigeo
    2006, Proc. 44th European Two-Phase Flow Group Meeting, pp.1-8, English
    [Refereed]
    International conference proceedings

  • A. Tomiyama, K. Sakoda, K. Hayashi, A. Sou, N. Shimada, S. Hosokawa
    2006, Multiphase Science and Technology, 18(1) (1), 73 - 110, English
    [Refereed]
    Scientific journal

  • NUMERICAL SIMULATION OF HETEROGENEOUS BUBBLY FLOW IN A BUBBLE COLUMN
    Munenori Maekawa, Naoki Shimada, Koji Kinoshita, Akira Sou, Akio Tomiyama
    2006, PROCEEDINGS OF THE ASME FLUIDS ENGINEERING DIVISION SUMMER CONFERENCE, VOL 2, CD-ROM, FEDSM2006-98178, 55 - 60, English
    [Refereed]
    International conference proceedings

  • A HYBRID METHOD FOR SIMULATING FLOWS INCLUDING FLUID PARTICLES
    Akiyoshi Maeda, Akira Sou, Akio Tomiyama
    2006, PROCEEDINGS OF THE ASME FLUIDS ENGINEERING DIVISION SUMMER CONFERENCE, VOL 2, CD-ROM, FEDSM2006-98156, 43 - 48, English
    [Refereed]
    International conference proceedings

  • SAKODA Kenichi, TOMIYAMA Akio, SOU Akira
    The Japan Society of Mechanical Engineers, Dec. 2005, Transactions of the Japan Society of Mechanical Engineers B, 71(712) (712), 2884 - 2891, Japanese
    Link to Kobe Univ. Repository (Kernel)

  • A Hybrid Method for Predicting Dispersed Gas-Liquid and Liquid-Liquid Multi-Phase Flows
    SAKODA Kenichi, SOU Akira, TOMIYAMA Akio
    Dec. 2005, 日本機械学会論文集(B編), Vol. 71, No. 712, pp. 2884-289, Japanese
    [Refereed]
    Scientific journal
    Link to Kobe Univ. Repository (Kernel)

  • Dissolution of Carbon Dioxide in a CO2-Water Bubbly Upflow in a Vertical Pipe
    TOMIYAMA Akio, SHIMA Toshihide, HOSOKAWA Shigeo, SOU Akira
    Sep. 2005, Proc. Japan-UK Mini-Seminar on Multiphase Flow, pp.1-5, English
    International conference proceedings

  • LDV Measurement of Cavitating Flows in a Two-Dimensional Nozzle
    SOU Akira, TOMIYAMA Akio, HOSOKAWA Shigeo, NIGORIKAWA Shinji, MATSUMOTO Yoichiro
    Jun. 2005, Proc. International Symposium on Heat and Mass Transfer in Spray Systems, CD-ROM, #29, pp. 1-10., English
    International conference proceedings

  • Measurement of Two-Phase Flow Patterns in a Four by Four Rod Bundle
    TOMIYAMA Akio, SOU Akira, HOSOKAWA Shigeo, MITSUHASHI Masao, NODA Kohei, TSUBO Yasushi, MISHIMA Kaichiro, KUDO Yoshiro
    May 2005, Proc. 13th International Conference on Nuclear Engineering, pp.1-8, English
    [Refereed]
    International conference proceedings

  • 気泡塔内非均質気泡流動の数値計算
    前川宗則, 角沢正広, 木下興治, 宋明良, 冨山明男
    2005, 日本混相流学会年会講演会講演論文集, 2005

  • 2次元ノズル内キャビテーション乱流と液体微粒化に及ぼす影響
    宋明良, 濁川慎司, 前田達利, 冨山明男, 細川茂雄
    2005, 日本混相流学会年会講演会講演論文集, 2005

  • 分散性混相流の統合計算手法の開発
    迫田健一, 宋明良, 冨山明男
    2005, 日本混相流学会年会講演会講演論文集, 2005

  • ロッドバンドル内気液二相流の流動様式に関する研究
    水谷義隆, 坪泰司, 三島嘉一郎, 工藤義郎, 宋明良, 細川茂雄, 冨山明男
    2005, 日本混相流学会年会講演会講演論文集, 2005

  • Akira Sou, Akio Tomiyama
    2005, Multiphase Science and Technology, 17(1-2) (1-2), 23 - 41, English
    [Refereed]
    Scientific journal

  • A volume tracking method based on Advanced Subgrid Counting Algorithm
    Kosuke Hayashi, Win Myint, Akira Sou, Akio Tomiyama
    2005, Proceedings of the ASME Fluids Engineering Division Summer Conference, Vol 2, CD-ROM, FEDSM2005-77396, 265 - 270, English
    [Refereed]
    International conference proceedings

  • SAKODA Kenichi, SOU Akira, TOMIYAMA Akio
    A hybrid CMFD (computational multi-fluid dynamics) method is proposed for the prediction of gas-liquid and/or liquid-liquid dispersed two-phase flows including large-scale interface, poly-dispersed bubbles and drops. The method is the hybrid integration of an interface tracking method (ITM), three kinds of particle tracking methods (PTM) and an averaging method based on a multi-fluid model (MFM). The integration enables us to cover a wide range of d*=d/Δx, where d is the particle diameter and Δx the grid size, and to perform various kinds of multiphase CFD such as standard interface tracking, particle tracking and multi-fluid simulations, and hybrid simulations by making an arbitrary combination of ITM, PTM and MFM. The field equations and numerical solution procedure of the proposed method are described in detail. To demonstrate its potential, a poly-dispersed air-water bubbly flow in a vertical square duct and an air-water bubble plume in an open vessel are computed using the combination of ITM, PTM and MFM.
    THE JAPANESE SOCIETY FOR MULTIPHASE FLOW, 2005, Progress in multiphase flow research, 1, pp. 163-170(1) (1), 163 - 170, Japanese
    Link to Kobe Univ. Repository (Kernel)

  • SOU Akira, Muhammad Ilham Maulana, HOSOKAWA Shigeo, TOMIYAMA Akio
    Though many experimental data have indicated that cavitation in a nozzle of pressure atomizer might affect liquid jet atomization, our knowledge on the effects of cavitation and Reynolds numbers, σ and Re, on cavitating flow and discharged jet is still rudimentary. Flow visualization under various values of σ and Re was, therefore, carried out by making use of a transparent two-dimensional nozzle. Tap water at atmospheric pressure was used in the experiments. Water temperature and flow rate were varied to adjust σ and Re to desired values. As a result, we confirmed that (1) cavitating flow and jet are not affected by the Reynolds number, but by the cavitation number, and (2) cavitation plays an important role in the liquid jet behavior just downstream of the nozzle exit.
    THE JAPANESE SOCIETY FOR MULTIPHASE FLOW, 2005, Progress in multiphase flow research, Vol. 1, pp. 65-70(1) (1), 65 - 70, Japanese
    Link to Kobe Univ. Repository (Kernel)

  • Cavitation and Internal Flow in a Two-Dimensional Injector Nozzle
    SOU Akira, TOMIYAMA Akio, HOSOKAWA Shigeo, NIGORIKAWA Shinji, MATSUMOTO Yoichiro
    Dec. 2004, Proc.6th US-Japan Seminar on Two-Phase Flow Dynamics, 1, 217-225, English
    [Refereed]
    International conference proceedings

  • SOU Akira, HAYASHI Kosuke, TOMIYAMA Akio
    The Japan Society of Mechanical Engineers, Oct. 2004, Transactions of the Japan Society of Mechanical Engineers. Series B., 70(698) (698), 2538 - 2544, Japanese
    Link to Kobe Univ. Repository (Kernel)

  • Numerical Simulation of Electorostatic Micro-jet (Invited Paper)
    SOU Akira
    Oct. 2004, Proc. 2004 International Microprocesses and Nanotechnology Conference, pp. 26-27, English
    [Refereed]
    International conference proceedings

  • Effect of Bebble Size on a BebblePlume and Bubbly Flow in a Bubble Column
    MAEKAWA Munenori, TOMIYAMA Akio, KAGEYAMA Masato, YOSHIDA Satoru, SOU Akira, Zun Iztok
    Sep. 2004, 3rd Int.Symp.on Two-Phase Flow Modelling and Experimenntation, CD-ROM, English
    [Refereed]
    International conference proceedings

  • Visualization of Cavitation in a Two-Dimensional Nozzle and Liquid Jet
    SOU Akira, TOMIYAMA Akio, HOSOKAWA Shigeo, NIGORIKAWA Shinji, MATSTUMOTO Yoichiro
    May 2004, Proc. 5th International Conference on Multiphase Flow, Paper №479, pp.1-12, English
    [Refereed]
    International conference proceedings

  • インジェクタのノズル内キャビテーションと液体噴流の可視化
    濁川慎司, 宋明良, 冨山明男, 細川茂雄, 松本洋一郎
    2004, 日本混相流学会年会講演会講演論文集, 2004

  • 改良SCAによる流体粒子の界面追跡計算
    林公祐, WIN M, 宋明良, 冨山明男
    2004, 日本混相流学会年会講演会講演論文集, 2004

  • 二酸化炭素-水系鉛直管内気泡流に関する研究
    嶋敏秀, 白井正貴, 冨山明男, 細川茂雄, 宋明良
    2004, 日本混相流学会年会講演会講演論文集, 2004

  • Modelong and Hybrid Simulation of Bubbly Flow(Keynote Lecture)
    TOMIYAMA Akio, SAKODA Kenichi, HAYASHI Kosuke, SOU Akira, SHIMADA Naoki, HOSOKAWA Shigeo
    2004, Proc.6th US-Japan Seminar on Two-Phase Flow Dynamics, 1,1-16, English
    [Refereed]
    International conference proceedings

  • Numerical Simulation of Liquid Jet Deformation Based on Hybrid Combination of Interface and Bubble Tracking Methods.
    SOU Akira, TOMIYAMA Akio
    Sep. 2003, Proc. 3rd European-Japanese Two-Phase Flow Group Meeting., CD-ROM, English
    [Refereed]
    International conference proceedings

  • Transient Analysis of Ventilated Tunnels with Junctions Using Graph Theory
    MAEDA Kazuo, SOU Akira, KAWASE Eiichi, MIZUNO Akisato, NAKAHORI Ichiro
    Jul. 2003, Proc. 11th Int. Symp. On Aerodynamics and Ventilation of Vehicle Tunnels, pp. 1-15, English
    [Refereed]
    International conference proceedings

  • Evaluation of Volume Tracking Algorithms for Gas-Liquid Two-Phase Flows.
    SOU Akira, HAYASHI Kosuke, NAKAJIMA Tsuyoshi
    Jul. 2003, Proc. 4th ASMER-JSME Joint Fluids Engineering Conf., CD-ROM, English
    [Refereed]
    International conference proceedings

  • 微粒化ノズル内キャビテーション流れと液体噴流の微粒化
    宋明良, 林公祐, 新田真一, 冨山明男
    2003, 日本混相流学会年会講演会講演論文集, 2003

  • カセグレン光学系による層流拡散火炎基部の自発光計測
    橋本英樹, 斎藤潤一, 宋明良, 冨山明男
    2003, 燃焼シンポジウム講演論文集, 41st

  • 液滴・噴霧燃焼の数値シミュレーション
    宋明良, 林公祐, 国本雅也, 冨山明男
    2003, 日本混相流学会年会講演会講演論文集, 2003

  • 気泡追跡法による気泡揺動運動予測の試み
    迫田健一, 宋明良, 冨山明男
    2003, 日本混相流学会年会講演会講演論文集, 2003

  • 鉛直流路内気泡の上昇速度に関する研究
    三橋真人, 冨山明男, 細川茂雄, 宋明良
    2003, 日本混相流学会年会講演会講演論文集, 2003

  • Numerical analysis of methanol droplet combustion in hot air flow
    A Sou, K Hayashi, JY Chen
    2003, COMBUSTION SCIENCE AND TECHNOLOGY IN ASIA-PACIFIC AREA: TODAY AND TOMORROW, Paper No.071, 509 - 512, English
    [Refereed]
    International conference proceedings

  • Numerical Simulation of Ventilation Tunnels with Junctions Using Graph Theory
    MAEDA Kazuo, SOU Akira, KAWASE Eiichi, MIZUNO Akisato, NAKAHORI Ichiro
    高速道路調査会, Sep. 2002, Expressways and Automobiles, 45(9) (9), 25 - 32, Japanese

  • SOU Akira, SASAI Kosuke, NAKAJIMA Tsuyoshi
    The Japan Society of Mechanical Engineers, Jul. 2002, Transactions of the Japan Society of Mechanical Engineers. Series B., 68(671) (671), 1955 - 1962, Japanese

  • SASAI Kosuke, SOU Akira, NAKAJIMA Tsuyoshi
    In the print system that water-based ink is transported from the free surface of the ink layer to the paper with electrostatic forces, conditions that independently control ink transportation of adjacent pixels have been approved through 3-D numerical analysis. The following conclusions have been obtained from this study. (1) Individual control of ink transportation of each pixel requires at least 254μm distance (correspond to 100dpi) between centers of any adjacent electrodes. (2) When a distance between centers of adjacent electrodes is 254μm, the bias voltage of adjacent electrodes which do not process ink transportation must be 0V in order to avoid Cross-Talk when the switching voltage is added. (3) When a distance between centers of adjacent electrodes is 254μm, a volume of ink transportations may vary over 7 times depending on influences from adjacent electrodes. It is necessary to reduce the influences of adjacent electrodes in order to make this print system practicable.
    The Imaging Society of Japan, May 2002, The Journal of Imaging Society of Japan, Vol. 41, No. 2, pp. 130-137(2) (2), 130 - 137, Japanese
    [Refereed]
    Scientific journal

  • SASAI Kosuke, SOU Akira, NAKAJIMA Tsuyosi
    The Japan Society of Mechanical Engineers, Feb. 2002, Transactions of the Japan Society of Mechanical Engineers. Series B., 68(666) (666), 439 - 446, Japanese

  • Numerical analysis of ignition and combustion of a deformable droplet
    Akira Sou, Toyoshige Tagawa, Kosuke Hayashi, Tsuyoshi Nakajima
    2002, International Symposium on Combustion Abstracts of Works-in-Progress Posters, 397, English
    International conference proceedings

  • 高温高圧下におけるメタン空気予混合気のレーザー着火に関する数値解析
    横山広樹, 宋明良, 中島健
    2002, 日本機械学会関西学生会卒業研究発表講演会講演前刷集, 2002

  • 界面追跡法の改良 新しい界面移流スキームの提案
    林公祐, 宋明良, 中島健
    2002, 日本機械学会関西学生会卒業研究発表講演会講演前刷集, 2002

  • 火炎面近傍での液滴と火炎の相互作用
    宋明良, 国本雅也, 中島健
    2002, 燃焼シンポジウム講演論文集, 40th

  • Akira Sou, Kosuke Sasai, Tsuyoshi Nakajima
    2002, American Society of Mechanical Engineers, Fluids Engineering Division (Publication) FED, 257(1 B) (1 B), 843 - 848, English
    International conference proceedings

  • Akira Sou, Kosuke Sasai, Tsuyoshi Nakajima
    2002, American Society of Mechanical Engineers, Fluids Engineering Division (Publication) FED, 257(1 B) (1 B), 837 - 842, English
    International conference proceedings

  • Akira Sou, Shinichi Nitta, Tsuyoshi Nakajima
    2002, American Society of Mechanical Engineers, Fluids Engineering Division (Publication) FED, 257(1 A) (1 A), 445 - 450, English
    International conference proceedings

  • Numerical Analysis of Cavitating Flow in a Nozzle
    SOU Akira, NITTA Shinichi, NAKAJIMA Tsuyoshi
    Dec. 2001, Proc. 6th Annual Conf. on Liquid Atomization and Spray Systems -Asia, 10, 173 - 178, Japanese

  • Heat Removal Design for the Modular Shielding House for Keeping Spent Fuel Transportable Storage Casks in an Interim Storage Facility
    Takahisa Nakatani, Kazuo Kawakami, Akira Iwasaki, Hideki Takatsuki, SOU Akira, NAKAJIMA Tsuyoshi
    Sep. 2001, Proc. The 13th International Symposium on the Packaging and Transportation of Radioactive Material, CD - ROM F-1, English
    International conference proceedings

  • Heat Removal Design for the Modular Shielding House for Keeping Spent Fuel Transportable Storage Casks in an Interim Storage Facility
    NAKATANI Takahisa, KAWAKAMI Kazuo, IWASAKI Akira, TAKATSUKI Hideki, SOU Akira, NAKAJIMA Tsuyoshi
    Sep. 2001, Proc. The 13th International Symposium on the Packaging and Transportation of Radioactive Material, CD-ROM, F-1
    International conference proceedings

  • SASAI Kosuke, SOU Akira, KITAO Masahiro, IZUMI Tomoo, NAKAJIMA Tsuyoshi
    In order to evaluate the possibilities for realizing a new printing system, in this study, we have proposed a new numerical analysis method that forms a relationship between an electric field and a flow field that includes a free surface. This analysis method is applied to the flow field of a water-based ink layer that has a free surface, which is greatly deformed by the actions of electrostatic force. Fundamental experiment was also conducted to judge the validity of the numerical analysis method. The following conclusions can be drawn from the results of this study. (1) Ink was deformed and transported to the paper by electrostatic force both in the numerical analysis and the experiment. (2) The effects of the initial shape of the free surface on the characteristic of ink transportation can be predicted only by the numerical analysis. (2) The effects of viscosity and surface tension of ink on the characteristic of ink transportation can be predicted. (4) These experiments indicated no clear effects of applied voltage on the ink transport time, but the numerical analysis indicated an effect that was considered pertinent. (5) It was clarified that it was possible to control ink transport time by adjusting ink viscosity, ink surface tension, externally applied voltage and the shape of the initial ink surface.
    The Imaging Society of Japan, Jun. 2001, The Journal of Imaging Society of Japan, Vol.40, No.2, pp. 116-123(2) (2), 116 - 123, Japanese
    [Refereed]
    Scientific journal

  • Interface Tracking Simulation of Ink Jet Formation by Electrostatic Force
    SOU Akira, SASAI Kosuke, NAKAJIMA Tsuyoshi
    May 2001, Proc. ASME Fluid Engineering Division Summer Meeting, FEDSM 2001-18184
    International conference proceedings

  • 変形を伴う液滴燃焼の数値解析
    宋明良, 田川豊茂, 中島健
    2001, 燃焼シンポジウム講演論文集, 39th

  • Numerical Simulation of the Instability and the breakup of a Viscous Liquid Jet
    SOU Akira, HASEGAWA Hisashi, NAKAJIMA Tsuyoshi
    Jul. 2000, Proc. 8th International Conference on Liquid Atomization and Spray Systems, pp.84-90, 121 - 127
    [Refereed]
    International conference proceedings

  • Development of the NASCA Code for Predicting Transient BT Phenomena in BWR Rod Bundles
    Hisashi Ninokata, Masanori Aritomi, Takafumi Anegawa, Takashi Hara, Hideki Kamo, Sadao Kusuno, Kaichiro Mishima, Shin-ichi Morooka, Yasushi Yamamoto, Koji Nishida, Michio Sadatomi, SOU Akira, Yasushi Yamamoto
    Apr. 2000, Proc. OECD CSNI Workshop on Advanced Thermal-Hydraulic and Neutronic Codes: Current and Future Applications, English
    International conference proceedings

  • NASCAのポスト沸騰遷移への適用性研究 (2) クロスフローモデルの検証
    西田浩二, 宋明良, 金沢徹, 二ノ方寿, 原貴
    2000, 日本原子力学会春の年会要旨集, 38th

  • NASCAのポスト沸騰遷移への適用性研究 (4) コード内容とスペーサ効果
    宋明良, 有冨正憲, 薮下幸久, 原貴
    2000, 日本原子力学会春の年会要旨集, 38th

  • NASCAのポスト沸騰遷移への適用性研究 (3) BT及びPOST-BT
    山本泰, 師岡慎一, 三島嘉一郎, 宋明良, 二ノ方寿, 楠野貞夫, 原貴
    2000, 日本原子力学会春の年会要旨集, 38th

  • NASCAのポスト沸騰遷移への適用性研究 (1) 開発状況
    二ノ方寿, 三島嘉一郎, 佐田富道雄, 宋明良, 山本泰, 西田浩二, 薮下幸久, 原貴, 楠野貞夫
    2000, 日本原子力学会春の年会要旨集, 38th

  • クーロン力によるインク薄層の変形と輸送に関する研究
    笹井浩介, 宋明良, 喜多尾真裕, 泉倫生, 中島健
    2000, Japan Hardcopy Fall Meeting, 2000

  • Numerical Simulation of Geysering using Subchannel Analysis Code.
    宋明良, 薮下幸久
    1998, 日本機械学会計算力学講演会講演論文集, 11th

  • Development of the NASCA Code for Prediction of Transient BT and Post BT Phenomena in BWR Rod Bundles
    Hisashi Ninokata, Masanori Aritomi, Takafumi Anegawa, Yoshifusa Sato, Michio Sadatomi, Kaichiro Mishima, Koji Nishida, Yasushi Yamamoto, Shin-ichi Morooka, Yukihisa Yabushita, SOU Akira, Hideki Kamo, Sadao Kusuno
    Sep. 1997, Proc. Forth International Seminar on Subchannel Analysis, 231 - 265, English
    International conference proceedings

  • Comparison of two volume tracking algorithms for bubbly flow simulation
    A Sou, A Tomiyama, Zun, I, Y Yabushita
    1997, MOVING BOUNDARIES IV, C.A., Comp. Mech. Publications, 219 - 227, English
    [Refereed]
    International conference proceedings

  • Numerical simulation of a Taylor bubble in a stagnant liquid inside a vertical pipe
    A Tomiyama, A Sou, T Sakaguchi
    Aug. 1996, JSME INTERNATIONAL JOURNAL SERIES B-FLUIDS AND THERMAL ENGINEERING, 39(3) (3), 517 - 524, English
    [Refereed]
    Scientific journal

  • TOMIYAMA Akio, HIGAKI Hitoshi, ZUN Iztok, SOU Akira, SAKAGUCHI Tadashi
    A numerical method for simulating a three-dimensional dispersed multiphase flow was proposed in the present study. The method is based on a two-way particle tracking method, which takes into account the effect of the dispersed phase on the continuous phase and vice versa. The field equations of the method are compatible with those of conventional multi-fluid models. In order to demonstrate the potential of the method, laminar bubbly upflow in a vertical square duct was simulated by taking the Eotvos number and a bubble size distribution as parameters. As a result, we obtained typical bubble distributions, i. e., wall-peak, core-peak and intermediate distributions. A void wave in the flow direction was also observed in the calculated core-peak distribution, which indicates that the method has the potential for predicting flow pattern transition from bubbly flow to slug flow.
    The Japan Society of Mechanical Engineers, Jul. 1996, Transactions of the Japan Society of Mechanical Engineers. Series B., 62(599) (599), 2558 - 2564, Japanese

  • Effects of Flow Agitation due to the Presence of Bubbles on Heat Transfer Enhancement
    TOMIYAMA Akio, SOU Akira, Iztok Zun, Yasufumi Oshima, SAKAGUCHI Tadashi
    Jul. 1996, Proc. 2nd International Conference on Numerical Methods for Multiphase Flows, ASME FED-236, 137 - 142, English
    International conference proceedings

  • Effects of Eotvos number and dimensionless liquid volumetric flux on lateral motion of a bubble in a laminar duct flow
    A Tomiyama, A Sou, Zun, I, N Kanami, T Sakaguchi
    1995, MULTIPHASE FLOW 1995, pp. 3-15, 3 - 15, English
    [Refereed]
    International conference proceedings

  • Numerical Simulation of Interaction between Deformable Bubble and Continuous Liquid Phase in Two-Dimensional Bubbly Flow
    SOU Akira, TOMIYAMA Akio, SAKAGUCHI Tadashi
    Sep. 1994, Proc. 1st International Conference on Flow Interaction cum Exhibition Lectures on Interaction of Science & Art, 474 - 477, English
    International conference proceedings

  • TOMIYAMA A., Sou Akira, Yoshikawa Hideo, Sakaguchi Tadashi
    A three-dimensional detailed numerical simulation for flows with bubbles was conducted in the present study. The simulation was based on the local instantaneous field equations of the gas liquid two-phase flow and on the interface tracking method of the volume of fluid method. The velocity and pressure fields were calculated using the modified SOLA method. The validity of the numerical method was confirmed by the comparison between measured and calculated terminal velocities and shapes of a single bubble in an infinite stagnant liquid for a wide range of the Morton number and the Eotvos number. Then, laminar bubbly flow in a vertical square duct was analyzed by making use of a periodic boundary condition. As a result, two typical void distributions, the wall peak and core peak, were obtained by varying the Eotvos number. This result agreed well with existing experimental data.
    The Japan Society of Mechanical Engineers, Aug. 1994, Transactions of the Japan Society of Mechanical Engineers. Series B., 60(576) (576), p2678 - 2685, Japanese

  • TOMIYAMA A., Sou Akira, Sakaguchi Tadashi
    The feasibility of a detailed numerical simulation of a Taylor bubble in a stagnant liquid filling in a vertical pipe was examined in the present study. The simulation was carried out using the volume of fluid method. Since there have been few quantitative experiments on Taylor bubble shape, physical experiments under a wide range of the Eotvos number (Eo) and Morton number (M) were also conducted using sucrose solution and air at room temperature and atmospheric pressure. It was confirmed by the experiments that the bluntness of the nose of the bubble, the flatness of the tail, and the liquid film thickness around the bubble are strongly affected by the two dimensionless numbers, Eo and M. Calculated terminal rising velocities and bubble shapes agreed fairly well with the measured ones, which indicates that the effects of drag force, buoyancy and surface tension force on the bubble were well predicted in the simulation.
    The Japan Society of Mechanical Engineers, Jul. 1994, Transactions of the Japan Society of Mechanical Engineers. Series B., 60(575) (575), p2439 - 2446, Japanese

  • Numerical Simulation of a Taylor Bubble in a Stagnant Liquid
    TOMIYAMA Akio, SOU Akira, SAKAGUCHI Tadashi
    ASME, Jun. 1994, Proc. 1st International Conference on Numerical Methods in Multiphase Flows, ASME FED-185, 269 - 276, English
    International conference proceedings

  • Numerical Simulation of Interaction between Deformable Bubble and Continuous Liquid Phase in Two-Dimensional Bubbly Flow
    SOU Akira, TOMIYAMA Akio, SAKAGUCHI Tadashi
    Apr. 1994, Proc. 1st International Conference on Flow Interaction cum Exhibition / Lectures on Interaction of Science & Art, pp.474-477
    International conference proceedings

  • Effect of Some Dimensionless Numbers on the Motion of a Single Bubble in a Duct Flow.
    宋明良, 冨山明男, 遠山巧, 坂口忠司
    1994, 混相流シンポジウム講演論文集, 13rd

  • Prediction of Void Distribution in Two-Phase Bubbly Flow in a Vertical Pipe.
    冨山明男, 宋明良, 河南暢剛, 坂口忠司
    1994, 日本機械学会九州支部地方講演会講演論文集, 1994(Kitakyushu) (Kitakyushu)

  • 3-DIMENSIONAL DETAILED NUMERICAL SIMULATION OF BUBBLY UPFLOW IN A VERTICAL SQUARE DUCT
    A TOMIYAMA, A SOU, ZUN, I, T SAKAGUCHI
    1994, PROCEEDINGS OF THE GERMAN-JAPANESE SYMPOSIUM ON MULTI-PHASE FLOW, KfK-5389, 487 - 498, English
    International conference proceedings

  • NUMERICAL-ANALYSIS OF BUBBLE MOTION WITH THE VOF METHOD
    A TOMIYAMA, ZUN, I, A SOU, T SAKAGUCHI
    Jun. 1993, NUCLEAR ENGINEERING AND DESIGN, 141(1-2) (1-2), 69 - 82, English
    [Refereed]
    Scientific journal

  • Numerical Analysis of Two-Phase Bubbly Flow.
    宋明良, 冨山明男, 坂口忠司
    1993, 日本機械学会通常総会講演会講演論文集, 70th(Pt 2) (Pt 2)

  • Three-Dimensional Detailed Numerical Simulation of Bubbly Flow in a Rectangular Duct.
    冨山明男, 宋明良, 吉川秀雄, 坂口忠司
    1993, 日本機械学会熱工学部門講演会講演論文集, 1993

  • Numerical Analysis of a Single Bubble by VOF Method
    TOMIYAMA Akio, SOU Akira, MINAGAWA Hisato, SAKAGUCHI Tadashi
    Jan. 1993, JSME International Journal, Ser. B, Vol. 36, No. 1, pp. 51(1) (1), 51 - 51
    [Refereed]
    Scientific journal

  • Numerical Analysis of Bubble Motion with VOF Method
    TOMIYAMA Akio, Iztok Zun, SOU Akira, SAKAGUCHI Tadashi
    Jul. 1992, Proc. Japan-U.S. Seminar on Two-Phase Flow Dynamics, 67, 67 - 84, English
    [Invited]
    International conference proceedings

  • An examination on applicability of the VOF method to bubble analyses.
    宋明良, 冨山明男, 坂口忠司
    1992, 日本伝熱シンポジウム講演論文集, 29th

  • 揺動気泡の数値解析
    宋明良
    1992, 混相流シンポジウム'92講演論文集

  • Numerical Simulation of a Single Bubble Rising in Liquids Using the Volume of Fluid Method
    Tomiyama Akio, SOU Akira, MINAGAWA Hisato, SAKAGUCHI Tadashi
    Sep. 1991, Proc. International Conference on Multiphase Flows '91, 1, 373 - 376, English
    International conference proceedings

  • TOMIYARNA A., SOU Akira, MINAGAWA Hisato, SAKAGUCHI Tadashi
    In order to examine the feasibility of direct simulation of bubbly flows, the applicability of the VOF (volume of fluid) method to the analyses of a single rising bubble was examined in this study. Calculated bubble shapes and terminal velocities under wide ranges of Eotvos number and Morton number were compared with the experimental data summarized by Grace et al. Except for the cases when bubble shapes are spherical-cap and skirted, the VOF method could predict them well by assigning only eight cells to the bubble diameter. Hence, it was confirmed that some modification of this method will enable us to simulate bubbly flows directly under a wide-range of flow conditions. Moreover, the relation between a bubble shape and velocity distribution was examined within the ranges in which the VOF method is valid. It was found that the secondary vortex appearing in wobbling bubbles induces the velocity component normal to the bubble interface, and this velocity is one of the causes of the wobbling shape of the bubble.
    The Japan Society of Mechanical Engineers, Jul. 1991, Transactions of the Japan Society of Mechanical Engineers. Series B., 57(539) (539), p2167 - 2173, Japanese

  • Analysis of Bubble Behavior with the Volume of Fluid Method.
    冨山明男, 宋明良, 松井幹, 坂口忠司
    1991, 日本機械学会流体工学部門講演会講演論文集, 1991

■ MISC
  • 舶用機関燃料インジェクター内キャビテーションの可視化実験と予測モデルの構築
    岡見夏花, 木村一貴, 宋明良, 齊藤俊之
    2021, マリンエンジニアリング学術講演会講演論文集, 91st

  • 舶用機関燃料インジェクタ内キャビテーションの抑制提案と効果検証
    木村一貴, 岡見夏花, 宋明良, 齋藤俊之
    2021, マリンエンジニアリング学術講演会講演論文集, 91st

  • Effects of Injector Size and Hole Number on String Cavitation in Mini-Sac Nozzles
    木村一至, 中道勝久, 脇坂優志, 宋明良, 和田好隆, 植木義治, 横畑英明
    2020, 微粒化シンポジウム講演論文集(CD-ROM), 29th

  • Analysis of Three-Dimensional Flow Structure in Fuel Injector: Application of Conditional Sampling for Re-Constructions of Flow Field and Identification of Vortex Structure
    岡拓海, 西尾茂, 宋明良, 西田恵哉
    2020, 可視化情報シンポジウム(CD-ROM), 48th

  • 第27回微粒化シンポジウムレビュー : 第2日目,A室 : ディーゼル噴霧Ⅰ (第27回微粒化シンポジウム特集号)
    宋 明良
    日本液体微粒化学会, Jul. 2019, 微粒化 = Atomization : journal of the ILASS-Japan, 28(94) (94), 28 - 30, Japanese

  • Atomization Process of a Planar Liquid Sheet by Cocurrent Air Flows (Visualization of Liquid Sheet Atomization and Development of Droplet Diameter Model)
    大島逸平, 宋明良
    2019, 微粒化シンポジウム講演論文集(CD-ROM), 28th

  • Effects of a Hole Length on Cavitation in a Fuel Injector Nozzle and Discharged Liquid Jets (First Report)
    増田誠, 宋明良
    2019, 自動車技術会論文集(Web), 50(2) (2)

  • Effects of a Hole Length on Cavitation in a Fuel Injector Nozzle and Discharged Liquid Jets (Second Report)
    増田誠, 宋明良
    2019, 自動車技術会論文集(Web), 50(2) (2)

  • Atomization Process of Planar Liquid Sheet with Skew Air Flows
    西山真悟, 大石一稀, 今井智貴, 宋明良, 松浦一哲
    2019, 微粒化シンポジウム講演論文集(CD-ROM), 28th

  • The Effects of Needle Valve Motion on Transient Flow in Fuel Injector and Liquid Jet
    松上晃平, 三輪誠, 宋明良, 和田好隆, 植木義治, 横畑英明
    2019, 微粒化シンポジウム講演論文集(CD-ROM), 28th

  • Atomization Process of a Planar Liquid Sheet by Cocurrent Air Flows (Formation and Breakup of Ligaments after the Rupture of a Bag)
    今井智貴, 大石一稀, 西山真悟, 大島逸平, 宋明良
    2019, 微粒化シンポジウム講演論文集(CD-ROM), 28th

  • Image Analysis of Liquid Jet Atomization in Air Crossflow
    西尾茂, 宗村宏晃, 林博昭, 宋明良, 西田恵哉
    2019, 可視化情報シンポジウム(CD-ROM), 47th

  • Analysis of Longitudinal Vortex Formation in Fuel Injectors
    西尾茂, 中村崚登, 岡拓海, 宋明良, 西田恵哉
    2019, 可視化情報シンポジウム(CD-ROM), 47th

  • 研究室紹介 神戸大学 大学院海事科学研究科 宋研究室(エネルギー流体科学研究室)—Sou Laboratory, Graduate School of Maritime Sciences, Kobe University (Energy and Fluid Science Laboratory)
    宋 明良
    大阪 : 日本混相流学会, Dec. 2018, 混相流 = Japanese journal of multiphase flow, 32(4) (4), 458 - 462, Japanese

  • Final Report of Research Committee for Airblast Atomization of Liquid Sheet
    宋 明良, 井上 智博, 齊藤 寛泰
    日本液体微粒化学会, Nov. 2017, 微粒化 = Atomization : journal of the ILASS-Japan, 26(89) (89), 61 - 63, Japanese

  • Effects of Gas and Liquid Fluid Properties and Nozzle Geometries on Atomization Process of a Planar Liquid Sheet by Co-current Air Flows
    大島 逸平, 宋 明良
    日本液体微粒化学会, Nov. 2017, 微粒化 = Atomization : journal of the ILASS-Japan, 26(89) (89), 64 - 70, Japanese

  • コラムを有する円柱状海洋構造物の波荷重
    平井崇起, 山中伸悟, 宋明良, 二瓶泰範
    2017, 日本船舶海洋工学会講演会論文集(CD-ROM), (25) (25)

  • Numerical Simulation of Turbulent Cavitation Flow in a Fuel Injector
    猪阪 史典, 宋 明良
    日本液体微粒化学会, 19 Dec. 2016, 微粒化シンポジウム講演論文集, 25, 152 - 156, Japanese

  • Numerical Simulation of Turbulent Cavitation Flow with Bubbles and Sheets
    鷲見 謙彰, 宋 明良
    日本液体微粒化学会, 19 Dec. 2016, 微粒化シンポジウム講演論文集, 25, 146 - 151, Japanese

  • High-speed photography of the cavitation in small-nozzle using synchrotron X-ray
    三輪 誠, Prasetya Rubby, 笠原 巧, 宋 明良, 文 石洙, 和田 好隆, 横畑 英明
    日本液体微粒化学会, 19 Dec. 2016, 微粒化シンポジウム講演論文集, 25, 141 - 145, Japanese

  • Activity of Research Committee for Airblast Atomization of Liquid Sheet
    宋 明良, 井上 智博, 齋藤 寛泰, 松浦 一哲
    日本液体微粒化学会, 19 Dec. 2016, 微粒化シンポジウム講演論文集, 25, 11 - 13, Japanese

  • Visualization Experiments of Planar Liquid Sheet Atomization by Air Flows
    大島 逸平, 川畑 諒太, 宋 明良
    日本液体微粒化学会, 17 Dec. 2015, 微粒化シンポジウム講演論文集, 24, 17 - 23, Japanese

  • Tanimoto Reika, Yamanaka Shingo, Sou Akira, Nihei Yasunori
    The Japan Society of Naval Architects and Ocean Engineers, Nov. 2015, Conference Proceedings The Japan Society of Naval Architects and Ocean Engineers, 21(21) (21), 251 - 253, Japanese

  • Effects of Injector Geometry on Cavitation Flow in Mini-Sac Nozzle
    南 慎一郎, Pratama Raditya Hendra, 宋 明良
    日本液体微粒化学会, 18 Dec. 2014, 微粒化シンポジウム講演論文集, 23, 99 - 104, Japanese

  • Effects of Various Factors on Liquid Sheet Deformation by Air Flow
    大島 逸平, 宋 明良
    日本液体微粒化学会, 18 Dec. 2014, 微粒化シンポジウム講演論文集, 23, 137 - 142, Japanese

  • 第22回微粒化シンポジウムレビュー : ディーゼル噴霧Ⅱ (第22回微粒化シンポジウム特集号)
    宋 明良
    日本液体微粒化学会, Jul. 2014, 微粒化 = Atomization : journal of the ILASS-Japan, 23(79) (79), 30 - 32, Japanese

  • Numerical Simulation on Mixture Process of Urea-Water in Urea SCR
    林 将義, 宋 明良
    日本液体微粒化学会, 18 Dec. 2013, 微粒化シンポジウム講演論文集, 22, 414 - 420, Japanese

  • STRING CAVITATION IN FUEL INJECTOR (The 16th Conference of ILASS-Asia)
    Pratama Raditya Hendra, SOU Akira
    日本液体微粒化学会, 18 Dec. 2013, 微粒化シンポジウム講演論文集, 22, 45 - 51, English

  • Reviews of 21st ILASS-Japan Symposium (The First Day, Room A : Numerical Simulation I, II)
    SOU Akira
    日本液体微粒化学会, 31 Jul. 2013, 微粒化 = Atomization : journal of the ILASS-Japan, 22(76) (76), 108 - 110, Japanese

  • Reviews of 12th ICLASS 2012 : The Fourth Day : Cavitation
    SOU Akira
    31 Mar. 2013, 微粒化 = Atomization : journal of the ILASS-Japan, 22(75) (75), 46 - 47, Japanese

  • ABE Akihisa, SOU Akira, MIMURA Haruo, NISHIO Shigeru
    The present paper reports the fundamental research for the sterilization treatment of marine bacteria contained in ships' ballast water. In the field of maritime sciences, destruction of marine ecosystem caused by sea creatures carried in ships' ballast water to different seas is a serious international problem. In order to solve the problem, a new sterilization technique using shock wave and microbubble is proposed to develop more secure and environmentally friendly treatment method for ships' ballast water. This method applies mechanical and chemical effects of shock pressures and free radicals generated by contraction and collapse of microbubbles to marine bacteria. Our previous and ongoing works are presented and prospective approaches that need to be solved the problems are described.
    THE JAPANESE SOCIETY FOR MULTIPHASE FLOW, 15 Mar. 2013, JAPANESE JOURNAL OF MULTIPHASE FLOW, 27(1) (1), 45 - 52, Japanese
    Introduction scientific journal

  • SOU AKIRA
    Applications of multi-phase flow technologies to clean marine engineering are introduced. Large efforts have been made to reduce CO2, SOx, NOx and Particulate matter (PM) emissions from marine diesel engines. Urea Selective Catalytic Reduction (SCR) system is one of the most promising technology to largely reduce NOx emission. PM in exhaust gas may deposit on a honeycomb SCR catalyst, which increases pressure drop, blocks the flow area and decreases NOx reduction performance. Air blow (soot blow) can be effective for removing PM on a catalyst. An experimental investigation confirms that (1) large pore diameter of SCR catalyst and optimum exhaust gas velocity prevent PM accumulation, (2) PM accumulates mainly at the inlet and exit of the catalyst, and (3) high pressure soot blow removes PM.
    日本混相流学会, Mar. 2013, Japanese Journal of Multiphase Flow, 27(1) (1), 45 - 52, Japanese
    [Invited]

  • Detailed Simulation of Cavitation in an Injector
    FUKUDA Takumi, KINUGAWA Yusuke, SOU Akira
    17 Dec. 2012, 微粒化シンポジウム講演論文集 = Symposium (ILASS-Japan) on Atomization, 21, 41 - 45, Japanese

  • Reviews of 20^ ILASS-Japan Symposium : The Second Day, Room B : Numerical Simulation, Atomization Mechanism I
    SOU Akira
    日本液体微粒化学会, 31 Jul. 2012, 微粒化 = Atomization : journal of the ILASS-Japan, 21(73) (73), 57 - 60, Japanese

  • SOU Akira, ABE Akihisa
    Japan Institute of Navigation, 2012, NAVIGATION, 180(0) (0), 56 - 62, Japanese

  • Bubble Dynamics Model for Predicting Cavitation in a Nozzle
    KINUGAWA Yusuke, KINUGASA Tomoyuki, SOU Akira
    16 Dec. 2011, 微粒化シンポジウム講演論文集 = Symposium (ILASS-Japan) on Atomization, 20, 141 - 146, Japanese

  • Twenty Years' Activity of ILASS-Japan
    SOU Akira
    日本液体微粒化学会, 30 Nov. 2011, Journal of the ILASS-Japan, 20(71) (71), 151 - 153, Japanese
    Introduction scientific journal

  • SOU Akira
    The Japan Institute of Marine Engineering, 01 Nov. 2011, Marine Engineering, 46(6) (6), 931 - 934, Japanese
    Introduction scientific journal

  • ABE Akihisa, NISHIO Shigeru, SOU Akira, MIMURA Haruo
     The present paper reports on the development of a new technique of marine bacteria sterilization of ship ballast water using underwater shock waves. The interactions between microbubbles and shock waves are utilized in the proposed technique. The contraction and expansion motion of microbubbles provide biochemical and mechanical sterilization effects by means of free radicals and shock wave pressures. Theoretical and experimental approaches to the development of the present technique are described. The examination of optimum conditions for higher rebound-pressure generation from microbubbles, the observation and pressure measurements in the interaction field between microbubbles and shock waves, the performance of a unique shock wave generator and the bio-experiments with the present technique are featured in this paper.
    The Japan Institute of Marine Engineering, 01 Jul. 2011, Marine Engineering, 46(4) (4), 549 - 554, Japanese

  • CHOI Young Jin, TAKAHASHI Keiko, ABE Akihisa, NISHIO Shigeru, SOU Akira
    Japan Institute of Navigation, 2011, NAVIGATION, 177(0) (0), 43 - 47, Japanese

  • Special Issue on NTHAS6 (Selected papers from 6th Japan-Korea Symposium on Nuclear Thermal Hydraulics and Safety, November 24-27,2008, Bankoku-Shinryokan, Okinawa, Japan) Volume 47, Number 9 Preface
    Nobuatsu Tanaka, Akimaro Kawahara, Akira Sou, Tatsuya Hazuku, Hidetoshi Okada, Koichiro Ezato, Yoshiro Kudo, Chikako Iwaki
    Sep. 2010, JOURNAL OF NUCLEAR SCIENCE AND TECHNOLOGY, 47(9) (9), English
    [Refereed]
    Others

  • Internal Flows in Nozzles
    TAMAKI Nobushige, SOU Akira
    31 Mar. 2010, 微粒化 = Atomization : journal of the ILASS-Japan, 19(65) (65), 2 - 2, Japanese

  • Cavitating Flow in a Nozzle of a Plain Orifice Atomizer and its Effects on Liquid Jet Deformation
    SOU Akira
    日本液体微粒化学会, 31 Mar. 2010, Atomization, 19(65) (65), 9 - 17, Japanese

  • Large Eddy Simulation of Turbulent Cavitation Flow in a Nozzle
    GOSHIMA Daisuke, SOU Akira, HAYASHI Kosuke, TOMIYAMA Akio
    16 Dec. 2009, 微粒化シンポジウム講演論文集 = Symposium (ILASS-Japan) on Atomization, 18, 113 - 117, Japanese

  • ISHIDA Kenji, SOU Akira
    The Japan Institute of Marine Engineering, 01 Jul. 2009, Marine Engineering, 44(4) (4), 566 - 569, Japanese

  • 水中衝撃波の収束と微小気泡群を用いたバラスト水処理技術の開発
    阿部晃久, WAN Biyu, 三村治夫, 西尾茂, 宋明良, 辻井宣人, 福田真也
    2009, 日本船舶海洋工学会講演会論文集, (9K) (9K)

  • Report on the 12th Organized Multiphase Flow Forum (OMF2008-Nara)
    HOSOKAWA Shigeo, OKAWA Tomio, SOU Akira
    記事種別: 会議・学会報告・シンポジウム
    日本混相流学会, 15 Dec. 2008, Japanese journal of multiphase flow, 22(4) (4), 452 - 454, Japanese

  • Earth Environment and Multiphase Flows : Sustainability and Global Environment I
    高橋 弘, 宋 明良
    15 Mar. 2008, 混相流, 22(1) (1), 7 - 7, Japanese

  • RC228 噴霧特性の計測・数値解析手法の最新技術に関する調査研究分科会研究報告書
    SOU AKIRA
    2008, 日本機械学会, Japanese
    Introduction other

  • Report on Annual Conference of ILASS-Korea 2007
    SOU Akira
    記事種別: 会議・学会報告・シンポジウム
    日本液体微粒化学会, 31 Dec. 2007, Atomization, 16(56) (56), 85 - 87, Japanese

  • Dimensionless Index for Cavitation in Nozzles of Various Geometries
    MAULANA Muhammad Ilham, ISOZAKI Kenji, SOU Akira, HOSOKAWA Shigeo, TOMIYAMA Akio
    19 Dec. 2007, 微粒化シンポジウム講演論文集 = Symposium (ILASS-Japan) on Atomization, 16, 321 - 324, English

  • Cavitation in Nozzles and Mechanism of Atomization Enhancement
    SOU Akira
    19 Dec. 2007, 微粒化シンポジウム講演論文集 = Symposium (ILASS-Japan) on Atomization, 16, 23 - 26, Japanese

  • Report on 5th Joint ASME/JSME Fluids Engineering Conference
    SOU Akira
    Oct. 2007, Int. Information Center for Multiphase Flow (ICeM) Newsletter, No. 29, pp. 2-3, English
    Meeting report

  • Breakup Mechanism : Instability
    SOU Akira
    31 Jan. 2007, 微粒化 = Atomization : journal of the ILASS-Japan, 15(52) (52), 93 - 94, Japanese

  • Modeling and Simulation : Simulation-III
    SOU Akira
    31 Jan. 2007, Atomization, 15(52) (52), 133 - 134, Japanese
    Introduction scientific journal

  • SOU Akira
    公益社団法人 日本マリンエンジニアリング学会, 2007, Marine Engineering, 42(1) (1), 81 - 86, Japanese
    Introduction scientific journal

  • ICLASS-2006セッション概要, 分裂機構：不安定性
    SOU Akira
    日本液体微粒化学会, Jan. 2007, Atomization, Vol. 15, No. 52, pp. 93-94(4) (4), 89 - 226, Japanese
    Introduction scientific journal

  • HOSOKAWA Shigeo, SOU Akira, Maulana Muhammad Ilham, TOMIYAMA Akio
    Effects of ambient gas density on a spray cone angle, a spray tip penetration and an entrainment momentum flux of an unsteady spray formed by a swirl injector were investigated using an image processing method and PIV. Nitrogen, carbon dioxide, argon and helium gases were used for ambient gas to change the ambient gas density under constant pressure conditions. The spray cone angle and the spray tip penetration were measured from averaged digital images of the spray. As a result, it was confirmed that the spray cone angle and the spray tip penetration of the unsteady spray from the swirl injector depend on the ambient gas density. The angle and the penetration decrease as the ambient gas density increases due to the interaction between the ambient gas and the spray droplets. The momentum flux of entrainment flow increases with the gas density.
    The Visualization Society of Japan, 2006, Journal of the Visualization Society of Japan, 26(1) (1), 303 - 304, Japanese

  • ノズル噴孔内キャビテーション乱流と液体噴流の微粒化促進
    SOU Akira
    Aug. 2005, 日本機械学会「RC215微粒化効率向上のための噴霧操作技術に関する調査研究分科会」中間報告書, pp. 217-224, Japanese
    Report scientific journal

  • NOMURA Ryosuke, SOU Akira, HOSOKAWA Shigeo, TOMIYAMA Akio
    The Japan Society of Mechanical Engineers, 2005, The Proceedings of the Fluids engineering conference, 2005(0) (0), 82 - 82, Japanese

  • Visualization and LDV Measurement of Cavitation Flow in a Nozzle
    SOU Akira, NIGORIKAWA Shinji, TOMIYAMA Akio, HOSOKAWA Shigeo, MATSUMOTO Yoichiro
    17 Dec. 2004, 微粒化シンポジウム講演論文集 = Symposium (ILASS-Japan) on Atomization, 13, 167 - 172, Japanese

  • Report on 3rd International Symposium on Two-Phase Flow Modeliing and Experimentation
    SOU Akira
    Oct. 2004, 23rd issue of Int.Information Center for Multiphase Flow Newsletter, 12-13, English
    Others

  • 界面追跡法と気泡追跡法のハイブリッド手法（ノズル内キャビテーション流れと液体噴流の数値解析）
    宋 明良
    Aug. 2004, 日本機械学会「RC203微粒化における標準データベースの構築に関する調査研究分科会」研究報告書（中間）, pp.118-127, Japanese
    Introduction scientific journal

  • ノズル内キャビテーション流れモデル
    宋 明良
    Jun. 2004, 日本機械学会「RC197エンジンの燃焼モデリングに関する調査研究分科会（フェーズ2）」最終報告書, 448-461, Japanese
    Introduction scientific journal

  • ノズル内キャビテーション流れと液体噴流変形過程の数値解析
    宋 明良
    Aug. 2003, 日本機械学会「RC203微粒化における標準データベースの構築に関する調査研究分科会」研究報告書（中間）, pp. 94-98, Japanese
    Introduction scientific journal

  • In a Forest at University of California,Berkeley
    SOU Akira
    日本液体微粒化学会, 01 Jun. 2003, Atomization, 12(38) (38), 34 - 37, Japanese

  • SOU Akira, HAYASHI Kosuke, TOMIYAMA Akio
    The Japan Society of Mechanical Engineers, 2003, The Proceedings of The Computational Mechanics Conference, 2003(0) (0), 111 - 112, Japanese

  • Numerical Analysis of Liquid Jet Deformation and Atomization Promoted by the Turbulence in a Nozzle
    SOU Akira, NITTA Shinichi, NAKAJIMA Tsuyoshi
    19 Dec. 2002, 微粒化シンポジウム講演論文集 = Symposium (ILASS-Japan) on Atomization, 11, 62 - 67, Japanese

  • Numerical Simulation of Liquid Atomization
    MORIYOSHI Yasuo, SOU Akira
    日本液体微粒化学会, 29 Mar. 2002, Atomization, 11(33) (33), 10 - 10, Japanese

  • Numerical Simulation of Cavitating Flow in an Atomization Nozzle
    SOU Akira
    日本液体微粒化学会, 29 Mar. 2002, Atomization, 11(33) (33), 44 - 50, Japanese

  • Numerical Simulation of Liquid Atomization by Commercial CFD Codes
    SOU Akira, MORIYOSHI Yasuo
    29 Mar. 2002, 微粒化 = Atomization : journal of the ILASS-Japan, 11(33) (33), 51 - 51, Japanese

  • SOU Akira, KAWASE Eiichi, NAKAJIMA Tsuyoshi
    Recently tunnels are going to have more complicated structures, such as the tunnels including junctions of traffic road and ducts for ventilation. It is, therefore, difficult to predict the air flow and densities of pollutants in the tunnel. A numerical method based on Graph Theory to predict them in ventilated tunnel with junctions and ducts was proposed. The applicability was clarified through the simulation of a tunnel with longitudinal ventilation system.
    The Japan Society of Mechanical Engineers, 2002, The Proceedings of Conference of Kansai Branch, 2002(0) (0), _12 - 45_-_12-46_, Japanese

  • Numerical Analysis of Cavitating Flow in a Spray Nozzle
    SOU A.
    2001, Proc. ICLASS-Asia 2001, 283 - 288

  • SOU Akira, KITAO Masahiro, SASAI Kosuke, NAKAJIMA Tsuyoshi
    In order to clarify the effects of ink viscosity and electric field on the characteristics of an electrostatic ink jet printer, a numerical simulation of ink behavior in an electrostatic field was conducted in the present study. To reduce the effects of initial shape of ink free surface the structure to hold ink in a tiny cylindrical hole was adopted, and the validity of it was examined. As a result, it was clarified that the structure reduced the effects of initial shape of free surface on the time for ink to be transported onto a paper. Especially when a high voltage was charged, the ink transportation time was almost constant under wide range of ink viscosity. These results showed us that the ink holder played a good role on stable ink transportation, which gave us a high possibility to develop a new electrostatic ink jet printer.
    The Japan Society of Mechanical Engineers, 2001, The Proceedings of Conference of Kansai Branch, 2001(0) (0), _10 - 45_-_10-46_, Japanese

  • Numerical Analysis of Cavitation Induced Turbulence in Spray Nozzle
    SOU Akira, MASAKI Yoichi, NAKAJIMA Tsuyoshi
    11 Dec. 2000, 微粒化シンポジウム講演論文集 = Symposium (ILASS-Japan) on Atomization, 9, 251 - 256, Japanese

  • NINOKATA Hisashi, HARA Takashi, KUSUNO Sadao, ARITOMI Masanori, MISHIMA Kaichiro, SADATOMI Michio, SOU Akira, YAMAMOTO Yasushi, MOROOKA Shinich, NISHIDA Koji, YABUSHITA Yukuhisa
    This paper describes an overview of the NASCA code development program being aimed at improved capabilities of analyzing transient boiling two-phase flow phenomena, boiling transition (BT) and post BT phenomena in BWR rod bundles. Under the BWR operating conditions, we assume that BT on the rod surface can be explained by the liquid film dryout. Hence two-phase flows are described by the two-fluid three-field model. Major physical processes of significance are : 1) two-phase flow turbulent mixing and void drift that affect the void distribution in a bundle; 2) droplet entrainment and deposition phenomena including spacer effects on BT and post BT in a subchannel; 3) rewetting phenomena during the post BT. Mechanistic approaches to the physical modeling related to these phenomena are discussed and the basic framework and scope of the code development are outlined.
    The Japan Society of Mechanical Engineers, 2000, The proceedings of the JSME annual meeting, 2000(0) (0), 655 - 656, Japanese

  • SOU Akira, ARITOMI Masanori, MISHIMA Kaichiro, NINOKATA Hisashi, YABUSHITA Yukuhisa, HARA Takashi
    Transient subcahnnel analysis code NASCA has been developed to predict boiling transition (BT) and rewetting in BWR reactors. NASCA code is based on three-fluid model, and has a liquid film-droplet model, a new spacer-induced droplet deposition model, a modified cross-flow model, fine subchannel model, etc. The spacer-induced droplet deposition model incorporating three spacer effects, such as (1) turbulent enhancement effect, (2) secondary flow effect and (3) run off effect was proposed. Predicted critical power was found to be in good agreement with existing experimental data by applying the spacer model. Moreover, it was clarified that spacers played a significant role on transient BT and rewetting phenomena.
    The Japan Society of Mechanical Engineers, 2000, The proceedings of the JSME annual meeting, 2000(0) (0), 657 - 658, Japanese

  • YAMAMOTO Yasushi, MOROOKA Shinich, MISHIMA Kaichiro, SOU Akira, NINOKATA Hisashi, HARA Takashi, KUSUNO Sadao
    Subchannel analysis code NASCA has been developed to calculate boiling transition and post-boiling transition behavior in BWR fuel. This paper is aimed to verify the applicability of NASCA code to BWR fuel. First, the critical power prediction analyses were performed. The analysis results showed good agreement with BWR fuel mockup test data. Then, transition test analyses were performed. Analysis results showed that calculated dryout time was longer than measured data in the case of re-circulation pump trip test, however, NASCA had much potential to calculate post-boiling transition behavior.
    The Japan Society of Mechanical Engineers, 2000, The proceedings of the JSME annual meeting, 2000(0) (0), 659 - 660, Japanese

  • NISHIDA Koji, KANAZAWA Toru, SADATOMI Michio, SOU Akira, NINOKATA Hisashi, HARA Takashi
    A cross flow model was developed for the three-fluid subchannel analysis code NASCA. The adequacy of the model was confirmed by comparing with calculated and measured subchannel mass flux and quality distributions obtained by 3×3 rod bundle experiment. To evaluate the applicability of the code to the post BT condition, the heater rod surface temperature in 8×8 mock-up bundle at the post BT condition was analyzed.
    The Japan Society of Mechanical Engineers, 2000, The proceedings of the JSME annual meeting, 2000(0) (0), 661 - 662, Japanese

  • Numerical Analysis of a Liquid Jet by Interface Tracking Method
    SOU Akira, HASEGAWA Hisashi, NAKAJIMA Tsuyoshi
    1999, 微粒化シンポジウム講演論文集 = Symposium (ILASS-Japan) on Atomization, 8, 167 - 172, Japanese

  • Three-Dimensional Simulation of Bubbles using Interface Tracking Method
    TOMIYAMA A., SOU A.
    15 Mar. 1995, 混相流, 9(1) (1), 巻頭言, Japanese

  • Interaction of Twe Bubbles in Train
    Akira Sou, Akio Tomiyama, Iztok Zun, Tadashi Sakaguchi
    Kobe University, 01 Mar. 1995, Memoirs of the Graduate School of Science and Technology, Kobe University. A, 13, 67 - 84, English

■ Books And Other Publications
  • 流体力学
    冨山, 明男, 梶島, 岳夫, 加藤, 健司, 宋, 明良, 高比良, 裕之, 林, 公祐, 細川, 茂雄
    Joint work, 朝倉書店, Apr. 2020, Japanese, ISBN: 9784254237955

■ Lectures, oral presentations, etc.
  • 薄膜状気流を受ける円柱状液体噴流の微粒化過程
    西出修一郎, 宋 明良, 和田好隆, 植木義治
    第33回微粒化シンポジウム2024, Dec. 2024, Japanese
    Oral presentation

  • ディーゼル燃料インジェクタ内の循環予測モデルの構築
    竹下航平, 宋 明良, 和田好隆, 植木義治
    第33回微粒化シンポジウム2024, Dec. 2024, Japanese
    Oral presentation

  • 燃料物性値がディーゼル燃料インジェクタ内流動と噴流に及ぼす影響
    志岐亮太朗, 宋 明良, 和田好隆, 植木義治
    第33回微粒化シンポジウム2024, Dec. 2024, Japanese
    Oral presentation

  • Bag Formation Phenomenon in Coaxial Twin-Fluid Atomizer
    Andreas Mahendri Putra, Akira Sou, Yoshitaka Wada, Yoshiharu Ueki
    第33回微粒化シンポジウム2024, Dec. 2024, English
    Oral presentation

  • 複数のコラムを有する円柱状構造物の浮体運動モデル
    渋谷正剛, 宋 明良
    日本船舶海洋工学会令和6年秋季講演会, Nov. 2024, Japanese
    Oral presentation

  • 固有直交分解法を用いた多噴孔燃料インジェクタ内における主要流場構造の分析 - 第3報 : 流体力学的評価とデータ同期 -
    西尾 茂, 出井郁哉, 宋 明良, 西田恵哉
    第 52 回 可視化情報シンポジウム, Jul. 2024, Japanese
    Oral presentation

  • 二流体噴射弁の微粒化様式と噴霧特性
    杉拓海, 宋明良, 和田好隆, 植木義治
    第32回微粒化シンポジウム2023, Nov. 2023, Japanese
    Oral presentation

  • 二流体噴射弁の微粒化過程に関する数値解析
    間島玲奈, 宋明良, 和田好隆, 植木義治
    第32回微粒化シンポジウム2023, Nov. 2023, Japanese
    Oral presentation

  • コラムを有する円柱状構造物の浮体運動モデル
    山口生真, 宋 明良
    日本船舶海洋工学会令和５年秋季講演会, Nov. 2023, Japanese
    Oral presentation

  • 矩形流路実験による旋回流を誘起する燃料インジェクタの提案
    松尾萌花, 宋明良, 和田好隆, 植木義治
    第31回微粒化シンポジウム2022, Dec. 2022, Japanese
    Oral presentation

  • ミニサックノズルの閉弁過程における旋回流動の数値解析
    片山智貴, 宋明良, 和田好隆, 植木義治
    第31回微粒化シンポジウム2022, Dec. 2022, Japanese
    Oral presentation

  • コラムを有する円柱状浮体の3自由度運動モデル
    山口生真, 宋明良
    日本船舶海洋工学会令和4年秋季講演会, Nov. 2022, Japanese
    Oral presentation

  • コラムを有する円柱状構造物に働く波荷重モデル
    伊藤樹里, 宋明良
    日本船舶海洋工学会令和4年秋季講演会, Nov. 2022, Japanese
    Oral presentation

  • X-Ray High-Speed Image Analysis of String Cavitation in Mini-Sac Nozzle and Hollow-Cone Spray
    沈 東平, 三輪 誠, 宋 明良, 和田 好隆, 植木 義治, 横畑 英明
    第30回微粒化シンポジウム2021, Dec. 2021, Japanese
    Oral presentation

  • A Study on the Relationship between Cavitation Flow in Fuel Injector and Deposit
    坂東 太郎, 脇坂 優志, 宋 明良, 和田 好隆, 植木 義治, 横畑 英明
    第30回微粒化シンポジウム2021, Dec. 2021, Japanese
    Oral presentation

  • High-Speed Image Analysis on the Formation of Sub-Ligaments from the Bag Rim and their Breakup after the Bag Rupture
    金月 翔哉, 野尻 智輝, 宋 明良, 大島 逸平
    第30回微粒化シンポジウム2021, Dec. 2021, Japanese
    Oral presentation

  • 多噴孔ディーゼル燃料インジェクタの内部流動と噴霧角の可視化計測実験
    脇坂 優志, 宋 明良, 三輪 誠, 川口 幹祐, 松本 有平, 西田 恵哉, 中島 聖, 和田 好隆
    第30回微粒化シンポジウム2021, Dec. 2021, Japanese
    Oral presentation

  • Atomization and Deformation of a Planar Liquid Sheet by Cocurrent Air Flows (Estimation of Droplet Diameter Distribution Based on Spatial Distributions of Bag Thickness)
    野尻 智輝, 金月 翔哉, 大島 逸平, 宋 明良
    第30回微粒化シンポジウム2021, Dec. 2021, Japanese
    Oral presentation

  • Wave Loads on Offshore Cylindrical Structure with;a Disk-Shaped Column
    伊藤 樹里, 宋 明良
    日本船舶海洋工学会 令和３年秋季講演会2021 論文集, Nov. 2021, Japanese
    Oral presentation

  • Heave Response Prediction of Cylindrical Floating Structure with a Column in Regular Wave
    大川諒也, 宋 明良
    日本船舶海洋工学会 令和３年秋季講演会2021 論文集, Nov. 2021, Japanese
    Oral presentation

  • 舶用機関燃料インジェクター内キャビテーションの可視化実験と予測モデルの構築
    岡見 夏花, 木村 一貴, 宋 明良, 齊藤 俊之
    日本マリンエンジニアリング学会 第90回学術講演会2021, Sep. 2021, Japanese
    Oral presentation

  • 舶用機関燃料インジェクタ内キャビテーションの抑制提案と効果検証
    木村 一貴, 岡見 夏花, 宋 明良, 齋藤 俊之
    日本マリンエンジニアリング学会 第90回学術講演会2021, Sep. 2021, Japanese
    Oral presentation

  • 多噴孔ミニサックノズル内ストリングキャビテーションの支配無次元数
    脇坂優志, 中道勝久, 木村一至, 宋 明良, 三輪 誠, 川口幹祐, 松本有平, 西田恵哉, 中島 聖, 和田好隆
    第29回液体化シンポジウム, Dec. 2020, Japanese

  • インジェクタ寸法と噴孔数がミニサックノズル内ストリングキャビテーションに及ぼす影響（第29回微粒化シンポジウム優秀講演賞受賞）
    木村一至, 中道勝久, 脇坂優志, 宋 明良, 和田好隆, 植木義治, 横畑英明
    第29回液体化シンポジウム, Dec. 2020, Japanese
    Oral presentation

  • 自由表面近傍にコラムを有する円柱状浮体へ作用する流体力
    大川諒也, 宋 明良
    日本船舶海洋工学会令和２年秋季講演会, Nov. 2020, Japanese
    Oral presentation

  • 斜行気流による平面液膜の微粒化過程
    西山真悟, 大石一稀, 今井智貴, 宋 明良, 松浦一哲
    第28回微粒化シンポジウム2019, Dec. 2019, Japanese
    Oral presentation

  • 並行気流による平面液膜の微粒化過程（バッグ破断後の液糸の形成と分裂過程）
    今井智貴, 大石一稀, 西山真悟, 大島逸平, 宋 明良
    第28回微粒化シンポジウム2019, Dec. 2019, Japanese
    Oral presentation

  • 並行気流による平面液膜の微粒化過程（現象の可視化と噴霧粒径モデル）
    大島逸平, 宋 明良
    第28回微粒化シンポジウム2019, Dec. 2019, Japanese

  • 多噴孔燃料インジェクタ内４次元キャビテーション流動と噴霧挙動
    中道勝久, 脇坂優志, 奥中勇太, 三輪 誠, 宋 明良, 西田恵哉, 和田好隆, 植木義治, 横畑英明
    第28回微粒化シンポジウム2019, Dec. 2019, Japanese

  • ニードル弁運動に伴う燃料インジェクタ内非定常流動と液体噴流
    松上晃平, 三輪 誠, 宋 明良, 和田好隆, 植木義治, 横畑英明
    第28回微粒化シンポジウム2019, Dec. 2019, Japanese

  • コラムを有する浮体海洋構造物と規則波の相互作用
    石川妃奈子, 宋 明良
    日本船舶海洋工学会関西支部秋季講演会2019, Nov. 2019, Japanese
    Oral presentation

  • 側方気流を受ける液体噴流微粒化過程の画像解析
    西尾 茂, 宗村 宏晃, 林 博昭, 宋 明良, 西田 恵哉
    第47回可視化情報シンポジウム, Jul. 2019, Japanese

  • 燃料インジェクタ内における縦渦形成過程の分析
    西尾 茂, 中村 崚登, 岡 拓海, 宋 明良, 西田 恵哉
    第47回可視化情報シンポジウム, Jul. 2019, Japanese

  • 燃料インジェクタノズル内キャビテーション流れの数値計算モデル
    奥中勇太, 山本将貴, 宋 明良, 和田好隆, 植木義治, 横畑英明
    微粒化シンポジウム2018, Dec. 2018, Japanese, 日本液体微粒化学会, 東京, Domestic conference
    Oral presentation

  • ノズル内キャビテーション流れの局所液相速度と体積率のX 線計測
    西原安優実, 小谷和也, Rubby Prasetya, 三輪 誠, 宋 明良, Seoksu MOON, 和田好隆, 植木義治, 横畑英明
    微粒化シンポジウム2018, Dec. 2018, Japanese, 日本液体微粒化学会, 東京, Domestic conference
    Oral presentation

  • バラスト水中マイクロバブルと衝撃波の相互作用に関する数値解析
    中東駿斗, 宋 明良
    日本機械学会流体工学部門講演会2018, Nov. 2018, Japanese

  • 側方気流を受ける液体噴流の構造変化
    宗村宏晃, 西尾 茂, 宋 明良
    第46回可視化情報シンポジウム講演論文集, Sep. 2018, Japanese
    Oral presentation

  • 燃料インジェクター内におけるストリングキャビテーションの発生と3次元流場構造の分析
    中村崚登, 西尾 茂, 宋 明良
    第46回可視化情報シンポジウム講演論文集, Sep. 2018, Japanese
    Oral presentation

  • 非定常噴射過程におけるノズル内キャビテーション流れのX線高速度可視化計測
    小谷和也, Rubby Prasetya, MIWA TAKASHI, SOU AKIRA, 文 石洙, Raditya Hendra Pratama
    第26回微粒化シンポジウム2017, Dec. 2017, Japanese, 東京, Domestic conference
    Oral presentation

  • ノズル内キャビテーション乱流と液体噴流のハイブリッド数値解析
    山本将貴, 鷲見謙彰, SOU AKIRA, 和田好隆, 植木義治, 横畑英明
    第26回微粒化シンポジウム2017, Dec. 2017, Japanese, 東京, Domestic conference
    Oral presentation

  • スロッシングを伴うタンク内液相気化過程の可視化計測実験
    大江健, Helvines Corazon Aquino, SOU AKIRA
    日本船舶海洋工学会関西支部平成29年秋季講演会2017, Nov. 2017, Japanese, 日本船舶海洋工学会, 広島, Domestic conference
    Oral presentation

  • コラムを有する円柱状海洋構造物の波荷重
    Hirai Takayuki, 山中伸悟, SOU AKIRA, Nihei Yasunori
    日本船舶海洋工学会関西支部平成29年秋季講演会2017, Nov. 2017, Japanese, 日本船舶海洋工学会, 広島, Domestic conference
    Oral presentation

  • 微小気泡と衝撃波の相互作用に関する数値計算
    中東 駿斗, SOU AKIRA
    混相流シンポジウム2017, Aug. 2017, Japanese, 電気通信大学, Domestic conference
    Oral presentation

  • 燃料インジェクタ内ストリングキャビテーションの発生機構
    堀江 仁美, Prasetya Rubby, MIWA TAKASHI, SOU AKIRA
    混相流シンポジウム2017, Aug. 2017, Japanese, 電気通信大学, Domestic conference
    Oral presentation

  • 放射光による微小ノズル内キャビテーションの高速度撮影
    MIWA Takashi, Rubby Prasetya, Kasahara Takumi, SOU AKIRA, MOON Seoksu, Wada Yoshitaka, Yokohata Hideaki
    第25回微粒化シンポジウム2016, Dec. 2016, Japanese, 日本液体微粒化学会, 富山, Domestic conference
    Oral presentation

  • 並行気流による平面液膜の分裂過程（優秀講演賞受賞）
    KAWABATA Ryota, OSHIMA Ippei, Nishiyama Shingo, SOU AKIRA, MATSUURA Kazuaki
    第25回微粒化シンポジウム2016, Dec. 2016, Japanese, 日本液体微粒化学会, 富山, Domestic conference
    Oral presentation

  • 燃料インジェクタ内キャビテーション乱流の数値解析
    Isaka Fuminori, SOU AKIRA
    第25回微粒化シンポジウム2016, Dec. 2016, Japanese, 日本液体微粒化学会, 富山, Domestic conference
    Oral presentation

  • 気泡と気膜を伴うキャビテーション乱流の数値解析
    Washimi Kensho, SOU AKIRA
    第25回微粒化シンポジウム2016, Dec. 2016, Japanese, 日本液体微粒化学会, 富山, Domestic conference
    Oral presentation

  • 気液物性値とノズル形状が並行気流による平面液膜流の微粒化過程に及ぼす影響
    OSHIMA Ippei, KAWABATA Ryota, Nishiyama Shingo, SOU AKIRA, MATSUURA Kazuaki
    第25回微粒化シンポジウム2016, Dec. 2016, Japanese, 日本液体微粒化学会, 富山, Domestic conference
    Oral presentation

  • 液膜式気流微粒化研究委員会の活動概要
    SOU AKIRA, Inoue Tomohiro, Saitoh Hiroyasu, MATSUURA Kazuaki
    第25回微粒化シンポジウム2016, Dec. 2016, Japanese, 日本液体微粒化学会, 富山, Domestic conference
    Oral presentation

  • コラムを有する円柱状海洋構造物と波の相互作用
    Yamanaka Shingo, Hirai Takayuki, Kimura, Nihei Yasunori, SOU AKIRA
    日本船舶海洋工学会平成28年秋季講演会2016, Nov. 2016, Japanese, 日本船舶海洋工学会, 岡山, Domestic conference
    Oral presentation

  • 非定常噴射過程における燃料インジェクタ内キャビテーションと液体噴流
    Kasahara Takumi, Rubby Prasetya, SOU AKIRA, Wada Yoshitaka, Yokohata Hideaki
    混相流シンポジウム2016, Aug. 2016, Japanese, 日本混相流学会, 京都, Domestic conference
    Oral presentation

  • 矩形ノズル内キャビテーションの四次元構造
    Taniguchi Takuto, Rubby Prasetya, SOU AKIRA, Wada Yoshitaka, Yokohata Hideaki
    混相流シンポジウム2016, Aug. 2016, Japanese, 日本混相流学会, 京都, Domestic conference
    Oral presentation

  • Numerical Simulation of Interaction between Bubble and Shock Wave in Water
    FURUHATA Ryuki, TANIGUCHI Nao, SOU AKIRA, ABE Akihisa
    2015年度衝撃波シンポジウム, Mar. 2016, Japanese, Kumamoto, Domestic conference
    Oral presentation

  • Visualization Experiments of Planar Liquid Sheet Atomization by Air Flows
    OSHIMA Ippei, KAWABATA Ryota, SOU AKIRA, MATSUURA Kazuaki
    第24回微粒化シンポジウム2015, Dec. 2015, Japanese, Kobe, Domestic conference
    Oral presentation

  • X-Ray Visualization and Effects of Nozzle Size on Cavitation
    Minami Shinichiro, Raditya Hendra Pratama, Rubby Prasetya, SOU AKIRA, MIWA TAKASHI, MOON Seoksu
    第24回微粒化シンポジウム2015, Dec. 2015, Japanese, 神戸, Domestic conference
    Oral presentation

  • Numerical Simulation of Interaction between Wave and Offshore Structure
    Tanimoto Reika, Yamanaka Shingo, SOU AKIRA, Nihei Yasunori
    日本船舶海洋工学会平成27年秋季講演会2015, Nov. 2015, Japanese, 東京, Domestic conference
    Oral presentation

  • 水噴霧による過熱蒸気温度制御に関する研究
    平川 翔, SOU AKIRA
    第85回マリンエンジニアリング学術講演会2015, Oct. 2015, Japanese, 富山国際会議場, Domestic conference
    Oral presentation

  • 気流による液膜変形過程に及ぼす諸因子の影響
    大島逸平, SOU AKIRA
    微粒化シンポジウム2014, Dec. 2014, Japanese, 弘前, Domestic conference
    Oral presentation

  • ミニサックノズルの各種形状因子がキャビテーション流れに及ぼす影響
    南 慎一郎, Raditya Hendra Pratama, SOU AKIRA, 和田好隆, 横畑英明
    微粒化シンポジウム2014, Dec. 2014, Japanese, 弘前, Domestic conference
    Oral presentation

  • 燃料インジェクタ内キャビテーションの三次元構造
    田中彩娜, 西 風太, SOU AKIRA, 和田好隆, 横畑英明
    混相流シンポジウム2014, Aug. 2014, Japanese, 札幌, Domestic conference
    Oral presentation

  • 燃料インジェクタ内キャビテーションのハイブリッド解析モデル
    西 風太, 田中彩娜, SOU AKIRA, 和田好隆, 横畑英明
    混相流シンポジウム2014, Aug. 2014, Japanese, 札幌, Domestic conference
    Oral presentation

  • 入口R付ノズル内キャビテーションと液体噴流
    山田幸聖, 増田 誠, 宇澤あいか, SOU AKIRA
    混相流シンポジウム2014, Aug. 2014, Japanese, 札幌, Domestic conference
    Oral presentation

  • ミニサック型インジェクタ内流動の PIV解析とキャビテーション及び液体噴流
    中津 敏, 頴川徳秀, Raditya Hendra Pratama, SOU AKIRA, 和田好隆, 横畑英明
    混相流シンポジウム2014, Aug. 2014, Japanese, 札幌, Domestic conference
    Oral presentation

  • VOF 法に基づく圧縮性気液二相流の数値解析
    谷口 直, SOU AKIRA, 阿部晃久
    混相流シンポジウム2014, Jul. 2014, Japanese, 札幌, Domestic conference
    Oral presentation

  • Numerical Simulation of Fuel Film Deformation
    OSHIMA Ippei, SOU AKIRA
    第22回微粒化シンポジウム2013, Dec. 2013, Japanese, Nagasaki, Domestic conference
    Oral presentation

  • Numerical Simulation on Mixture Process of Urea-Water in Urea SCR
    HAYASHI Masayoshi, SOU AKIRA
    第22回微粒化シンポジウム, Dec. 2013, Japanese, Nagasaki, Domestic conference
    Oral presentation

  • Effects of Inlet Roundness on Cavitation in Fuel Injector Nozzle and Discharged Liquid Jet
    UZAWA Aika, KIBAYASHI Yusuke, SOU Akira
    24th Internal Combustion Engine Symposium 2013, Nov. 2013, Japanese, Kobe, Domestic conference
    Oral presentation

  • Effects of Inlet Corner Radius on Cavitation in an Injector Nozzle and Liquid Jet
    Yusuke Kibayashi, Aika Uzawa, SOU AKIRA, Nobuhisa Kakehashi, Kazufumi Serizawa
    自動車技術会2013年春季大会, May 2013, Japanese, Yokohama, Cavitation occurs in a nozzle of a fuel injector for a diesel engine, which promotes fuel spray atomization and may induce erosion. The radius R of an inlet edge curvature affects the characteristic of a cavitation flow in a nozzle as well as a injected liquid jet and spray. In order to clarify its effects, a high speed visualization of cavitation in a two-dimensional nozzle wi, Domestic conference
    Oral presentation

  • String Cavitation in an Injector
    SOU AKIRA, Raditya Hendra Pratama, KIBAYASHI Yusuke
    第21回微粒化シンポジウム2012, Dec. 2012, Japanese, 東京, Domestic conference
    Oral presentation

  • Detailed Simulation of Cavitation in an Injector
    FUKUDA Takumi, KINUGAWA Yusuke, SOU AKIRA
    第21回微粒化シンポジウム2012, Dec. 2012, Japanese, 東京, Domestic conference
    Oral presentation

  • 流体物性が燃料インジェクタ内キャビテーションと液体噴流に及ぼす影響
    KIBAYASHI Yusuke, Raditya Hendra Pratama, SOU Akira
    日本マリンエンジニアリング学会第82回マリンエンジニアリング学術講演会, Sep. 2012, Japanese, Takamatsu, Domestic conference
    Oral presentation

  • Accumulation and Removal of Marticulate Matters on Urea SCR Catalyst
    SOU Akira, HAMAOKA Shunji, FUKUI Yoshinori, KANDA Toshihisa, TAKAHATA Yasuyuki
    日本マリンエンジニアリング学会第82回マリンエンジニアリング学術講演会, Sep. 2012, Japanese, Takamatsu, Domestic conference
    Oral presentation

  • Cavitation in Fuel Injector Nozzles and Liquid Jet
    SUGIMURA Ryohei, Raditya Hendra Pratama, OHASHI Ryota, TOMISAKA Tsuyoshi, SOU Akira
    Twentieth, Dec. 2011, Japanese, Hiroshima, Domestic conference
    Oral presentation

  • Bubble Dynamics Model for Predicting Cavitation in a Nozzle
    KINUGAWA Yusuke, KINUGASA Tomoyuki, SOU Akira
    Twentieth Symposium (ILASS-Japan) on Atomization, Dec. 2011, Japanese, Hiroshima, Domestic conference
    Oral presentation

  • Fundamental Research on Method of Creating Underwater Shock Waves
    Sugahara Kazuya, Miychi Akihiro, ABE AKIHISA, SOU AKIRA, NISHIO SHIGERU
    日本船舶海洋工学会／関西支部平成２３年秋季講演会, Nov. 2011, Japanese, 神戸市産業振興センター, Domestic conference
    Others

  • Cavitation in Fuel Injector and Liquid Jet
    TOMISAKA Tsuyoshi, OHASHI Ryota, SUGIMURA Ryohei, SOU Akira
    JSMF Annual Meeting 2011, Aug. 2011, Japanese, Kyoto, Domestic conference
    Oral presentation

  • Bubble Dynamics Models for Diesel Fuel Injector
    KINUGASA Tomoyuki, KINUGAWA Yusuke, SOU Akira
    The Japan Institute of Marine Engineering 81st Annual Meeting, May 2011, Japanese, Tokyo, Domestic conference
    Oral presentation

  • Cavitation in Injectors and Liquid Jets
    SOU Akira, SUGIMURA Ryohei, OHASHI Ryota
    Soceiety of Automotive Engineers of Japan Annual Congress (Spring) 2011, May 2011, Japanese, 自動車技術会, Yokohama, Domestic conference
    Oral presentation

  • Cavitation in a Nozzle with Asymmetric Inflow and a Liquid Jet
    SOU Akira, OHASHI Ryota, SUGIMURA Ryohei, SHIMODA Soichi, TAKANO Satoshi
    Nineteenth Symposium (ILASS-Japan) on Atomization, Dec. 2010, Japanese, 日本液体微粒化学会, Tokyo, Domestic conference
    Oral presentation

  • Cavitation in an Injector Nozzle and a Liquid Jet
    SHIMODA Soichi, OHASHI Ryota, SUGIMURA Ryohei, TAKANO Satoshi, SOU Akira
    15th Symposium on Cavitation, Nov. 2010, Japanese, 日本学術会議機械工学委員会, Osaka, Domestic conference
    Oral presentation

  • 衝撃圧を利用するバラスト水処理技術に関する基礎研究
    ABE AKIHISA, WAN BIYU, MIMURA HARUO, NISHIO SHIGERU, Sou Akira
    第80回マリンエンジニアリング学術講演会, Sep. 2010, Japanese, 新潟朱鷺メッセ, Domestic conference
    Oral presentation

  • 圧力噴射弁の非対称ノズル内キャビテーション
    SOU Akira, SUGIMURA Ryohei, OHASHI Ryota, Raditya Hendra Pratama
    日本マリンエンジニアリング学会第80回ME学術講演会, Aug. 2010, Japanese, 日本マリンエンジニアリング学会, Niigata, Domestic conference
    Oral presentation

  • Oil-Spill Simulation using Atmosphere-Ocean General Circulation Model
    Young Jin CHOI, Akihisa Abe, Shigeru Nishio, Akira Sou
    日本船舶海洋工学会春季講演会, Jun. 2010, Japanese, タワーホール船堀, Domestic conference
    Oral presentation

  • Development of Ballast Water Treatment Technology using Underwater Shock Wave Focusing and Microbubbles: 2nd Report
    Wan Biyu, Akihisa Abe, Haruo Mimura, Shigeru Nishio, Akira Sou, Nobuhito Tsujii, Shinya Fukuda
    日本船舶海洋工学会, May 2010, Japanese, 東京船堀, Domestic conference
    Oral presentation

  • Deposition of Particulate Matter in Diesel Exhaust Gas on SCR Catalyst Carrier
    AWATA Kazuki, SOU Akira
    日本機械学会関西支部2009年度関西学生会卒業研究発表講演会, Mar. 2010, Japanese, Kobe, Domestic conference
    Oral presentation

  • Visualization of Cavitation in a VCO Nozzle and Liquid Jet
    OHASHI Ryota, SUGIMURA Ryohei, SOU Akira
    日本機械学会関西支部2009年度関西学生会卒業研究発表講演会, Mar. 2010, Japanese, Kobe, Domestic conference
    Oral presentation

  • Large Eddy Simulation of Cavitating Turbulent Flow in a Nozzle
    GOSHIMA Daisuke, SOU Akira, HAYASHI Kosuke, TOMIYAMA Akio
    18th Symposium on Atomization (ILASS-Japan), Dec. 2009, Japanese, 日本液体微粒化学会, Kyushu University, Domestic conference
    Oral presentation

  • Development of Ballast Water Treatment Technology using Underwater Shock Wave Focusing and Microbubbles
    Abe Akihisa, Biyu Wan, Mimura Haruo, Nishio Shigeru, Sou Akira, Tsujii Nobuhito, Fukuda Shinya
    平成２１年日本船舶海洋工学会関西支部秋季講演会, Nov. 2009, Japanese, 大阪大学コンベンションセンター, Domestic conference
    Others

  • Development of Oil-Spill Simulation System based on the Global Ocean General Circulation Model
    Young Jin CHOI, Akihisa Abe, Shigeru Nishio, Akira Sou
    日本船舶海洋工学会秋季講演会, Nov. 2009, Japanese, 大阪大学コンベンションセンター, Domestic conference
    Oral presentation

  • Cavitating Flow in a Nozzle of a Pressure Atomizer
    GOSHIMA Daisuke, SOU Akira, HOSOKAWA Shigeo, TOMIYAMA Akio
    JSMF Annual Meeting 2009, Aug. 2009, Japanese, 日本混相流学会, Kumamoto, Domestic conference
    Oral presentation

  • Effect of Nozzle Length on Cavitation in a Nozzle and a Liquid Jet
    ISOZAKI Kenji, SOU Akira, HOSOKAWA Shigeo, TOMIYAMA Akio
    17th Symposium on Atomization, Dec. 2008, Japanese, 日本液体微粒化学会, Yokohama, Domestic conference
    Oral presentation

  • Gas-Liquid Two-Phase Flow in a Rod Bundle with Partial Length Rods
    MIZUTANI Yoshitaka, HOSOKAWA Shigeo, SOU Akira, TOMIYAMA Akio
    日本混相流学会年会講演会2008, Aug. 2008, Japanese, 会津, Domestic conference
    Oral presentation

  • Numerical Simulation of Bubble Coalescence in Bubbly Flows
    KANG Hyungha, SOU Akira, TOMIYAMA Akio
    混相流学会年会講演会2008, Aug. 2008, Japanese, 会津, Domestic conference
    Oral presentation

  • Cavitation in Nozzles and Mechanism of Atomization Enhancement
    SOU Akira
    第16回微粒化シンポジウム, Dec. 2007, Japanese, Osaka, Domestic conference
    Public symposium

  • Dimensionless Index for Cavitation in Nozzles of Various Geometries
    Muhammad Ilham Maulana, ISOZAKI Kenji, SOU Akira, HOSOKAWA Shigeo, TOMIYAMA Akio
    第16回微粒化シンポジウム, Dec. 2007, English, Osaka, Domestic conference
    Oral presentation

  • Effects of nozzle shape and size on cavitation and liquid jet atomization
    SOU Akira, Muhammad Ilham Maulana, ISOZAKI Kenji, HOSOKAWA Shigeo, TOMIYAMA Akio
    JSMF Annual Meeting 2007, Jun. 2007, Japanese, 日本混相流学会, Sapporo, Domestic conference
    Oral presentation

  • Research on Hyper ABWR Plants of Extended Core Power Density: Experimental Study on Characteristics of Two-Phase Flow in a Steam Separator
    KATAOKA Hironobu, NISHIWAKI Daisuke, TOMIYAMA Akio, HOSOKAWA Shigeo, SOU Akira, CHAKI Masao
    2007 Annual Meeting of AESJ, Mar. 2007, Japanese, 日本原子力学会, Nagoya, Domestic conference
    Oral presentation

  • Multi-Fluid Simulation of Turbulent Bubbly Pipe Flows
    HASHIMOTO Shohei, HOSOKAWA Shigeo, TOMIYAMA Akio, SOU Akira
    日本機械学会関西支部第82期定時総会講演会, Mar. 2007, Japanese, 日本機械学会, Osaka, Domestic conference
    Oral presentation

  • Research on Hyper ABWR Plants of Extended Core Power Density (7) Experimental Study on Characteristics of Two-Phase Flow in a Steam Separator
    KATAOKA Hironobu, NISHIWAKI Daisuke, TOMIYAMA Akio, HOSOKAWA Shigeo, SOU Akira, CHAKI Masao
    2006 Fall Meeting of AESJ, Oct. 2006, Japanese, 日本原子力学会, Hokkaido, Domestic conference
    Oral presentation

  • Mechanism of Liquid Jet Atomization by Cavitation in a Nozzle
    SOU Akira, HOSOKAWA Shigeo, TOMIYAMA Akio
    オーガナイズド混相流フォーラム(OMF2006), Oct. 2006, Japanese, Miyagi, Domestic conference
    [Invited]
    Invited oral presentation

  • Effects of Cavitation in 2D Nozzle on Liquid Jet Atomization
    MAEDA Tatsutoshi, Maulana Muhammad Ilham, SOU Akira, HOSOKAWA Shigeo, TOMIYAMA Akio
    JSMF Annual Meeting 2006, Aug. 2006, Japanese, 日本混相流学会, Kanazawa, Domestic conference
    Oral presentation

  • Numerical Simulation of Heterogeneous Bubbly Flow in a Bubble Column
    KINOSHITA Kouji, MAEKAWA Munenori, SHIMADA Naoki, SOU Akira, TOMIYAMA Akio
    JSMF Annual Meeting 2006, Aug. 2006, Japanese, 日本混相流学会, Kanazawa, Domestic conference
    Oral presentation

  • Bubble Dissolution of CO2-Water Two-Phase Bubbly Flow in a Vertical Pipe
    NOZAWA Satoshi, ABE Satoru, HOSOKAWA Shigeo, SOU Akira, TOMIYAMA Akio
    JSMF Annual Meeting 2006, Aug. 2006, Japanese, Kanazawa, Domestic conference
    Oral presentation

  • Verification of Numerical Method for a Flow with Density Distribution
    SOU Akira, MAEDA Akiyoshi, HOSOKAWA Shigeo, TOMIYAMA Akio
    34th Symposium on Visualization, Jul. 2006, Japanese, 可視化情報学会, Tokyo, Domestic conference
    Oral presentation

  • Influence of Ambient Gas Density on Unsteady Spray Injected from a Swirl Injector
    HOSOKAWA Shigeo, SOU Akira, Muhammad Ilham Maulana, TOMIYAMA Akio
    34th Symposium on Visualization, Jul. 2006, Japanese, 可視化情報学会, Tokyo, Domestic conference
    Oral presentation

  • 静電誘導型マイクロインクジェットの数値解析
    SOU Akira
    高分子学会高分子エレクトロニクス研究会, Jun. 2006, Japanese, 高分子学会, Tokyo, Domestic conference
    [Invited]
    Invited oral presentation

  • Effect of Surrounding Gas Density on Spray Characteristics of Swirl Injector
    NOMURA Ryosuke, SOU Akira, HOSOKAWA Shigeo, TOMIYAMA Akio
    日本機械学会流体工学部門講演会, Oct. 2005, Japanese, 金沢, Domestic conference
    Oral presentation

  • Effects of Turbulent Cavitation Flow in a Two-Dimensional Nozzle on Liquid Atomization
    SOU Akira, NIGORIKAWA Shinji, MAEDA Tatsutoshi, TOMIYAMA Akio, HOSOKAWA Shigeo
    日本混相流学会年会講演会2005, Aug. 2005, Japanese, 東京, Domestic conference
    Oral presentation

  • Development of a Hybrid Method for Dispersed Multi-Phase Flows
    SAKODA Kenichi, SOU Akira, TOMIYAMA Akio
    日本混相流学会年会講演会2005, Aug. 2005, Japanese, 東京, Domestic conference
    Oral presentation

  • Numerical Simulation of Heterogeneous Bubbly Flow in a Bubble Column
    MAEKAWA Munenori, KAKUZAWA Masahiro, KINOSHITA Kouji, SOU Akira, TOMIYAMA Akio
    日本混相流学会年会講演会2005, Aug. 2005, Japanese, 東京, Domestic conference
    Oral presentation

  • Gas-Liquid Two-Phase Flow Pattern in a Rod Bundle
    MIZUTANI Yoshitaka, TSUBO Yasushi, MISHIMA Kaichiro, KUDO Yoshiro, SOU Akira, HOSOKAWA Shigeo, TOMIYAMA Akio
    日本混相流学会年会講演会2005, Aug. 2005, Japanese, 東京, Domestic conference
    Oral presentation

  • ノズル内キャビテーション流れの可視化とLDV計測
    宋 明良, 濁川 慎司, 冨山 明男, 細川 茂雄, 松本 洋一郎
    第13回微粒化シンポジウム, Dec. 2004, Japanese, 日本液体微粒化学会, 東京, Domestic conference
    Oral presentation

  • Numerical Simulation of Cavitation in a Nozzle and Liquid Jet Atomization Process
    SOU Akira
    次世代ゼロエミッション・エネルギー変換システム・噴霧燃焼講演会, Sep. 2004, Japanese, Doshisha University, Domestic conference
    [Invited]
    Invited oral presentation

  • 二酸化炭素－水系鉛直管内気泡流に関する研究
    嶋 敏秀, 白井 正貴, 冨山 明男, 細川 茂雄, 宋 明良
    日本混相流学会年会講演会, 2004, Japanese, 日本混相流学会, 岡山大学, Domestic conference
    Oral presentation

  • 神戸大学における学生フォーミュラへの取り組み
    西本 幸司, 宋 明良
    日本機械学会関西支部第5回秋季技術交流フォーラム, 2004, Japanese, 日本機械学会関西支部, 未記入, Domestic conference
    Oral presentation

  • 改良SCA法による液体粒子の界面追跡計算
    林 公祐, Win Myint, 宋 明良, 冨山 明男
    日本混相流学会年会講演会, 2004, Japanese, 日本混相流学会, 岡山大学, Domestic conference
    Oral presentation

  • インジェクタのノズル内キャビテーションと液体噴流の可視化
    濁川 慎司, 宋 明良, 冨山 明男, 細川 茂雄, 松本 洋一郎
    日本混相流学会年会講演会, 2004, Japanese, 日本混相流学会, 岡山大学, Domestic conference
    Oral presentation

  • Terminal Velocities of Single Drops rising through Stagnant Liquids
    Win Myint, MATSUMOTO Daisuke, SOU Akira, HOSOKAWA Shigeo, TOMIYAMA Akio
    日本混相流学会年会講演会, 2004, English, 日本混相流学会, 岡山大学, International conference
    Oral presentation

  • 微粒化ノズル内キャビテーション流れと液体噴流の微粒化
    宋 明良, 林 公祐, 新田 真一, 冨山 明男
    日本混相流学会年会講演会, 2003, Japanese, 日本混相流学会, 大阪大学, Domestic conference
    Oral presentation

  • 気泡追跡法による気泡揺動運動予測の試み
    迫田 健一, 宋 明良, 冨山 明男
    日本混相流学会年会講演会, 2003, Japanese, 日本混相流学会, 大阪大学, Domestic conference
    Oral presentation

  • 簡素化界面再構築法に基づく界面追跡法
    宋 明良, 林 公祐, 冨山 明男
    日本機械学会第16回計算力学講演会, 2003, Japanese, 日本機械学会計算力学部門, 神戸大学工学部, Domestic conference
    Oral presentation

  • 界面追跡法による気液二相流数値予測の試み
    林 公祐, 宋 明良, 冨山 明男
    産学官技術フォーラム’03, 2003, Japanese, 神戸市立工業高等専門学校, 神戸商工会議所, 神戸市産業振興センター, Domestic conference
    Poster presentation

  • 鉛直流路内気泡の上昇速度に関する研究
    三橋 真人, 冨山 明男, 細川 茂男, 宋 明良
    日本混相流学会年会講演会, 2003, Japanese, 日本混相流学会, 大阪大学, Domestic conference
    Oral presentation

  • 液滴・噴霧燃焼の数値シミュレーション
    宋 明良, 林 公祐, 國本 雅也, 冨山 明男
    日本混相流学会年会講演会, 2003, Japanese, 日本混相流学会, 大阪大学, Domestic conference
    Oral presentation

  • カセグレン光学系による層流拡散火炎基部の自発光計測
    橋本 英樹, 斎藤 潤一, 宋 明良, 冨山 明男
    第41回燃焼シンポジウム, 2003, Japanese, 日本燃焼学会, つくば市, Domestic conference
    Oral presentation

  • Numerical Analysis of Droplet Behavior with Various Sizes Near the Laminar Premix Flame
    SOU Akira, KUNIMOTO Masaya, NAKAJIMA Tsuyoshi
    第17回日本燃焼学会／JFRC合同研究会, Dec. 2002, Japanese, Domestic conference
    Oral presentation

  • Interaction between Fuel Droplets and Flame near the Flame Front of Laminar Spray Combustion
    SOU Akira, KUNIMOTO Masaya, NAKAJIMA Tsuyoshi
    第40回燃焼シンポジウム, Dec. 2002, Japanese, Domestic conference
    Oral presentation

  • Numerical Analysis of Liquid Jet Deformation and Atomization Promoted by the Turbulence in a Nozzle
    SOU Akira, NITTA Shinichi, NAKAJIMA Tsuyoshi
    第11回微粒化シンポジウム, Dec. 2002, Japanese, Domestic conference
    Oral presentation

  • 高温高圧下におけるメタン空気予混合気のレーザー着火に関する数値解析
    YOKOYAMA Hiroki, SOU Akira, NAKAJIMA Tsuyoshi
    日本機械学会関西支部関西学生会卒業研究発表講演会, Mar. 2002, Japanese, Domestic conference
    Oral presentation

  • 界面追跡法の改良（新しい界面移流スキームの提案）
    HAYASHI Kosuke, SOU Akira, NAKAJIMA Tsuyoshi
    日本機械学会関西支部関西学生会卒業研究発表講演会, Mar. 2002, Japanese, 神戸, Domestic conference
    Oral presentation

  • グラフ理論による分岐・合流などを持つトンネル内の換気解析
    SOU Akira
    日本機械学会関西支部第77期定時総会講演会, Mar. 2002, Japanese, Domestic conference
    Oral presentation

  • Numerical Analysis of Cavitating Flow in a Nozzle
    SOU Akira, NITTA Shinichi, NAKAJIMA Tsuyoshi
    第10回微粒化シンポジウム, Dec. 2001, Japanese, Domestic conference
    Oral presentation

  • Numerical Analysis on Combustion Behavior of a Deformable Droplet
    SOU Akira, TAGAWA Toyoshige, NAKAJIMA Tsuyoshi
    第39回燃焼シンポジウム, Nov. 2001, Japanese, Domestic conference
    Oral presentation

  • Effects of Ink Viscosity and Electric Field on the Characteristics of an Electrostatic Ink Jet Printer
    SOU Akira, KITAO Masahiro, SASAI Kosuke, NAKAJIMA Tsuyoshi
    日本機械学会関西支部第76期定時総会講演会, Mar. 2001, Japanese, 大阪, Domestic conference
    Oral presentation

  • 自由液面を有するインク薄層のクーロン力による変形に関する応用研究
    SASAI Kosuke, SOU Akira, KITAO Masahiro, 泉 倫生, NAKAJIMA Tsuyoshi
    Japan Hardcopy 2000 Fall Meeting, Dec. 2000, Japanese, Domestic conference
    Oral presentation

  • Numerical Analysis of Cavitation Induced Turbulence in Spray Nozzle
    SOU Akira, MASAKI Yoichi, NAKAJIMA Tsuyoshi
    第9回微粒化シンポジウム, Dec. 2000, Japanese, 筑波, Domestic conference
    Oral presentation

  • 非定常サブチャンネル解析コードNASCAの開発・改良(2)コード内容とスペーサ効果
    SOU Akira, 有冨 正憲, 三島 嘉一郎, 二ノ方 壽, 藪下 幸久, 原 貴
    日本機械学会2000年度年次大会, Aug. 2000, Japanese, 名古屋, Domestic conference
    Oral presentation

  • NASCAのポスト沸騰遷移への適用性研究(4)コード内容とスペーサ効果
    SOU Akira, 有冨 正憲, 藪下 幸久, 原 貴
    日本原子力学会2000年春の年会, Mar. 2000, Japanese, 愛媛, Domestic conference
    Oral presentation

  • 界面追跡法による液体噴流の数値解析
    SOU AKIRA, 長谷川永, 中島 健
    第8回微粒化シンポジウム, Dec. 1999, Japanese, Domestic conference
    Oral presentation

  • サブチャンネル解析コードによるガイゼリングの数値シミュレーション
    SOU Akira, YABUSHITA Yukihisa
    日本機械学会第11回計算力学講演会, Nov. 1998, Japanese, 大阪, Domestic conference
    Oral presentation

  • 粒子追跡法による鉛直管内気泡流の数値解析
    冨山明男, SOU AKIRA, 坂口忠司
    混相流シンポジウム'95, Jul. 1995, Japanese, 松山, Domestic conference
    Oral presentation

  • 気泡が壁面熱伝達に及ぼす影響に関する数値計算
    冨山明男, 大島恭史, SOU AKIRA, 坂口忠司
    混相流シンポジウム'95, Jul. 1995, Japanese, 松山, Domestic conference
    Oral presentation

  • 垂直管内気泡流のボイド分布予測
    冨山明男, SOU AKIRA, 河南暢剛, 坂口忠司
    日本機械学会九州支部北九州地方講演会, Nov. 1994, Japanese, 北九州, Domestic conference
    Oral presentation

  • 気泡の挙動に関するシミュレーション
    冨山明男, SOU AKIRA, 坂口忠司, 吉川秀雄
    日本学術会議シンポジウム「C.G.で見る流れの世界」, Jul. 1994, Japanese, 東京, Domestic conference
    Oral presentation

  • ダクト内流れ中単一気泡の運動に及ぼす各種無次元数の影響
    冨山明男, SOU AKIRA, 遠山 巧, 坂口忠司
    混相流シンポジウム'94, Jul. 1994, Japanese, 筑波, Domestic conference
    Oral presentation

  • ダクト内気泡流の三次元詳細解析
    冨山明男, SOU AKIRA, 吉川秀雄, 坂口忠司
    日本機械学会熱工学講演会, Nov. 1993, Japanese, 東京, Domestic conference
    Oral presentation

  • 静止液中管内単一大気泡の形状と上昇速度
    冨山明男, SOU AKIRA, 坂口忠司
    混相流シンポジウム'93, Jul. 1993, Japanese, 福岡, Domestic conference
    Oral presentation

  • 管内気泡流の詳細解析
    冨山明男, SOU AKIRA, 坂口忠司
    日本機械学会第70期通常総会講演会, Mar. 1993, Japanese, 八王子, Domestic conference
    Oral presentation

  • 揺動気泡の数値解析
    冨山明男, SOU AKIRA, 坂口忠司
    混相流シンポジウム'92, Jul. 1992, Japanese, 仙台, Domestic conference
    Oral presentation

  • VOF法の気泡解析に対する適用性の検討
    冨山明男, SOU AKIRA, 坂口忠司
    第29回日本伝熱シンポジウム, May 1992, Japanese, Domestic conference
    Oral presentation

  • 垂列二気泡の干渉に関するシミュレーション
    冨山明男, SOU AKIRA, 南川久人, 藪下幸久, 坂口忠司
    日本機械学会関西支部講演会1991, Mar. 1992, Japanese, Domestic conference
    Oral presentation

  • VOF法による気泡挙動の解析
    冨山明男, SOU AKIRA, 松井 幹, 坂口忠司
    日本機械学会流体工学部門講演会1991, Aug. 1991, Japanese, 岡山, Domestic conference
    Oral presentation

  • 単一気泡の形状に関する数値計算
    冨山明男, SOU AKIRA, 南川久人, 坂口忠司
    混相流シンポジウム'90, Jul. 1990, Japanese, 名古屋, Domestic conference
    Oral presentation

■ Affiliated Academic Society
  • JAPAN WIND ENERGY ASSOCIATION

  • 自動車技術会

  • 日本伝熱学会

  • 日本原子力学会

  • 日本船舶海洋工学会

  • 日本マリンエンジニアリング学会

  • 日本液体微粒化学会

  • 日本混相流学会

  • 日本機械学会

■ Research Themes
  • Ignition evaluation and wall heat loss reduction method for promoting the use of petroleum blended alternative fuels
    Takagi Masahide, Ogata Yoichi, Sou Akira, Kawahara Nobuyuki, Imai Yasuo
    Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (A), Grant-in-Aid for Scientific Research (A), National Institute of Maritime, Port and Aviation Technology, Apr. 2025 - Mar. 2029

  • 舶用機器内キャビテーション・エロージョンに関する研究
    一般財団法人笹村工学奨励会, 研究助成, Apr. 2020 - Mar. 2022, Principal investigator

  • 拡大ノズルを用いた噴霧挙動解明
    May 2020 - Mar. 2021, Principal investigator

  • キャビテーション予測技術の開発研究
    May 2020 - Mar. 2021

  • 時間分解的X線イメージングによるキャビテーション動力学の検討
    共同研究, 2020 - 2021, Principal investigator

  • キャビテーション予測技術の開発研究
    共同型協力研究, Apr. 2019 - Mar. 2020, Principal investigator

  • 拡大ノズルを用いた噴霧挙動解明
    共同型協力研究, Apr. 2018 - Mar. 2019, Principal investigator

  • ノズル内部と近傍流動の連携解析に関する研究
    共同型協力研究, Apr. 2018 - Mar. 2019, Principal investigator

  • キャビテーション予測技術の開発研究
    共同型協力研究, Apr. 2018 - Mar. 2019, Principal investigator

  • キャビテーション予測技術の開発研究
    Dec. 2016 - Dec. 2018, Principal investigator

  • 拡大ノズルを用いた噴霧挙動解明
    共同型協力研究, Jun. 2017 - Mar. 2018, Principal investigator

  • ノズル内部と近傍流動の連携解析に関する研究
    共同型協力研究, Apr. 2017 - Mar. 2018, Principal investigator

  • ノズル内部キャビテーションの形成メカニズム解明
    共同型協力研究, Oct. 2016 - Mar. 2017, Principal investigator

  • 拡大ノズルを用いた噴霧挙動解明
    共同型協力研究, Apr. 2016 - Mar. 2017, Principal investigator

  • キャビテーション予測技術の開発研究
    共同型協力研究, Dec. 2015 - Dec. 2016, Principal investigator

  • 拡大ノズルを用いた噴霧挙動解明
    共同型協力研究, Jan. 2016 - Mar. 2016, Principal investigator

  • 先進計測技法を用いたノズル内部流動の詳細解析
    共同型協力研究, Aug. 2015 - Mar. 2016, Principal investigator

  • キャビテーション予測技術の開発研究
    共同型協力研究, Dec. 2014 - Nov. 2015, Principal investigator

  • スプレーノズルの微粒化過程に関する研究
    共同型協力研究, Oct. 2014 - Oct. 2015, Principal investigator

  • 配管内水噴霧挙動に関する研究
    共同型協力研究, Dec. 2013 - Oct. 2015, Principal investigator

  • X線計測技術及び可視化ノズルを用いたノズル内部キャビテーション現象の解明
    共同型協力研究, Nov. 2014 - Mar. 2015, Principal investigator

  • キャビテーション予測技術の開発研究
    共同型協力研究, Apr. 2013 - Mar. 2014, Principal investigator

  • ディーゼルエンジンの排気浄化技術の改良に関する研究
    共同型協力研究, May 2012 - Mar. 2013, Principal investigator

  • キャビテーション予測技術の開発研究
    共同型協力研究, Apr. 2012 - Mar. 2013, Principal investigator

  • ディーゼルエンジンの排気浄化技術の改良に関する研究
    共同型協力研究, Apr. 2011 - Mar. 2012, Principal investigator

  • キャビテーション予測技術の開発研究
    共同型協力研究, Apr. 2011 - Mar. 2012, Principal investigator

  • ディーゼルエンジンの排気浄化技術に関する研究
    共同型協力研究, Apr. 2010 - Mar. 2011, Principal investigator

  • キャビテーション予測技術の開発研究
    共同型協力研究, Apr. 2010 - Mar. 2011, Principal investigator

  • ディーゼルエンジンの排気浄化に関する研究
    共同型協力研究, Apr. 2009 - Mar. 2010, Principal investigator

  • 阿部 晃久
    科学研究費補助金／基盤研究(B), 2010
    Competitive research funding

  • 宋 明良
    科学研究費補助金／基盤研究(C), 2008, Principal investigator
    Competitive research funding

  • スワールインジェクタの噴霧特性に関する研究
    共同型協力研究, Apr. 2005 - Mar. 2007, Principal investigator

  • 低噴射圧マイクロ・ミスト生成ノズルの開発
    共同型協力研究, Apr. 2005 - Mar. 2006, Principal investigator

  • 宋 明良
    科学研究費補助金／基盤研究(C), 2006, Principal investigator
    Competitive research funding

  • 冨山 明男
    科学研究費補助金／基盤研究(A), 2006
    Competitive research funding

  • 低圧噴射による小粒径ミスト生成に関する研究
    共同型協力研究, Apr. 2004 - Mar. 2005, Principal investigator

  • 宋 明良
    科学研究費補助金／若手研究(B), 2005, Principal investigator
    Competitive research funding

  • 分岐合流をもつトンネルシミュレータの開発
    兵庫県, 平成12年度兵庫県中小企業研究開発促進事業共同研究, Jul. 2000 - Mar. 2001, Principal investigator

  • 乾式キャスク貯蔵システムしゃへい庫の除熱特性に関する数値解析
    Apr. 2000 - Mar. 2001, Principal investigator

  • 噴霧潤滑用霧化機構に関する研究
    共同研究, Apr. 1999 - Mar. 2001

  • 自由液面を有した薄層流れ場の特性に関する応用研究
    共同研究, Apr. 1999 - Mar. 2000, Principal investigator

■ Industrial Property Rights
  • 液体噴射装置
    宋明良
    特願000, 特開000, 特表000, 特許000
    Patent right

■ Social Contribution Activities
  • Japanese Red Cross Society
    日本赤十字社
    Others, 01 Apr. 1995 - Present

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