Research activity information

• Aug. 2023 日本混相流学会, 日本混相流学会学会賞 論文賞, 鉛直管におけるフラッディング状態での管内流動特性

  高木俊弥, 村瀬道雄, 栗本遼, 林公祐, 冨山明男


• Aug. 2018 日本混相流学会, 日本混相流学会学会賞 奨励賞, マイクロチャネル内気液二相スラグ流に関する研究

  栗本 遼

  Japan society


• Apr. 2012 KOBE UNIVERSITY, OUTSTANDING STUDENT AWARD

  KURIMOTO Ryo

  Others


• Mar. 2011 神戸大学機械クラブ, 機械クラブ国際活動奨励賞

  栗本 遼

  Others


• Mar. 2011 日本機械学会, 日本機械学会三浦賞

  栗本 遼

  Others

• Pressure drop and bubble velocity in Taylor flow through square microchannel

  Ryo Kurimoto, Kosuke Hayashi, Akio Tomiyama

  Abstract Interface tracking simulations of gas–liquid Taylor flow in horizontal square microchannels were carried out to understand the relation between the pressure drop in the bubble part and the curvatures at the nose and tail of a bubble. Numerical conditions ranged for 0.00159 ≤ Ca_T ≤ 0.0989, 0.0817 ≤ We_T ≤ 25.4, and 8.33 ≤ Re_T ≤ 791, where Ca_T, We_T, and Re_T are the capillary, Weber, and Reynolds numbers based on the total volumetric flux. The dimensionless pressure drop in the bubble part increased with increasing the capillary number and the Weber number. The curvature at the nose of a bubble increased and that at the tail of a bubble decreased as the capillary number increased. The variation of the curvature at the tail of a bubble was more remarkable than that at the nose of a bubble due to the increase in the Weber number, which was the main cause of large pressure drop in the bubble part at the same capillary number. The relation between the bubble velocity and the total volumetric flux was also discussed. The distribution parameter of the drift-flux model without inertial effects showed a simple relation with the capillary number. A correlation of the distribution parameter, which is expressed in terms of the capillary number and the Weber number, was developed and was confirmed to give good predictions of the bubble velocity.

  Springer Science and Business Media LLC, Jul. 2024, Microfluidics and Nanofluidics, 28, 58

  [Refereed]

  Scientific journal


• Shapes and terminal velocities of single bubbles rising through fiber bundle in stagnant water

  Ryo Kurimoto, Roberta Fátima Neumeister, Ryuya Komine, Gherhardt Ribatski, Kosuke Hayashi

  Elsevier BV, Jul. 2024, Chemical Engineering Science, 299, 120557

  [Refereed]

  Scientific journal


• Surface coverage ratio of contaminated Taylor bubbles in a square microchannel

  Takumi Mori, Ryota Igarashi, Kosuke Hayashi, Ryo Kurimoto, Akio Tomiyama

  Elsevier BV, Apr. 2024, Chemical Engineering Research and Design, 204, 343 - 353

  [Refereed]

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• Effects of pipe diameter on interfacial and wall friction factors of swirling annular flows in a vertical pipe

  Ryoya Koto, Ryo Kurimoto, Kosuke Hayashi, Akio Tomiyama

  Corresponding, Begell House, 2024, Multiphase Science and Technology, 36(2) (2), 55 - 73

  [Refereed]

  Scientific journal


• Bubbly flows in a column with submerged hollow fiber membranes

  Ryo Kurimoto, Shin Takaya, Kosuke Hayashi, Akio Tomiyama

  Elsevier BV, Dec. 2023, Chemical Engineering Research and Design, 200, 776 - 785

  [Refereed]

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• Gas-liquid Interfacial Friction Factor under Flooding Conditions in Vertical Pipes

  Toshiya TAKAKI, Masaki YAMASHITA, Ryo KURIMOTO, Kosuke HAYASHI, Michio MURASE, Akio TOMIYAMA

  The Japanese Society for Multiphase Flow, Nov. 2023, JAPANESE JOURNAL OF MULTIPHASE FLOW, 37(4) (4), 401 - 411

  [Refereed]

  Scientific journal


• Drag coefficients of particle-covered bubbles produced using a microchannel

  Kosuke Hayashi, Koya Chujo, Ryo Kurimoto, Akio Tomiyama

  Nov. 2023, 12th International Symposium on Measurement Techniques for Multiphase Flow

  [Refereed]


• Measurements of surfactant amount at the gas-liquid interface in comtaminated Taylor flows in a microchannel

  Takumi Mori, Ryota Igarashi, Kosuke Hayashi, Ryo Kurimoto, Akio Tomiyama

  Nov. 2023, 12th International Symposium on Measurement Techniques for Multiphase Flow

  [Refereed]


• Effects of surfactant on bubbly flow in narrow rectangular column

  Soichiro Horita, Ryo Kurimoto, Kosuke Hayashi, Akio Tomiyama

  Corresponding, Nov. 2023, 12th International Symposium on Measurement Techniques for Multiphase Flow

  [Refereed]


• 3×3ロッドバンドルにおける停滞水条件での壁面摩擦とボイド率

  Michio MURASE, Koji NISHIDA, Toshiya TAKAKI, Shin-ichiro KIDA, Ryo KURIMOTO, Kosuke HAYASHI, Akio TOMIYAMA

  The Japanese Society for Multiphase Flow, Oct. 2023, JAPANESE JOURNAL OF MULTIPHASE FLOW, 37(4) (4), 392 - 400

  [Refereed]

  Scientific journal


• Effects of liquid viscosity on interfacial and wall friction factors of swirling annular flows in a vertical pipe

  Ryoya Koto, Ryo Kurimoto, Kosuke Hayashi, Akio Tomiyama

  Corresponding, Elsevier BV, Oct. 2023, Nuclear Engineering and Design, 412, 112476 - 112476

  [Refereed]

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• Void Fraction of Air-Water Two-Phase Flows in a Vertically Placed Horizontal U-Bend

  Kosuke Hayashi, Shosuke Yasui, Ryo Kurimoto, Akio Tomiyama

  Informa UK Limited, Mar. 2023, Heat Transfer Engineering, 45(4-5) (4-5), 323 - 336

  [Refereed]

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• Study on Void Fractions of Large and Small Bubbles in a Bubble Column

  Nobuya KOBAYASHI, Ryo KURIMOTO, Kosuke HAYASHI, Akio TOMIYAMA

  Corresponding, The Japanese Society for Multiphase Flow, Jan. 2023, JAPANESE JOURNAL OF MULTIPHASE FLOW, 37(1) (1), 128 - 137

  [Refereed]

  Scientific journal


• Carbon dioxide-water bubbly flow in a vertical pipe with or without chemical absorption

  Devy Setiorini Sa'adiyah, Kanta Sato, Ryo Kurimoto, Kosuke Hayashi, Akio Tomiyama

  Begell House, 2023, Multiphase Science and Technology, 35(2) (2), 29 - 41

  [Refereed]

  Scientific journal


• Wall Friction Factor and Void Fraction in Vertical Pipes under Flooding Conditions

  Toshiya TAKAKI, Masaki YAMASHITA, Ryo KURIMOTO, Kosuke HAYASHI, Michio MURASE, Akio TOMIYAMA

  The Japanese Society for Multiphase Flow, Dec. 2022, JAPANESE JOURNAL OF MULTIPHASE FLOW, 36(4) (4), 440 - 451

  [Refereed]

  Scientific journal


• Effects of upper and lower pipe ends on interfacial and wall friction factors under counter-current flow limitation in a vertical pipe

  Masaki Yamashita, Ryo Kurimoto, Kosuke Hayashi, Toshiya Takaki, Michio Murase, Akio Tomiyama

  Corresponding, Nov. 2022, 2022 ANS Winter Meeting and Technology Expo

  [Refereed]


• Effects of liquid viscosity on friction factors of gas-liquid swirling annular flows in a vertical pipe

  Ryoya Koto, Ryo Kurimoto, Kosuke Hayashi, Akio Tomiyama

  Corresponding, Nov. 2022, 2022 ANS Winter Meeting and Technology Expo

  [Refereed]


• Measurements of void fractions in spherical particle beds under pool conditions

  Michio Murase, Koji Nishida, Yuta Tanaka, Ryo Kurimoto, Kosuke Hayashi, Akio Tomiyama

  Oct. 2022, 12th Japan-Korea Symposium on Nuclear Thermal Hydraulics and Safety

  [Refereed]


• Flow chracteristics in a vertical pipe with sharp-edged top and vottom ends under flooding conditions

  Toshiya Takaki, Michio Murase, Masaki Yamashita, Ryo Kurimoto, Kosuke Hayashi, Akio Tomiyama

  Oct. 2022, 12th Japan-Korea Symposium on Nuclear Thermal Hydraulics and Safety

  [Refereed]


• Effects of swirl intensity on interfacial and wall friction factors of annular flows in a vertical pipe

  Ryoya Koto, Ryo Kurimoto, Atsuya Imaizumi, Kosuke Hayashi, Akio Tomiyama

  Corresponding, Elsevier BV, Oct. 2022, Nuclear Engineering and Design, 399, 112001 - 112001

  [Refereed]

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• Liquid film thickness of upward air-water annular flow after passing through 90° bend

  Ryo Kurimoto, Yuji Takeuchi, Hisato Minagawa, Takahiro Yasuda

  Elsevier BV, Jul. 2022, Experimental Thermal and Fluid Science, 139, 110735 - 110735

  [Refereed]

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• Effects of swirl intensity on interfacial and wall friction factors of annular flows in a vertical pipe

  Ryo Kurimoto, Ryoya Koto, Kosuke Hayashi, Akio Tomiyama

  Elsevier BV, May 2022, 12th Japan-U.S. Seminar on Two-Phase Flow Dynamics 2022

  [Refereed]

  International conference proceedings

  Link to Kobe Univ. Repository (Kernel)


• Void Fractions in U-Bends of a Serpentine Tube

  Junichiro Kazi, Jumpei Fukuma, Ryo Kurimoto, Kosuke Hayashi, Akio Tomiyama

  Begell House, 2022, Multiphase Science and Technology, 34(4) (4), 41 - 55

  [Refereed]

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• Effects of Initial Liquid Height and Liquid Viscosity on Total Gas Holdup in a Bubble Column

  Nobuya Kobayashi, Ryo Kurimoto, Kosuke Hayashi, Akio Tomiyama

  Corresponding, Begell House, 2022, Multiphase Science and Technology, 34(4) (4), 1 - 13

  [Refereed]

  Scientific journal


• An ANN Correlation of Lift Coefficients of Bubbles in Linear Shear Flows

  Kosuke Hayashi, Junming Chen, Ryo Kurimoto, Akio Tomiyama

  Begell House, 2022, Multiphase Science and Technology, 34(2) (2), 67 - 82

  [Refereed]

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• Effects of Particle and Bubble Diameters on Removal Rate of Hydrophilic Fine Particles in Bubbly Flows

  Masatoshi Kawabata, Kosuke Hayashi, Ryo Kurimoto, Akio Tomiyama

  Begell House, 2022, Multiphase Science and Technology, 34(1) (1), 53 - 66

  [Refereed]

  Scientific journal


• Removal rate of hydrophobic fine particles in bubbly flow

  Masatoshi Kawabata, Kosuke Hayashi, Ryo Kurimoto, Akio Tomiyama

  Begell House, 2021, Multiphase Science and Technology, 33(4) (4), 1 - 13

  [Refereed]

  Scientific journal


• Removal of sludge attached to the wall of a planar vessel due to bubble motion

  Ryo Kurimoto, Kosuke Hayashi, Akio Tomiyama

  Begell House, 2021, Multiphase Science and Technology, 33(3) (3), 53 - 66

  [Refereed]

  Scientific journal


• Effects of Water Levels in Upper Tank on Flow Characteristics in a Vertical Pipe under Flooding at Its Top End

  Toshiya Takaki, Raito Goda, Ryo Kurimoto, Kosuke Hayashi, Michio Murase, Akio Tomiyama

  The Japanese Society for Multiphase Flow, 2021, Japanese Journal of Multiphase Flow, 35(3) (3), 463 - 472

  [Refereed]

  Scientific journal


• Effects of initial liquid height on total and local gas holdups in an air-water bubble column

  Nobuya Kobayashi, Shun Adomi, Ryo Kurimoto, Kosuke Hayashi, Akio Tomiyama

  Begell House, 2021, Multiphase Science and Technology, 33(2) (2), 87 - 101

  [Refereed]

  Scientific journal


• Effects of chemical absorption on mass transfer from single carbon dioxide bubbles in aqueous sodium hydroxide solution in a vertical pipe

  Devy Setiorini Sa'adiyah, Yuki Matsuo, Michael Schlüter, Ryo Kurimoto, Kosuke Hayashi, Akio Tomiyama

  Elsevier BV, 2021, Chemical Engineering Science, 245, 116852 - 116852

  [Refereed]

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• Flow Characteristics of Air-Water Two-Phase Flows in a Serpentine Tube

  Junichiro Kazi, Hitoshi Mori, Junpei Fukuma, Kosuke Hayashi, Ryo Kurimoto, Akio Tomiyama

  The Japanese Society for Multiphase Flow, 2021, Japanese Journal of Multiphase Flow, 35(1) (1), 85 - 92

  [Refereed]

  Scientific journal


• Effects of fluid properties on interfacial and wall friction factors under counter-current flow limitation in a vertical pipe with sharp-edged lower end

  Raito Goda, Ryo Kurimoto, Kosuke Hayashi, Michio Murase, Akio Tomiyama

  Elsevier BV, 2021, Nuclear Engineering and Design, 373, 111020 - 111020

  [Refereed]

  Scientific journal


• Spatial Evolution of CO2-Contaminated Water Bubble Flows in a Vertical Pipe

  Devy Setiorini Sa'adiyah, Kosuke Hayashi, Ryo Kurimoto, Akio Tomiyama

  Wiley, 2021, Chemie Ingenieur Technik, 93(1-2) (1-2), 247 - 259

  [Refereed]

  Scientific journal


• Bubble tracking simulations using simple models for fluctuating bubble motion

  Ryo Kurimoto, Kosuke Hayashi, Akio Tomiyama

  Lead, Begell House, 2020, Multiphase Science and Technology, 32(3) (3), 221 - 236

  [Refereed]

  Scientific journal


• Pressure drop of gas–liquid Taylor flow in square microchannels

  Ryo Kurimoto, Hiroki Tsubouchi, Hisato Minagawa, Takahiro Yasuda

  Springer Science and Business Media LLC, Jan. 2020, Microfluidics and Nanofluidics, 24(1) (1), 5

  [Refereed]

  Scientific journal


• A study on the reduction of wave resistance using wave interference by trimaran

  S. Fujimura, T. Yasuda, H. Minagawa, R. Kurimoto

  Nov. 2019, 12th Pacific Symposium on Flow Visualization and Image Processing, 5 pages, English

  [Refereed]

  International conference proceedings


• Effects of surfactant on bubble breakup at T-junction and characteristics of Taylor flow of mini- and micro-channels

  Kosuke Hayashi, Daiki Suzuki, Ryo Kurimoto, Shigeo Hosokawa, Akio Tomiyama

  May 2019, 10th International Conference on Multiphase Flow, 2pages, English

  [Refereed]

  International conference proceedings


• Pressure drop of gas-liquid Taylor flow in square microchannels

  Ryo Kurimoto, Hiroki Tsubouchi, Hisato Minagawa, Takahiro Yasuda

  May 2019, 10th International Conference on Multiphase Flow, 2pages, English

  [Refereed]

  International conference proceedings


• Effects of surfactant on gas-liquid slug flow in circular microchannels

  Ryo Kurimoto, Hisato Minagawa, Takahiro Yasuda

  Begell House, 2019, Multiphase Science and Technology, 31(3) (3), 273 - 286

  [Refereed]

  Scientific journal


• Improvement in wing performance using a wing with sinusoidal leading edge (The effect of the wing camber and the wing camber position)

  Keita Fukui, Takahiro Yasuda, Hisato Minagawa, Ryo Kurimoto

  Study Group of Aero Aqua Bio-mechanics, 2019, Journal of Aero Aqua Bio-mechanisms, 8(1) (1), 13 - 19

  [Refereed]

  Scientific journal


• Effect of the Reynolds Number on the Performance of a NACA0012 Wing with Leading Edge Protuberance at Low Reynolds Numbers

  Takahiro Yasuda, Keita Fukui, Keiji Matsuo, Hisato Minagawa, Ryo Kurimoto

  Springer Science and Business Media LLC, 2019, Flow, Turbulence and Combustion, 102(2) (2), 435 - 455

  [Refereed]

  Scientific journal


• Experimental study on gas-liquid Taylor flow in rectangular microchannels

  Hiroki Tsubouchi, Ryo Kurimoto, Hisato Minagawa, Takahiro Yasuda

  Oct. 2018, 13th International Symposium on Advanced Science and Technology in Experimental Mechanics, 6 pages, English

  [Refereed]

  International conference proceedings


• A Study on the Wing Performance and the Passive Separation Control of Two Tandem Arranged NACA0012 Wing using Leading Edge Protuberance in Low Reynolds Number

  Taito Inoue, Takahiro Yasuda, Hisato Minagawa, Ryo Kurimoto

  Oct. 2018, 13th International Symposium on Advanced Science and Technology in Experimental Mechanics, 6 pages, English

  [Refereed]

  International conference proceedings


• マイクロバブルのゼータ電位が水耕コマツナの生育に及ぼす影響

  南川 久人, 松村 怜, 畑 直樹, 原田 英美子, 栗本 遼, 安田 孝宏, 宮嵜 一樹

  Sep. 2018, 実験力学, 18(3) (3), 214 - 221, Japanese

  [Refereed]

  Scientific journal


• The improvement of the wing performance using the wing with sinusoidal leading edge (The effect of the wing camber and the wing camber position)

  Keita Fukui, Takahiro Yasuda, Hisato Minagawa, Ryo Kurimoto

  Study Group of Aero Aqua Bio-mechanics, Sep. 2018, 7th International Symposium on Aero-aqua Bio-Mechanisms, English

  [Refereed]

  International conference proceedings


• Numerical investigation of bubble shape and flow field of gas–liquid slug flow in circular microchannels

  Ryo Kurimoto, Kosuke Hayashi, Hisato Minagawa, Akio Tomiyama

  Elsevier BV, 2018, International Journal of Heat and Fluid Flow, 74, 28 - 35

  [Refereed]

  Scientific journal


• マイクロバブル水を用いた浸漬洗浄に関する基礎的研究

  南川 久人, 杉本 健太, 栗本 遼, 安田 孝宏

  Dec. 2017, 実験力学, 17(4) (4), 298 - 303, Japanese

  [Refereed]

  Scientific journal


• Void fraction and pressure drop measurement of gas-liquid slug flow in square microchannels

  Ryo Kurimoto, Yusuke deguchi, Hisato Minagawa, Takahiro Yasuda

  Dec. 2017, 10th International Symposium on Measurement Techniques for Multiphase Flow, ISMTMF-R001-102, 2 pages, English

  [Refereed]

  International conference proceedings


• Prediction models of void fraction and pressure drop for gas-liquid slug flow in microchannels

  Ryo Kurimoto, Kento Nakazawa, Hisato Minagawa, Takahiro Yasuda

  The void fraction and pressure drop of gas-liquid slug flow in a circular microchannel were measured using a high-speed video camera and image processing method. Water and two types of glycerol water solutions were used as the liquid phase, and N-2 gas was used as the gas phase. Four microchannels with different diameters (200, 320, 500, and 700 mu m) were used. The measured data were compared with the existing and newly developed models. The following conclusions were obtained: (1) the pressure drop was predicted using the model proposed by Warnier et al. (2010) with the liquid film thickness model proposed by Han and Shikazono (2009) within +/- 20%, (2) a distribution parameter model developed in this study can predict the distribution parameter within +/- 10% and is more reliable than the other models. (C) 2017 Elsevier Inc. Alt rights reserved.

  ELSEVIER SCIENCE INC, Nov. 2017, EXPERIMENTAL THERMAL AND FLUID SCIENCE, 88, 124 - 133, English

  [Refereed]

  Scientific journal


• THE EFFECT OF THE REYNOLDS NUMBER ON THE PERFORMANCE OF THE NACA0012 WING WITH THE LEADING EDGE PROTUBERANCE AT LOW REYNOLDS NUMBERS

  Takahiro Yasuda, Keita Fukui, Keiji Matsuo, Hisato Minagawa, Ryo Kurimoto

  Oct. 2017, The 6th International Conference on Jets, Wakes and Separated Flows 6pages, English

  [Refereed]

  International conference proceedings


• Velocity and shape of single bubble in horizontal cylindrical channel

  Ryo Kurimoto, Hisato Minagawa, Takahiro Yasuda

  Nov. 2016, 11th International Symposium on Advanced Science and Technology in Experimental Mechanics, 5 pages, English

  [Refereed]

  International conference proceedings


• Effects of surfactant on quasi-static bubble growth from an orifice

  Ryo Kurimoto, Takahiro Yasuda, Hisato Minagawa

  The effects of surfactant on quasi-static bubble growth from an orifice of 2.0 mm in diameter were investigated by using a high-speed video camera and an image processing method. Triton X-100 was used for surfactant and its concentrations were set at 0.0, 0.1, 0.3, 0.5 and 1.0 mol/m(3). To obtain further knowledge of the bubble growth in the clean and contaminated systems, the flow fields around the bubbles were measured by using particle image velocimetry (PIV). The conclusions obtained are as follows: (1) the increase rate of the bubble aspect ratio in the contaminated system almost agrees with that in the clean system before reaching a specific bubble volume, and becomes larger after that, (2) as the surfactant concentration increases, the smallest contact angle increases and the bubble volume at the smallest contact angle decreases; furthermore, the bubble volume at the branch point of the contact angle between the clean and contaminated systems nearly agrees with that at the branch point of the aspect ratio, (3) the surfactant does not affect the flow fields around the growing bubbles in the experiment. (c) 2016 Elsevier B.V. All rights reserved.

  ELSEVIER SCIENCE SA, Jun. 2016, CHEMICAL ENGINEERING AND PROCESSING, 104, 154 - 159, English

  [Refereed]

  Scientific journal


• Effects of Microbubbles on Germination and Growth of Spinach

  MINAGAWA Hisato, FUJIWARA Kai, KURIMOTO Ryo, YASUDA Takahiro, HARADA Emiko, HATA Naoki

  Effects of microbubbles on germination and growth in deep flow technique of spinach (Spinacia oleracea) were investigated. In the germination experiment, four experiment plots; (1) underwater germination with microbubble water plot (MB plot), (2) underwater germination with aerated water plot (Aeration plot), (3) underwater germination with water plot (Water plot), (4) germination on wet cotton plot (Control plot), were used. Two hundred individuals were germinated for each plot. Germination rate of MB plot after 7 days was about twice as high as that of Aeration plot and Control plot. In the growth experiment, three experiment plots; (1) tenth solution concentration water with microbubble plot (MB plot), (2) tenth solution concentration water plot (Aeration plot), (3) full solution concentration water plot (Control plot), were used. Twelve individuals were grown for each plot. Leaves weight of MB plot was as much as that of Control plot. In contrast, plant physiological disorders appeared in all plants of Aeration plot. Multi-element determination revealed that K concentration of Aeration plot was lower than that of the others plots. These results indicate that microbubbles contribute to the plants absorbing the nutrient from roots.

  The Japanese Society for Experimental Mechanics, Mar. 2016, Journal of the Japanese Society for Experimental Mechanics, 16(1) (1), 77 - 83, Japanese

  [Refereed]

  Scientific journal


• EFFECT OF EXTERNAL ELECTRIC FIELD ON SPREADING OF A LIQUID DROPLET AT LOW CAPILLARY NUMBER REGIME: EXPERIMENTAL EVIDENCES AND NUMERICAL SIMULATION

  G. Saccone, R. Kurimoto, M. Bucci, P. Di Marco, A. Tomiyama

  Oct. 2015, 7th European-Japanese Two-Phase Flow Group Meeting, 12 pages, English

  [Refereed]

  International conference proceedings


• Bubble growth in microgravity under the action of electric forces: experiments and numerical simulation

  Paolo Di Marco, Ryo Kurimoto, Giacomo Saccone, Kosuke Hayashi, Akio Tomiyama

  Aug. 2014, Proc. of the 15th International Heat Transfer Conference, IHTC-15, IHTC15-08960, 11pages, English

  [Refereed]

  International conference proceedings


• Drag reduction of turbulent flow with micro bubbles in vertical pipes

  Hisato MINAGAWA, Kazumasa SAKAI, Ryo KURIMOTO, Takahiro YASUDA

  Japan Society of Mechanical Engineers, 2014, Transactions of the JSME (in Japanese), 80(817) (817), FE0259 - FE0259

  [Refereed]

  Scientific journal


• Bubble shape under the action of electric forces

  Paolo Di Marco, Ryo Kurimoto, Giacomo Saccone, Kosuke Hayashi, Akio Tomiyama

  In the present paper, a study of bubble dynamics in adiabatic conditions (i.e. with no heat and mass transfer) is carried out in order to understand the fundamental physics ruling the evolution of their interface, and open the way to the comprehension of more complex heat and mass transfer issues involving them. An external electric field is applied to the system to investigate the potentiality of this technique to enhance phase separation and heat transfer. A new numerical method for EHD action on a growing bubble has been developed combining VOF and level-set methods. To experimentally validate it, well-defined and simple boundary conditions have been selected: all the forms of heat and mass transfer have been excluded from the system, and an axisymmetric electric field configuration has been chosen in order to adopt a 2-D simulation. In the experimental apparatus a steady bubble stemming from an orifice in a still fluid (FC-72) has been produced, and a dc potential up to 20. kV was applied to a ring-shaped electrode coaxial with the orifice. In this way, in a first instance, all the dynamical effects have been eliminated, and a clear location of the three phase contact line, which is pinned to the orifice, has been defined. The bubble profile obtained from the experiment has been digitized and compared successfully with the outcomes of the numerical method. Furthermore, the study of the local curvature of the interface allowed the development of a new theory of the local electrical stress to be included in the capillary equation, which compares well with experimental data. Finally, the validated numerical method has been used to predict the bubble shape in the absence of gravity, in preparation of microgravity experiments. © 2013 Elsevier Inc.

  Sep. 2013, Experimental Thermal and Fluid Science, 49, 160 - 168, English

  [Refereed]

  Scientific journal


• Terminal velocities of clean and fully-contaminated drops in vertical pipes

  Ryo Kurimoto, Kosuke Hayashi, Akio Tomiyama

  Terminal velocities and shapes of drops rising through vertical pipes in clean and fully-contaminated systems are measured by using a high-speed video camera and an image processing method. Silicon oils and glycerol water solutions are used for the dispersed and continuous phases, respectively. Triton X-100 is used for surfactant. Clean and contaminated drops take either spherical, spheroidal or deformed spheroidal shapes when the diameter ratio λ is less than a critical value, λC, whereas they take bullet shapes for λ> λC (Taylor drops). The applicability of available drag and Froude number correlations is examined through comparisons with the measured data. Effects of surfactant on the shape and terminal velocity of a Taylor drop are also discussed based on the experimental data and interface tracking simulations. The conclusions obtained are as follows: (1) drag and Froude number correlations proposed so far give reasonable estimations of the terminal velocities of clean drops at any λ, (2) the terminal velocities of contaminated drops are well evaluated by making the viscosity ratio μ* infinity in the drag correlation for clean drops in the viscous force dominant regime, (3) the effects of surfactant on the shape and terminal velocity of a Taylor drop become significant as the Eötvös number, EoD, decreases and μ* increases, and (4) the reduction in surface tension due to the addition of surfactant would be the cause of the increase in the terminal velocity and elongation of a contaminated Taylor drop. © 2012 Elsevier Ltd.

  Mar. 2013, International Journal of Multiphase Flow, 49, 8 - 23, English

  [Refereed]

  Scientific journal


• Effects of Surfactant on the Motion of Bubbles in Linear Shear Flows

  Kosuke Hayashi, Ryo Kurimoto, Shigeo Hosokawa, Akio Tomiyama

  Jun. 2012, 2012 Japan-U.S. seminar on Two-Phase flow Dynamics, 10pages, English

  International conference proceedings


• Terminal velocity of a Taylor drop in a vertical pipe

  K. Hayashi, R. Kurimoto, A. Tomiyama

  A scaling analysis based on the field equations for two phases and the jump conditions at the interface is carried out to deduce a balance of forces acting on a Taylor drop rising through stagnant liquid in a vertical pipe. The force balance is utilized to deduce a functional form of an empirical correlation of terminal velocity of the Taylor drop. Undetermined coefficients in the correlation are evaluated by making use of available correlations for two limiting cases, i.e. extremely high and low Reynolds number Taylor bubbles in large pipes. Terminal velocity data obtained by interface tracking simulations are also used to determine the coefficients. The proposed correlation expresses the Froude number Fr as a function of the drop Reynolds number Re-D, the Eotvos number Eo(D) and the viscosity ratio mu*. Comparisons between the correlation, simulations and experimental data confirm that the proposed correlation is applicable to Taylor drops under various conditions, i.e., 0.002 < Re-D < 4960, 4.8 < Eo(D) < 228, 0 <= mu* <= 70, 1 < N < 14700, -12 < log M < 4, and d/D < 1.6, where N is the inverse viscosity number, M the Morton number, d the sphere-volume equivalent drop diameter and D the pipe diameter. (C) 2010 Elsevier Ltd. All rights reserved.

  PERGAMON-ELSEVIER SCIENCE LTD, Apr. 2011, INTERNATIONAL JOURNAL OF MULTIPHASE FLOW, 37(3) (3), 241 - 251, English

  [Refereed]

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• Numerical simulation of bubbles contaminated with soluble surfactant

  Ryo Kurimoto, Kosuke Hayashi, Akio Tomiyama

  An interface tracking method for predicting motions of bubbles contaminated with soluble surfactants is presented. A level set method is utilized to track the interface. Transportations of surfactants in the bulk liquid and those at the interface are taken into account. The amount of adsorption and desorption is evaluated by using the Frumkin & Levich model. Simulations of bubbles contaminated with soluble surfactants are carried out, i.e., single air bubbles rising through stagnant water, Taylor bubbles in a vertical pipe filled with water, and a wobbling bubble in a vertical duct. As a result, the following conclusions are obtained: (1) the increase in drag coefficients of spherical bubbles due to the presence of surfactant, i.e. Marangoni effect, is well predicted, (2) surfactants mainly accumulate at the rear edge of a Taylor bubble and the Marangoni effect is very small in the nose region at high Eötvös and low Morton numbers, and therefore, the effects of surfactant on the bubble rising velocity are small in low viscosity systems, and (3) the surfactant concentration is low in the top region of a wobbling bubble, whereas it is high in the bottom region. The peak concentration appears at the side edge of the bubble and the location of the peak concentration moves with the bubble and wake movements. Copyright © 2011 by ASME.

  2011, ASME-JSME-KSME 2011 Joint Fluids Engineering Conference, AJK 2011, 1(D) (D), 1641 - 1650, English

  [Refereed]

  International conference proceedings


• Terminal velocity of a single drop in a vertical pipe in clean and fully-contaminated systems

  Ryo Kurimoto, Kosuke Hayashi, Akio Tomiyama

  May 2010, Proc. of International Conference on Multiphase Flow ICMF2010, 11pages, English

  [Refereed]

  International conference proceedings


• Terminal velocity of a Taylor drop in a vertical pipe

  Kosuke Hayashi, Ryo Kurimoto, Akio Tomiyama

  May 2010, Proc. of International Conference on Multiphase Flow ICMF2010, 13pages, English

  [Refereed]

  International conference proceedings


• Dimensional analysis of terminal velocity of a Taylor bubble in a vertical pipe

  Kosuke Hayashi, Ryo Kurimoto, Akio Tomiyama

  An empirical correlation of the terminal velocity of a Taylor bubble in a vertical pipe is proposed. A fundamental functional form, Fr = f (Re D, EoD), of the correlation is deduced by carrying out a dimensional analysis based on the local instantaneous field equations and the jump conditions. Here Fr is the Froude number, ReD the bubble Reynolds number, and EoD the Eötvös number. In the two limiting cases, (EoD →∞ and ReD →∞) and (EoD →∞ and ReD → 0), the deduced functional form approaches those of the well-known Fr models. Coefficients appearing in the correlation are determined by making use of the limiting cases and available experimental data. Comparisons between the proposed Fr correlation and the experimental data show that the correlation gives a good estimation of terminal velocities of Taylor bubbles for a wide range of fluid properties and pipe diameters, i.e., 10-7 < ReD < 104, 4 < EoD < 3 × 103, 10-2 < N < 105, and -11 < log M < 10, where N is the inverse viscosity number and M the Morton number. © 2010 by Begell House, Inc.

  2010, Multiphase Science and Technology, 22(3) (3), 197 - 210, English

  [Refereed]

  Scientific journal


• Interface Tracking Simulation of Drops Rising through Liquids in a Vertical Pipe Using Three Coordinate Systems

  Kosuke Hayashi, Ryo Kurimoto, Akio Tomiyama

  Interface tracking simulations of single drops rising through a vertical pipe are carried out using three coordinate systems, i.e. cylindrical, general curvilinear and Cartesian coordinates, to investigate the effects of coordinate system and spatial resolution on the accuracy of predictions. Experiments of single drops in a vertical pipe are also conducted to obtain experimental data for comparisons with simulations. The drop shape observed are spheroidal and deformed spheroidal at low values of the diameter ratio, Λ, of the sphere-volume equivalent diameter of a drop to the pipe diameter, whereas they take bullet-shapes at large Λ. The conclusions obtained are as follows: (1) the effects of coordinate system on drop shape are small at low Λ. At large Λ, the effects are also small for drops in a low viscosity system, whereas non-physical shape distortion takes place when the Cartesian coordinates are used with low spatial resolution for drops in a high viscosity system, and (2) the drop terminal velocity and the velocity profile in the liquid film between a bullet-shaped drop and a pipe wall are well predicted using all the coordinate systems tested even at low spatial resolution.

  SAGE Publications, 2010, The Journal of Computational Multiphase Flows, 2(1) (1), 47 - 57, English

  [Refereed]

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• Dimensional Analysis of Terminal Velocity of a Taylor Bubble in a Vertical Pipe

  Kosuke Hayashi, Ryo Kurimoto, Akio Tomiyama

  Sep. 2009, 5th European Two-Phase Flow Group Meeting , 6pages, English

  International conference proceedings

• Fluid Engineering Laboratory, Department of Mechanical Systems Engineering, School of Engineering, The University of Shiga Prefecture

  南川久人, 安田孝宏, 栗本 遼

  日本混相流学会, Mar. 2014, 混相流, 27(5) (5), 102 - 105, Japanese

• 堆積層内気液二相流の流動特性に関する研究

  栗本遼, 高木俊弥, 林公祐, 村瀬道雄, 川路正裕, 冨山明男

  日本混相流学会 混相流シンポジウム2024, Sep. 2024


• 鉛直円管内旋回環状流内体積率及び圧力損失の一次元三流体モデルによる予測

  古東遼也, 栗本遼, 林公祐, 冨山明男

  日本混相流学会 混相流シンポジウム2024, Sep. 2024


• フラッディング状態での鉛直管内流動特性に対する管径の影響

  高木俊弥, 栗本遼, 林公祐, 村瀬道雄, 冨山明男

  日本混相流学会 混相流シンポジウム2024, Sep. 2024


• 停滞水条件における3×3ロッドバンドル内での界面摩擦

  村瀬道雄, 西田浩二, 高木俊弥, 栗本遼, 林公祐, 冨山明男

  日本混相流学会 混相流シンポジウム2024, Sep. 2024


• 気泡塔内非均質気泡流におけるドリフトフラックスパラメータの検討

  佐々木翔平, 栗本遼, 林公祐

  日本混相流学会 混相流シンポジウム2024, Sep. 2024


• 気泡塔内ボイド率に及ぼす初期液位依存性に関する研究

  芳田直征, 栗本遼, 林公祐, 冨山明男

  日本混相流学会 混相流シンポジウム2024, Sep. 2024


• Experimental analysis of bubble terminal velocity in fiber bundle

  Roberta Fátima Neumeister, Ryuya Komine, Ryo Kurimoto,Gherhardt Ribatski, Kosuke Hayashi

  日本混相流学会 混相流シンポジウム2024, Sep. 2024


• 平板間静止液中を上昇する単一気泡の形状及び抗力係数

  田代壮佑, 栗本遼, 林公祐

  日本混相流学会 混相流シンポジウム2024, Sep. 2024


• 鉛直円管内テイラー気泡の液膜厚さに加振が及ぼす影響に関する研究

  堀田修平, 山本開斗, 栗本遼, 林公祐

  日本混相流学会 混相流シンポジウム2024, Sep. 2024


• 平板間静止液中単一気泡の形状及び上昇速度に関する研究

  田代壮佑, 栗本遼, 林公祐

  日本混相流学会 混相流シンポジウム2024, Sep. 2024


• 鉛直細円柱群内の気泡の上昇運動に関する研究

  小峰龍也, Roberta, Fátima Neumeister, 栗本遼,Gherhardt Ribatski, 林公祐

  日本混相流学会 混相流シンポジウム2024, Sep. 2024


• 微細流路内テイラー気泡の形状に及ぼす界面活性剤の影響

  五十嵐亮太, 栗本遼, 林公祐

  日本混相流学会 混相流シンポジウム2024, Sep. 2024


• 正方形マイクロチャネル内テイラー流の圧力損失と気泡速度に関する研究

  栗本遼, 林公祐, 冨山明男

  第67回理論応用力学講演会, Sep. 2024


• Surface Coverage of Bubbles with Surfactant or Particles

  Kosuke Hayashi, Takumi Mori, Koya Chujo, Ryota Igarashi, Ryo Kurimoto, Akio Tomiyama

  IUTAM Symposium on Dynamics and Interface Phenomena of Bubbles and Droplets at Multiple Scales, Dec. 2023

  [Invited]


• 鉛直管におけるフラッディング状態での管内流動特性

  高木俊弥, 村瀬道雄, 栗本遼, 林公祐, 冨山明男

  日本混相流学会 混相流シンポジウム2023, Aug. 2023

  [Invited]


• 鉛直管でのフラッディング状態における気液界面摩擦係数

  高木俊弥, 村瀬道雄, 栗本遼, 林公祐, 冨山明男

  日本混相流学会 混相流シンポジウム2023, Aug. 2023


• 停滞水条件における3x3ロッドバンドル内での流動特性

  村瀬道雄, 高木俊弥, 西田浩二, 山下誠希, 栗本遼, 林公祐, 冨山明男

  日本混相流学会 混相流シンポジウム2023, Aug. 2023


• 微細流路を用いた粒子付着気泡の生成と抗力係数の評価

  中條光野, 林公祐, 栗本遼, 冨山明男

  日本混相流学会 混相流シンポジウム2023, Aug. 2023


• 微細流路内汚染系テイラー流における気泡への界面活性剤吸着量に関する研究

  森匠, 林公祐, 栗本遼, 冨山明男

  日本混相流学会 混相流シンポジウム2023, Aug. 2023


• U字管内気液二相流のボイド率に及ぼすベンド曲率の影響

  渡辺直輝, 芳田直征, 林公祐, 栗本遼, 冨山明男

  日本混相流学会 混相流シンポジウム2023, Aug. 2023


• 鉛直円管内旋回環状流の界面及び壁面摩擦係数に及ぼす管径の影響に関する研究

  古東遼也, 栗本遼, 林公祐, 冨山明男

  日本混相流学会 混相流シンポジウム2023, Aug. 2023


• Effects of fine particles and surfactant on bubbly flows in narrow rectangular column

  Ryo Kurimoto, Soichiro Horita, Kosuke Hayashi, Akio Tomiyama

  ASME-JSME-KSME Joint Fluids Engineering Conference AJKFED 2023, Jul. 2023


• Bubbly flows in a column with submerged hollow fiber membranes

  Ryo Kurimoto, Shin Takaya, Kosuke Hayashi, Akio Tomiyama

  11th International Conference on Multiphase Flow, Apr. 2023


• 中空糸膜を有する塔内気泡流に関する研究

  髙屋慎, 栗本遼, 林公祐, 冨山明男

  日本機械学会関西支部第98期定時総会講演会, Mar. 2023


• 鉛直円管内気液二相対向流の界面及び壁面摩擦係数に及ぼす管端形状の影響

  山下誠希, 栗本遼, 林公祐, 高木俊弥, 村瀬道雄, 冨山明男

  日本原子力学会熱流動部会 第4回若手研究者勉強会, Nov. 2022


• 鉛直円管内旋回環状流の摩擦係数に及ぼす液相動粘度の影響

  古東遼也, 栗本遼, 林公祐, 冨山明男

  日本原子力学会熱流動部会 第4回若手研究者勉強会, Nov. 2022


• Bubbly flows in a column with submerged hollow fiber membranes

  Ryo Kurimoto, Shin Takaya, Kosuke Hayashi, Akio Tomiyama

  European-American-Japanese Two-Phase Flow Group Meeting, Oct. 2022


• Bubbly flows in a vertical pipe with horizontal oscillation

  Kosuke Hayashi, Hiroki Kato, Naoyuki Yoshida, Ryo Kurimoto, Akio Tomiyama

  4th International Symposium on Multiscale Multiphase Process Engineering, Sep. 2022


• Pressure drop of single bubble in Taylor flow through square microchannels

  Ryo Kurimoto, Kosuke Hayashi, Akio Tomiyama

  4th International Symposium on Multiscale Multiphase Process Engineering, Sep. 2022


• 上下端シャープエッジ鉛直管におけるフラッディング状態での流動特性

  高木俊弥, 村瀬道雄, 山下誠希, 栗本遼, 林公祐, 冨山明男

  日本原子力学会2022年秋の大会, Sep. 2022


• 正方形流路内テイラー流における気泡の圧力損失に関する研究

  栗本遼, 林公祐, 冨山明男

  日本混相流学会混相流シンポジウム2022, Aug. 2022


• 鉛直円管内気液二相対向流の界面及び壁面摩擦係数に及ぼす管端形状の影響

  山下誠希, 栗本遼, 林公祐, 高木俊弥, 村瀬道雄, 冨山明男

  日本混相流学会混相流シンポジウム2022, Aug. 2022


• 鉛直円管内旋回環状流の界面及び壁面摩擦係数に及ぼす旋回強度及び液相粘度の影響

  古東遼也, 栗本遼, 林公祐, 冨山明男

  日本混相流学会混相流シンポジウム2022, Aug. 2022


• 狭平板間静止液中単一気泡の分裂に関する研究

  南谷一磨, 古東遼也, 栗本遼, 林公祐, 冨山明男

  日本混相流学会混相流シンポジウム2022, Aug. 2022


• マイクロチャネル内気液二相流の実験的・数値的研究

  栗本遼

  第8回複雑熱流体工学研究センターシンポジア, Nov. 2021


• 鉛直管上端フラッディングでの流動特性に対する上部タンク水位の影響

  高木俊弥, 栗本遼, 林公祐, 村瀬道雄, 冨山明男

  日本原子力学会2021年秋の大会, Sep. 2021


• 気泡流による中空糸膜の汚れ除去と揺動に関する研究

  高屋 慎, 栗本 遼, 林 公祐, 冨山 明男

  日本混相流学会混相流シンポジウム2021, Aug. 2021


• Lベンド通過後の鉛直細管内環状流の液膜厚さ推移に関する研究

  竹内雄二, 栗本遼, 南川久人, 安田孝宏

  日本混相流学会混相流シンポジウム2021, Aug. 2021


• 気泡塔内平均及び局所ボイド率の初期液位依存性に関する研究

  安富舜, 小林暢也, 栗本遼, 林公祐, 冨山明男

  日本混相流学会混相流シンポジウム2021, Aug. 2021


• 振動を伴う鉛直円管内の気液二相流動特性に関する研究

  加藤大樹, 芳田直征, 林公祐, 栗本遼, 冨山明男

  日本混相流学会混相流シンポジウム2021, Aug. 2021


• 堆積層内における気液二相流に関する研究

  田中裕太, 栗本遼, 村瀬道雄, 林公祐, 冨山明男

  日本混相流学会混相流シンポジウム2021, Aug. 2021


• 鉛直円管内気液二相流の界面および壁面摩擦係数に及ぼす旋回強度の影響

  今泉敦哉, 栗本遼, 林公祐, 冨山明男

  日本混相流学会混相流シンポジウム2021, Aug. 2021


• 垂直U字管内気液二相流のボイド率に関する研究

  安井翔亮, 林公祐, 栗本遼, 冨山明男

  日本混相流学会混相流シンポジウム2021, Aug. 2021


• 鉛直サーペンタイン管内気液二相流のボイド率及び液膜厚さ

  福間淳平, 加次淳一郎, 栗本遼, 林公祐, 冨山明男

  日本混相流学会混相流シンポジウム2021, Aug. 2021


• Study on effects of acceleration of a vertical pipe on two-phase flows in the pipe

  芳田直征, 林公祐, 栗本遼, 冨山明男

  日本混相流学会混相流シンポジウム2020, Aug. 2020


• Study on chemisorption from single bubbles rising through alkaline solutions in a vertical pipe

  松尾優樹, Sa’adiyah Devy, Setiorini, 栗本遼, 林公祐, 冨山明男

  日本混相流学会混相流シンポジウム2020, Aug. 2020


• Effects of liquid viscosity on interfacial and wall friction factors of gas-liquid two-phase swirling flows in a vertical pipe

  矢原喜裕, 今泉敦哉, 栗本遼, 林公祐, 冨山明男

  日本混相流学会混相流シンポジウム2020, Aug. 2020


• Study on annular flows in circular pipe with L-shaped bend

  宮脇俊, 栗本遼, 南川久人, 安田孝宏

  日本混相流学会混相流シンポジウム2020, Aug. 2020


• 狭平行平板間を上昇する気泡の運動に関する研究

  大林良貴, 栗本遼, 南川久人, 安田孝宏

  日本機械学会関西支部第95期定時総会講演会, Mar. 2020, Japanese, Domestic conference

  Poster presentation


• Numerical simulation of air-water two-phase flow in pipes with branch junction

  Shun Miyawaki, Ryo Kurimoto, Hisato Minagawa, Takahiro Yasuda

  11th International Symposium on Measurement Techniques for Multiphase Flow, Nov. 2019


• 低Re数領域における直列配置されたNACA0012翼周りの流れと翼性能に関する研究

  井上太斗, 安田孝宏, 南川久人, 栗本遼

  日本機械学会2019年度年次大会, Sep. 2019, Japanese, Domestic conference

  Oral presentation


• エアーノズルで発生する流体騒音の低減に関する研究

  佐野知樹, 安田孝宏, 高山喜信, 三浦敬典, 南川久人, 栗本遼

  日本機械学会2019年度年次大会, Sep. 2019, Japanese, Domestic conference

  Oral presentation


• 正方形マイクロチャネル内気液二相スラグ流の圧力損失

  坪内宏樹, 栗本遼, 南川久人, 安田孝宏

  日本混相流学会混相流シンポジウム2019, Aug. 2019, Japanese, Domestic conference

  Oral presentation


• 進行波を利用したポンプの性能評価に関する研究

  服部健太, 安田孝宏, 南川久人, 栗本遼, 松村雄一

  日本機械学会第96期流体工学部門講演会, Nov. 2018, Japanese, Domestic conference

  Oral presentation


• 前縁波形状翼を用いた翼性能の改善に関する研究（前縁波形状翼の有効範囲の検討）

  福井啓太, 安田孝宏, 南川久人, 栗本遼

  日本機械学会第96期流体工学部門講演会, Nov. 2018, Japanese, Domestic conference

  Oral presentation


• 矩形マイクロチャネル内気液二相テイラー流に関する研究

  栗本遼, 南川久人, 安田孝宏

  混相流シンポジウム2018, Aug. 2018, Japanese, Domestic conference

  Oral presentation


• ゼータ電位の異なるマイクロバブルがコマツナの生育に与える影響（生育実験と元素分析）

  宮嵜一樹, 松村怜, 南川久人, 安田孝宏, 栗本遼, 畑直樹, 原田英美子

  混相流シンポジウム2018, Aug. 2018, Japanese, Domestic conference

  Oral presentation


• Pressure drop and void fraction of gas-liquid Taylor flow in square microchannels

  Ryo Kurimoto, Yusuke Deguchi, Hisato Minagawa, Takahiro Yasuda

  8th European-Japanese Two-Phase Flow Group Meeting, Apr. 2018


• 振動平板ポンプの開発および性能評価に関する研究

  服部健太, 安田孝宏, 南川久人, 松村雄一, 栗本遼

  日本機械学会関西支部第93期定時総会講演会, Mar. 2018, Japanese, Domestic conference

  Poster presentation


• 前縁波形状翼を用いた翼性能の改善に関する研究（翼キャンバーの影響）

  福井啓太, 安田孝宏, 南川久人, 栗本遼

  日本機械学会関西支部第93期定時総会講演会, Mar. 2018, Japanese, Domestic conference

  Poster presentation


• 低レイノルズ数領域で用いる前縁波形状翼の最適な形状に関する研究

  松尾啓志, 安田孝宏, 南川久人, 栗本遼

  2017年度日本機械学会年次大会, Sep. 2017, Japanese, Domestic conference

  Oral presentation


• pHが異なる低濃度培養液でのマイクロバブル処理が水耕コマツナの生育に及ぼす影響

  松村怜, 畑直樹, 南川久人, 原田英美子, 安田孝宏, 栗本遼, 宮嵜一樹

  園芸学会平成29年度秋季大会, Sep. 2017, Japanese, Domestic conference

  Oral presentation


• 清浄及び汚染系におけるマイクロチャネル内気液二相スラグ流に関する研究

  栗本遼, 南川久人, 安田孝宏

  混相流シンポジウム2017, Aug. 2017, Japanese, Domestic conference

  Oral presentation


• マイクロバブルのゼータ電位がコマツナの生育に及ぼす影響

  松村怜, 南川久人, 安田孝宏, 栗本遼, 畑直樹, 原田英美子

  混相流シンポジウム2017, Aug. 2017, Japanese, Domestic conference

  Oral presentation


• Bubble growth from an orifice under the action of electric forces

  Ryo Kurimoto, Paolo Di Marco, Giacomo Saccone, Hisato Minagawa, Akio Tomiyama

  53rd European Two-Phase Flow Group Meeting, May 2017


• マイクロバブル水洗浄に関する基礎研究

  杉本健太, 南川久人, 栗本遼, 安田孝宏

  日本機械学会関西支部第92期定時総会講演会, Mar. 2017, Japanese, Domestic conference

  Oral presentation


• マイクロチューブ内気液二相スラグ流に関する研究

  中澤健登, 栗本遼, 南川久人, 安田孝宏

  日本機械学会関西支部第92期定時総会講演会, Mar. 2017, Japanese, Domestic conference

  Oral presentation


• 低レイノルズ数領域における前縁波形状翼を用いた翼性能の向上に関する研究

  松尾啓志, 福井啓太, 安田孝宏, 南川久人, 栗本遼

  日本機械学会関西支部第92期定時総会講演会, Mar. 2017, Japanese, Domestic conference

  Poster presentation


• 水平管内を流れる気泡に関する研究

  出口祐介, 栗本遼, 南川久人, 安田孝宏

  日本機械学会関西支部第92期定時総会講演会, Mar. 2017, Japanese, Domestic conference

  Poster presentation


• マイクロバブルがサラダナの生育に与える影響

  松村怜, 南川久人, 安田孝宏, 栗本遼, 保壽一鑑

  日本機械学会関西支部第92期定時総会講演会, Mar. 2017, Japanese, Domestic conference

  Poster presentation


• 水平加熱平板からの自然対流に及ぼす電場の影響

  川崎将嗣, 栗本遼, 南川久人, 安田孝宏

  日本機械学会関西支部第92期定時総会講演会, Mar. 2017, Japanese, Domestic conference

  Poster presentation


• エアバキュームクリーナーのエジェクター部形状が性能におよぼす影響

  中北稜, 安田孝宏, 南川久人, 栗本遼, 田島喜治, 木村泰始

  日本機械学会2016年度年次大会, Sep. 2016, Japanese, Domestic conference

  Oral presentation


• マイクロチューブ内気液二相スラグ流に関する研究（管内径と粘度による影響）

  山口裕基, 南川久人, 安田孝宏, 栗本遼

  日本機械学会関西支部第91期定時総会講演会, Mar. 2016, Japanese, Domestic conference

  Oral presentation


• マイクロバブルがホウレンソウの発芽および生育に与える影響

  藤原海, 杉本健太, 南川久人, 栗本遼, 安田孝宏

  混相流シンポジウム2015, Aug. 2015, Japanese, Domestic conference

  Oral presentation


• マイクロバブルの白濁に関する研究

  中澤健登, 南川 久人, 栗本遼, 安田孝宏

  混相流シンポジウム2015, Aug. 2015, Japanese, Domestic conference

  Oral presentation


• マイクロバブルの発生方法の違いおよび界面活性剤の有無によるゼータ電位への影響

  杉本健太, 藤原海, 南川久人, 栗本遼, 安田孝宏

  混相流シンポジウム2015, Aug. 2015, Japanese, Domestic conference

  Oral presentation


• 固体表面上を拡大する液滴に及ぼす外部電場の影響

  栗本遼, Paolo di Marco, Giacomo Saccone, 南川久人, 冨山明男

  混相流シンポジウム2015, Aug. 2015, Japanese, Domestic conference

  Oral presentation


• マイクロチューブ内気液二相スラグ流に関する研究（高粘度流体を用いた場合）

  山口裕基, 南川久人, 栗本遼, 安田孝宏

  日本機械学会関西支部第90期定時総会講演会, Mar. 2015, Japanese, Domestic conference

  Poster presentation


• 低レイノルズ数領域で用いる水中グライダーの最適な翼形状に関する研究（最適な翼前縁形状の調査）

  宮本悠治, 安田孝宏, 南川久人, 栗本遼, 里深信行

  日本機械学会流体工学部門講演会, Oct. 2014, Japanese, Domestic conference

  Oral presentation


• 非一様電場におけるオリフィスからの気泡成長

  栗本遼, Paolo di Marco, 南川久人, 林公祐, 冨山明男

  混相流シンポジウム2014, Jul. 2014, Japanese, Domestic conference

  Oral presentation


• マイクロチューブ内気液二相スラグ流の摩擦損失（ユニット・セル・モデルの適用）

  南川久人, 浅間浩明, 安田孝宏, 栗本遼

  混相流シンポジウム2014, Jul. 2014, Japanese, Domestic conference

  Oral presentation


• マイクロバブルがトマトの生育に与える影響

  藤原海, 南川久人, 上町達也, 栗本遼, 安田孝宏, 渡辺廉太郎

  混相流シンポジウム2014, Jul. 2014, Japanese, Domestic conference

  Oral presentation


• マイクロバブルによる鉛直管内流の摩擦抵抗低減効果

  坂井和正, 藤林順平, 南川久人, 安田孝宏, 栗本遼

  日本機械学会流体工学部門講演会, Nov. 2013, Japanese, Domestic conference

  Oral presentation


• Bubble growth under the action of electric forces: Experiments and numerical simulation

  Paolo Di Marco, Ryo Kurimoto, Giacomo Saccone, Akio Tomiyama

  6th Japanese-European Two-Phase Flow Group Meeting, Sep. 2012


• Numerical simulation of bubble growth under the action of electric forces

  Paolo Di Marco, Ryo Kurimoto, Giacomo Saccone, Akio Tomiyama

  50th European Two-Phase Flow Group Meeting, May 2012


• 可溶性界面活性剤の吸脱着を伴う気泡の界面追跡計算

  林公祐, 栗本遼, 冨山明男

  日本混相流学会年会講演会2011, Aug. 2011, Japanese, Domestic conference

  Oral presentation


• 鉛直円管内テイラー液滴の終端上昇速度相関式

  栗本遼, 林公祐, 冨山明男

  日本混相流学会年会講演会2010, Jul. 2010, Japanese, Domestic conference

  Oral presentation


• 鉛直円管内単一大液滴の終端上昇速度に関する研究

  吉河泰輝, 栗本遼, 林公祐, 冨山明男

  日本混相流学会年会講演会2009, Aug. 2009, Japanese, Domestic conference

  Oral presentation

• 日本混相流学会


• 日本機械学会

• 密な鉛直物体群内外における気泡流構造の解明と数値予測技術の開発

  栗本 遼

  日本学術振興会, 科学研究費助成事業 基盤研究(C), 基盤研究(C), 神戸大学, 01 Apr. 2023 - 31 Mar. 2026


• 微細粒子及び界面活性剤分散液中気泡流の流動解明と数値予測技術の開発補助事業

  栗本 遼

  公益財団法人 JKA, 2022年度 機械振興補助事業 研究補助 複数年研究, 神戸大学, 2022 - 2023


• Development of numerical method for interaction of flexible structures and bubbly flow

  Kurimoto Ryo

  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Early-Career Scientists, Grant-in-Aid for Early-Career Scientists, Kobe University, Apr. 2020 - Mar. 2022

  Numerical simulation would be useful for design and development of membrane bioreactors (MBR) in the view of visualization and prediction of flow in MBR plants. Experimental data on a relation between motion of membraned and bubbly flow are lacking, although motion of membranes should be implemented in the numerical simulation. We carried out experiments to observe bubbly flow, measure removal rate of a sludge and evaluate motion of membranes in an experimental setup with hollow fiber membranes. Liquid property affects bubble break-up at a lower tie plate and membranes. Liquid property affects the number of bubbles and those diameter in bubbly flows, since frequency of bubble break-up occurring at lower tie plate and membranes varies. This variation of the structure of bubbly flows affects removal rate attached to sludge.


• ベンドを有する円管内における気液二相環状流の液膜推移に関する研究

  栗本 遼

  公益財団法人 前川報恩会, 2019年度学術研究助成, 神戸大学, 2020


• 鉛直平行平板流路内気泡の非定常後流の解明補助事業

  栗本 遼

  公益財団法人 JKA, 2019年度 機械振興補助事業 研究補助 若手研究, 滋賀県立大学, 2019


• 微細流路混相反応器開発のための微細流路内固気液三相流の流動特性に関する研究

  栗本 遼

  公益財団法人 関西エネルギー・リサイクル科学研究振興財団, 平成28年度研究助成, 滋賀県立大学, 2017