Directory of Researchers

HAYASHI Kosuke
Graduate School of Engineering/Department of Mechanical Engineering
Associate Professor
Mechanical Engineering
Last Updated :2020/04/05

Researcher Profile and Settings

Affiliation

  • <Faculty / Graduate School / Others>

    Graduate School of Engineering/Department of Mechanical Engineering
  • <Related Faculty / Graduate School / Others>

    Faculty of Engineering/Department of Mechanical Engineering

Degree

  • Ph.D. / Doctor

Teaching

Research Activities

Research Interests

  • Computational fluid dynamics
  • Multiphase flow
  • Fluid engineering

Research Areas

  • Manufacturing technology (mechanical, electrical/electronic, chemical engineering) / Fluid engineering

Awards

  • Aug.2017, 日本混相流学会, 日本混相流学会「論文賞」, 鉛直管における気液対向流制限

    楠木 貴世志, 山本 泰功, 村瀬 道雄, HAYASHI KOSUKE, HOSOKAWA SHIGEO, TOMIYAMA AKIO

    Japan

  • May2013, 15th International Topical Meeting on Nuclear Reactor Thermalhydraulics (NURETH-15), Best Poster Award, Void Distribution and Bubble Motion in Bubbly Flows in a 4 X 4 Rod Bundle

    HOSOKAWA SHIGEO, HAYASHI KOSUKE, TOMIYAMA AKIO

    The “best” poster based on the structure of the presentation (visual quality), Italy

  • Mar.2013, 日本学術会議IUTAM分科会, 第62回理論応用力学講演会 優秀講演賞, 粘性力及び表面張力の評価法が界面運動の数値予測に及ぼす影響

    HAYASHI KOSUKE

    36歳未満の若手研究者による優秀な講演に対して授与される

  • Jul.2010, 日本混相流学会, 日本混相流学会 奨励賞, 円管内気泡及び液滴の終端上昇速度に関する研究

    HAYASHI, Kosuke

    「奨励賞」は、本会会誌または他の学術誌、あるいは本会主催・共催の国際会議論文集に掲載された論文または技術報告(原則として3年以内)を対象とし、際立った独創性、新規性、将来性などが期待され40歳以下の本会会員に贈呈する。

  • Sep.2004, 日本混相流学会, 日本混相流学会年会講演会2004 学生優秀講演賞, 改良SCAによる流体粒子の界面追跡計算

    HAYASHI KOSUKE

  • Feb.2004, 日本機械学会, 第18回計算力学講演会 学生優秀講演賞, 表面張力評価へのカーン‐ヒリヤード方程式の応用

    HAYASHI KOSUKE

Published Papers

  • Experimental Study on Interfacial and Wall Friction Factors under Counter-Current Flow Limitation in Vertical Pipes with Sharp-Edged Lower Ends

    GODA RAITO, HAYASHI KOSUKE, MURASE MICHIO, HOSOKAWA SHIGEO, TOMIYAMA AKIO

    Nov. 2019, Nuclear Engineering and Design, 353, 110223, English

    [Refereed]

    Research paper (scientific journal)

  • Drag Correlations of Ellipsoidal Bubbles in Clean and Fully-Contaminated Systems

    CHEN JUNMING, HAYASHI KOSUKE, HOSOKAWA SHIGEO, TOMIYAMA AKIO

    Sep. 2019, Multiphase Science and Technology, 31 (3), 215 - 234, English

    [Refereed]

    Research paper (scientific journal)

  • Viscous Stress and Pressure Acting on Interface of Contaminated Drop

    HOSOKAWA SHIGEO, SHIGEKANE GAKU, HAYASHI KOSUKE, TOMIYAMA AKIO

    May 2019, 10th International Conference on Multiphase Flow (ICMF2019), 2 pages, English

    [Refereed]

    Research paper (international conference proceedings)

  • Numerical Simulations of Flows in Cerebral Aneurysms Using the Lattice Boltzmann Method with Single- and Multiple-Relaxation Time Collision Models

    OSAKI SUSUMU, HAYASHI KOSUKE, KIMURA HIDEHITO, SETA TAKESHI, KOHMURA EIJI, TOMIYAMA AKIO

    May 2019, Computers & Mathematics with Applications, 78, 2746 - 2760, English

    [Refereed]

    Research paper (scientific journal)

  • Effects of Surfactant on Bubble Breakup at T-Junction and Characteristics of Taylor Flows in Mini and Micro Channels

    HAYASHI KOSUKE, SUZUKI DAIKI, KURIMOTO RYO, HOSOKAWA SHIGEO, TOMIYAMA AKIO

    May 2019, 10th International Conference on Multiphase Flow (ICMF2019), 2 pages, English

    [Refereed]

    Research paper (international conference proceedings)

  • Effects of Initial Liquid Height on Gas Holdup in an Air-Water Bubble Column

    KOBAYASHI NOBUYA, HASHIDA MASAAKI, HAYASHI KOSUKE, MARASHDEH QUSSAI, TOMIYAMA AKIO

    May 2019, 10th International Conference on Multiphase Flow (ICMF2019), 6 pages, English

    [Refereed]

    Research paper (international conference proceedings)

  • Combined Effects of Surfactant and Electrolyte on Mass Transfer from Single Carbon-Dioxide Bubbles in Vertical Pipes

    HORI YOHEI, BOTHE DIETER, HAYASHI KOSUKE, HOSOKAWA SHIGEO, TOMIYAMA AKIO

    May 2019, 10th International Conference on Multiphase Flow (ICMF2019), 9 pages, English

    [Refereed]

    Research paper (international conference proceedings)

  • Characterization of Velocity Field External to Tube Bundle Using Spatial Filter Velocimetry based on Variable Meshing Scheme

    ROCHA DOUGLAS, KANIZAWA FABIO, HAYASHI KOSUKE, HOSOKAWA SHIGEO, TOMIYAMA AKIO, RIBATSKI GHERHARDT

    May 2019, 10th International Conference on Multiphase Flow (ICMF2019), 9 pages, English

    [Refereed]

    Research paper (international conference proceedings)

  • Hydrodynamic Sound Generated by Bubble Collapse in Subcooled Liquid Flow

    HAYASHI KOSUKE, HOSOKAWA SHIGEO, TOMIYAMA AKIO

    Mar. 2019, Multiphase Science and Technology, 31 (1), 61 - 71, English

    [Refereed]

    Research paper (scientific journal)

  • Rise Velocities of Single Bubbles in a Narrow Channel between Parallel Flat Plates

    HASHIDA MASAAKI, HAYASHI KOSUKE, TOMIYAMA AKIO

    Feb. 2019, Internation Journal of Multiphase Flow, 111, 285 - 293, English

    [Refereed]

    Research paper (scientific journal)

  • Experiments on Removal of Hydrophilic Fine Particles in Bubbly Flow

    KAWABATA MASATOSHI, TSUKAGUCHI YUICHI, KANG JYUNGYU, HAYASHI KOSUKE, TOMIYAMA AKIO

    Feb. 2019, ISIJ International, 59 (2), 209 - 215, English

    [Refereed]

    Research paper (scientific journal)

  • Detection of Hemodynamic Characteristics Before Growth in Growing Cerebral Aneurysms by Analyzing Time-of-Flight Magnetic Resonance Angiography Images Alone: Preliminary Results

    KIMURA HIDEHITO, HAYASHI KOSUKE, TANIGUCHI MASAAKI, HOSODA KOHKICHI, FUJITA ATSUSHI, SETA TAKESHI, TOMIYAMA AKIO, KOHMURA EIJI

    Feb. 2019, World Neurosurgery, 122, e1439 - e1448, English

    [Refereed]

    Research paper (scientific journal)

  • Clear Detection of Thin-Walled Regions in Unruptured Cerebral Aneurysms by Using Computational Fluid Dynamics

    KIMURA HIDEHITO, TANIGUCHI MASAAKI, HAYASHI KOSUKE, FUJIMOTO YOSUKE, FUJITA ATSUSHI, SASAYAMA TAKASHI, TOMIYAMA AKIO, KOHMURA EIJI

    Jan. 2019, World Neurosurgery, 121, e287 - e295, English

    [Refereed]

    Research paper (scientific journal)

  • Numerical Investigation of Bubble Shape and Flow Filed of Gas–Liquid Slug Flow in Circular Microchannels

    KURIMOTO RYO, HAYASHI KOSUKE, MINAGAWA HISATO, TOMIYAMA AKIO

    Dec. 2018, International Journal of Heat and Fluid Flow, 74, 28 - 35, English

    [Refereed]

    Research paper (scientific journal)

  • Shapes of Single Bubbles in Infinite Stagnant Liquids Contaminated with Surfactant

    AOYAMA SHOHEI, HAYASHI KOSUKE, HOSOKAWA SHIGEO, TOMIYAMA AKIO

    Sep. 2018, Experimental Thermal and Fluid Science, 96, 460 - 469, English

    [Refereed]

    Research paper (scientific journal)

  • Evaluation of Adsorption of Surfactant at a Moving Interface of a Single Spherical Drop

    HOSOKAWA SHIGEO, HAYASHI KOSUKE, TOMIYAMA AKIO

    Elsevier, Sep. 2018, Experimental Thermal and Fluid Science, 96, 397 - 405, English

    [Refereed]

    Research paper (scientific journal)

  • On CCFL at a PWR Hot-Leg Pipe Geometry and Comparison Between Results in COLLIDER 1/4th- and Kobe 1/15th-Scaled Facilities

    AL ISSA SULEIMAN, MURASE MICHIO, TOMIYAMA AKIO, HAYASHI KOSUKE, MACIAN-JUAN RAFAEL

    Aug. 2018, Nuclear Science and Engineering, 193, 147 - 159, English

    [Refereed][Invited]

    Research paper (scientific journal)

  • Diagnostics of flow about a contaminated single drop using spatiotemporal filter velocimetry

    HOSOKAWA SHIGEO, SHIGEKANE GAKU, HAYASHI KOSUKE, TOMIYAMA AKIO

    Jul. 2018, 19th Symposium on Applications of Laser and Imaging Techniques to Fluid Mechanics, Lisbon 2016, English

    [Refereed]

    Research paper (international conference proceedings)

  • Wall and Interfacial Shear Stress of Swirling Annular Flow

    FUNAHASHI HAYATO, HAYASHI KOSUKE, HOSOKAWA SHIGEO, TOMIYAMA AKIO

    Apr. 2018, 8th European-Japanese Twp-Phase Flow Group Meeting, EJTPFGM-8, 1, English

    [Refereed]

    Research paper (international conference proceedings)

  • Numerical Simulation of a Drop in Contaminated Systems from low concentration to CMC

    HAYASHI KOSUKE, HOSOKAWA SHIGEO, TOMIYAMA AKIO

    Apr. 2018, 8th European-Japanese Twp-Phase Flow Group Meeting, EJTPFGM-8, 1, English

    [Refereed]

    Research paper (international conference proceedings)

  • Interfacial and wall friction factors of swirling annular flow in a vertical pipe

    FUNAHASHI HAYATO, VIEROW KIRKLAND KAREN, HAYASHI KOSUKE, HOSOKAWA SHIGEO, TOMIYAMA AKIO

    Apr. 2018, Nuclear Engineering and Design, 330, 97 - 105, English

    [Refereed]

    Research paper (scientific journal)

  • Semi-Empirical Correlation for Counter-Current Flow Limitation at the Upper or Lower End of Vertical Pipes

    GODA RAITO, HAYASHI KOSUKE, VIEROW KIRKLAND KAREN, MURASE MICHIO, TOMIYAMA AKIO

    Mar. 2018, Nuclear Engineering and Design, 328, 182 - 187, English

    [Refereed]

    Research paper (scientific journal)

  • Analytical and Numerical Studies of the Boundary Slip in the Immersed Boundary-Thermal Lattice Boltzmann Method

    SETA TAKESHI, HAYASHI KOSUKE, TOMIYAMA AKIO

    Mar. 2018, International Journal of Numerical Methods in Fluids, 86, 454 - 490, English

    [Refereed]

    Research paper (scientific journal)

  • Effects of Surfactant on Lift Coefficients of Bubbles in Linear Shear Flows

    HAYASHI KOSUKE, TOMIYAMA AKIO

    Feb. 2018, International Journal of Multiphase Flow, 99, 86 - 93, English

    [Refereed]

    Research paper (scientific journal)

  • Effects of Azimuthal Angle of Aeration Hole and Liquid Viscosity on Flows Inside and Outside an Air Diffuser Pipe

    SATO RYO, HAYASHI KOSUKE, TOMIYAMA AKIO

    Jan. 2018, Kagaku Kogaku Ronbunshu, 44 (1), 59 - 66, Japanese

    [Refereed]

    Research paper (scientific journal)

  • Mass transfer from single carbon-dioxide bubbles in electrolyte aqueous solutions in vertical pipes

    Yohei Hori, Kosuke Hayashi, Shigeo Hosokawa, Akio Tomiyama

    Mass transfer rates, k(L), of single carbon-dioxide (CO2) bubbles rising through vertical pipes filled with electrolyte aqueous solutions were measured to investigate the effects of the presence of electrolyte on k(L) Sodium chloride (NaCI) was used for electrolyte and its concentration was varied from 3.5 to 14 wt.%. The pipe diameters, D, were 12.5, 18.2 and 25.0 mm and the bubble diameter, d, ranged from 5 to 25 mm. The diameter ratio, lambda(= d/D), was varied from 0.2 to 1.7, to cover various bubble shapes, i.e. ellipsoidal, cap, semi-Taylor bubbles and Taylor bubbles. The conclusions obtained are as follows: (1) k(L) in the NaCI aqueous solutions decreases with increasing the NaCI concentration mainly due to the reduction of the diffusion coefficient of CO2 in the liquid phase, (2) the Sherwood numbers, Sh, of Taylor bubbles of L/D > 1 in the NaCI aqueous solutions can be well evaluated using the available Sherwood number correlation for clean Taylor bubbles, where L is the length of a Taylor bubble, (3) Sh of ellipsoidal, cap, semi-Taylor bubbles and Taylor bubbles of LID <= 1 in the clean water and NaCI aqueous solutions can be well correlated in terms of the Peclet number and the dimensionless bubble diameter d* = d/d(T), where d(T) is the bubble diameter at the transition from the ellipsoidal-cap bubble regime to the semi-Taylor bubble regime, and (4) the Sh correlations give good predictions for long-term bubble dissolution processes in NaCI aqueous solutions. (c) 2017 Elsevier Ltd. All rights reserved.

    PERGAMON-ELSEVIER SCIENCE LTD, Dec. 2017, INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 115, 663 - 671, English

    [Refereed]

    Research paper (scientific journal)

  • Experimental Evaluation of Marangoni stress and surfactant concentration at interface of contaminated single drops using spatiotemporal filter velocimetry

    HOSOKAWA SHIGEO, MASUKURA YUYA, HAYASHI KOSUKE, TOMIYAMA AKIO

    Dec. 2017, International Journal of Multiphase Flow, 97, 157 - 167, English

    [Refereed]

    Research paper (scientific journal)

  • Evaluation of Adsorption of Surfactant at a Drop Interface using Spatiotemporal Filter Velocimetry

    HOSOKAWA SHIGEO, OKAMOTO RYOTA, HAYASHI KOSUKE, TOMIYAMA AKIO

    Dec. 2017, 10th International Symposium on Measurement Techniques for Multiphase Flow (ISMTMF2017), English

    [Refereed]

    Research paper (international conference proceedings)

  • Effects of azimuthal angle of aeration hole on flows inside and outside an air diffuser pipe

    Ryo Sato, Tatsuya Miyayoshi, Kosuke Hayashi, Akio Tomiyama

    Experiments on aeration from a bubble diffuser pipe having five aeration holes are carried out to investigate effects of the azimuthal angle of the holes on flows inside and outside the pipe. The azimuthal angle is varied by rotating the pipe. When the hole angle becomes larger than a certain angle, the liquid height inside the pipe is fixed just below the holes, which results in the prevention of slugging inside the pipe. The effects of hole angle on bubble generation mode and bubble size are small except for the large hole angles, at which generated bubbles are to break up due to an interaction between the bubbles and the pipe wall. Hence uniform aeration is easily realized just by rotating the pipe to some extent. Uniform aeration is also realized with a longer diffuser pipe having ten aeration holes by rotating the pipe. The power in aeration is evaluated from the pressure difference and the total gas inflow. Although the decrease in the hole diameter is also effective to realize the uniform aeration, the increase in the azimuthal angle is superior to the former from the point of view of energy saving.

    ELSEVIER SCIENCE INC, Dec. 2017, EXPERIMENTAL THERMAL AND FLUID SCIENCE, 89, 90 - 97, English

    [Refereed]

    Research paper (scientific journal)

  • Spatiotemporal Flow Structure of Counter-Current Two-Phase Annular Flows

    GODA RAITO, KATSUYA MORI, HAYASHI KOSUKE, HOSOKAWA SHIGEO, TOMIYAMA AKIO

    Nov. 2017, ANS Winter Meeting and Nuclear Technology Expo, 2 pages, English

    [Refereed]

    Research paper (international conference proceedings)

  • Lift force acting on single bubbles in linear shear flows

    S. Aoyama, K. Hayashi, S. Hosokawa, D. Lucas, A. Tomiyama

    Lift coefficients, C-L, of single bubbles in linear shear flows are measured to investigate effects of the bubble shape, the liquid velocity gradient and the fluid property on C-L. The range of the Morton number, M, tested is from logM = -6.6 to -3.2. The shapes of bubbles are spherical and ellipsoidal. A correlation of bubble aspect ratio for single bubbles in infinite stagnant liquids proposed in our previous study can give good evaluations for bubbles in the linear shear flows. The C-L of spherical bubbles at low bubble Reynolds numbers, Re, depend on the dimensionless shear rate Sr and Re and decrease with increasing Re. These characteristics agree with the Legendre-Magnaudet correlation. The use of a single dimensionless group such as Re, the Eotvos number, the Weber number and the Capillary number cannot correlate C-L of non-spherical bubbles. The trend of the critical Re for the reversal of the sign of C-L is the same as that for the onset of oscillation of bubble motion, which supports the mechanism proposed by Adoua et al., at least within the range of -6.6 <= logM <= -3.2. An experimental database of C-L is provided for validation of available C-L models and CFD. (C) 2017 Elsevier Ltd. All rights reserved.

    PERGAMON-ELSEVIER SCIENCE LTD, Nov. 2017, INTERNATIONAL JOURNAL OF MULTIPHASE FLOW, 96, 113 - 122, English

    [Refereed]

    Research paper (scientific journal)

  • Improvement of separator performance with modified pick-off ring and swirler

    H. Funahashi, K. Hayashi, S. Hosokawa, A. Tomiyama

    The swirler and the 1st pick-off ring (POR) of a gas-liquid separator are improved to reduce the pressure drop, DPT, in the separator while keeping the flow rate of separated liquid, WST, high. Two swirler designs are presented, i.e. V8 (swirler with eight vanes) and V6 (swirler with six vanes), whose diameters of the hubs supporting the vanes are smaller than that of the normal swirler, N8, and the nose shape of vanes are coned. The swirlers are installed into a one-fifth scale separator with three PORs. The gap width of the 1st POR is reduced to the value of the liquid film thickness in the barrel of the separator and the rear shape of the 1st POR is smoothed. The performance of the downscaled separator with the proposed swirlers and the 1st POR are evaluated under the nominal operating condition of the Hyper BWR and a higher quality condition. As a result, the following conclusions are obtained in the present experimental range: (1) DPT in the separator is reduced by 23% using V8, and V8 gives the same WST as N8, confirming that the decrease in the hub diameter and the coned-nose shape of vanes are effective, (2) V6 can realize further reduction of DPT (38%) without deteriorating the liquid-separation rate, (3) the reduced gap width of the 1st POR and a tapered shape of the downstream side of the 1st POR are also effective to decrease the pressure drop, i.e. the improved POR decreases DPT by 42% and 54% by combining with V8 and V6, respectively, and (4) the improved separators also show good performances in DPT and WST at the higher quality condition. (C) 2017 Elsevier B.V. All rights reserved.

    ELSEVIER SCIENCE SA, Oct. 2017, NUCLEAR ENGINEERING AND DESIGN, 322, 360 - 367, English

    [Refereed]

    Research paper (scientific journal)

  • On CCFL in Collider Test Facility: CCFL Results at PWR Hot-Leg Pipe Geometry with 190 mm Diameter

    AL ISSA SULEIMAN, MURASE MICHIO, TOMIYAMA AKIO, HAYASHI KOSUKE, MACIAN-JUAN RAFAEL

    Sep. 2017, 17th International Topical Meeting on Nuclear Reactor Thermal Hydraulics(NURETH-17), 14 pages, English

    [Refereed]

    Research paper (international conference proceedings)

  • 鉛直管内での気液対向流に対する界面摩擦係数

    KUSUNOKI KIYOSHI, YAMAMOTO YASUNORI, MURASE MICHIO, HAYASHI KOSUKE, HOSOKAWA SHIGEO, TOMIYAMA AKIO

    Jun. 2017, 混相流, 31 (1), 37 - 46, Japanese

    [Refereed]

    Research paper (scientific journal)

  • 鉛直管での気液対向流制限に対する流体物性の影響

    MURASE MICHIO, KUSUNOKI KIYOSHI, YAMAMOTO YASUNORI, GODA RAITO, HAYASHI KOSUKE, HOSOKAWA SHIGEO, TOMIYAMA AKIO

    Jun. 2017, 混相流, 31 (2), 152 - 161, Japanese

    [Refereed]

    Research paper (scientific journal)

  • Terminal Velocities of Single Bubble Rising through Stagnant Liquids and Slurry in a Hele-Shaw Cell

    HASHIDA MASAAKI, HAYASHI KOSUKE, TOMIYAMA AKIO

    Jun. 2017, 9th World Conference on Experimental Heat Transfer, Fluid Mechanics and Thermodynamic (ExHFT-9), 9 pages, English

    [Refereed]

    Research paper (international conference proceedings)

  • Pressure Drop in Air-Water Two-Phase Flows in Horizontal U-Bends

    HAYASHI KOSUKE, SUZUKI DAIKI, MIYACHI NAOTO, HOSOKAWA SHIGEO, TOMIYAMA AKIO

    Jun. 2017, 9th World Conference on Experimental Heat Transfer, Fluid Mechanics and Thermodynamic (ExHFT-9), 8 pages, English

    [Refereed]

    Research paper (international conference proceedings)

  • Evaluation of Adsorption of Surfactant at a Moving Interface of a Single Spherical Drop

    HOSOKAWA SHIGEO, OKAMOTO RYOTA, HAYASHI KOSUKE, TOMIYAMA AKIO

    Jun. 2017, 9th World Conference on Experimental Heat Transfer, Fluid Mechanics and Thermodynamic (ExHFT-9), 10 pages, English

    [Refereed]

    Research paper (international conference proceedings)

  • Mass transfer from single carbon dioxide bubbles in alcohol aqueous solutions in vertical pipes

    Jiro Aoki, Yohei Hori, Kosuke Hayashi, Shigeo Hosokawa, Akio Tomiyama

    Mass transfer rates, k(L), of single carbon dioxide bubbles contaminated with alcohols in vertical pipes of 12.5, 18.2 and 25.0 mm diameters were measured to investigate effects of the carbon chain length of the alcohols on kL. Four straight-chain alcohols, i.e. 1-pentanol, 1-heptanol, 1-octanol and 1-decanol, were used. A wide range of bubble diameter, d, covered ellipsoidal and Taylor bubbles. Effects of the alcohol concentration, C-sol, on k(L) were also investigated to make clear the values of C-sol corresponding to fully contaminated conditions. As a result, the following conclusions were obtained. (1) The kL of bubbles contaminated with alcohols decrease with increasing C-sol, and they become constant at high C-sol, i.e. bubbles in the latter C-sol ranges are fully-contaminated from the point of view of mass transfer. On the other hand, the rising velocities decrease with increasing C-sol due to the reduction of surface tension even when k(L) are independent of Cob (2) The k(L). of ellipsoidal bubbles fully-contaminated with alcohols decrease with increasing the carbon chain length, whereas the reduction rate of kL becomes smaller and smaller as the carbon chain length increases. The k(L). of fully-contaminated ellipsoidal bubbles can be expressed by accounting for the adsorption constant of alcohol in an available kL correlation. (3) The increase in the carbon chain length also decreases k(L) of fully-contaminated Taylor bubbles, whereas the effect of carbon chain length on k(L), becomes smaller with increasing d. (C) 2017 Elsevier Ltd. All rights reserved.

    PERGAMON-ELSEVIER SCIENCE LTD, May 2017, INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 108 (Part B), 1991 - 2001, English

    [Refereed]

    Research paper (scientific journal)

  • Effects of electrolyte on mass transfer from single carbon-dioxide bubbles in vertical pipes

    HORI YOHEI, HAYASHI KOSUKE, HOSOKAWA SHIGEO, TOMIYAMA AKIO

    May 2017, Third International Symposium on Multiscale Multiphase Process Engineering (MMPE2017), 6 pages, English

    [Refereed]

    Research paper (international conference proceedings)

  • Experimental Investigation of Temperature Distribution in Condensing Steam-Air Flow in a Circular Tube

    MORI KATSUYA, HAYASHI KOSUKE, HOSOKAWA SHIGEO, TOMIYAMA AKIO, UTANOHARA YOICHI, YAMAMOTO YASUNORI, MURASE MICHIO

    Apr. 2017, 2017 International Congress on Advances in Nuclear Power Plants (ICAPP 2017), English

    [Refereed]

    Research paper (international conference proceedings)

  • Effects of column diameter and liquid height on gas holdup in air-water bubble columns

    Shohei Sasaki, Kengo Uchida, Kosuke Hayashi, Akio Tomiyama

    Experiments on the total gas holdup, alpha(G), in air-water cylindrical bubble columns were carried out to investigate effects of the column diameter, D-H, and the initial liquid height, H-0, on alpha(G). Ranges of D-H and H-0 were 160 <= D-H <= 2000 mm and 400 <= H-0 <= 4000 mm, respectively. The superficial gas velocity, J(G), was varied from 0.025 to 0.35 m/s. The characteristics of gas holdup showed that all the flows in the present experiments were pure heterogeneous. The following conclusions were obtained for alpha(G) in air-water bubble columns: (1) the effects of D-H and H-0 on alpha(G) are negligible when scaling up from small to large bubble columns, provided that alpha(G) in the small columns are obtained for D-H >= 200 mm and Ho 2200 mm. The height-to-diameter ratio is useless in evaluation of the critical height, above which aG does not depend on H-0, (2) for the above ranges of D-H and H-0, Akita-Yoshida's and Koide's correlations can give good evaluations of alpha(G) for a wide range of J(G) by tuning the model constants, (3) for D-H < 200 mm, the decrease in D-H increases the population of large bubbles, which results in the decrease in alpha(G), and (4) for H-0 less than or similar to 2200 mm and D-H >= 200 mm, alpha(G) at a constant J(G) decreases with increasing H-0 and approaches an asymptotic value, and the Froude number using J(G) and H-0 as the characteristic scales well correlates alpha(G) in this regime. (C) 2016 Elsevier Inc. All rights reserved.

    ELSEVIER SCIENCE INC, Apr. 2017, EXPERIMENTAL THERMAL AND FLUID SCIENCE, 82, 359 - 366, English

    [Refereed]

    Research paper (scientific journal)

  • Interfacial Friction Factor for Counter-Current Gas-Liquid Flows in Vertical Pipes

    KUSUNOKI TAKAYOSHI, YAMAMOTO YASUNORI, MURASE MICHIO, HAYASHI KOSUKE, HOSOKAWA SHIGEO, TOMIYAMA AKIO

    日本混相流学会, Mar. 2017, 混相流, 31 (1), 37 - 46, Japanese

    [Refereed]

    Research paper (scientific journal)

  • 鉛直管内における気液対向流制限

    YAMAMOTO YASUNORI, MURASE MICHIO, HAYASHI KOSUKE, HOSOKAWA SHIGEO, TOMIYAMA AKIO

    Dec. 2016, 混相流, 30 (4), 392 - 401, Japanese

    [Refereed]

    Research paper (scientific journal)

  • Study on Two-Phase Swirling Flows in a Gas-Liquid Separator with Three Pick-off Rings

    FUNAHASHI HAYATO, HAYASHI KOSUKE, HOSOKAWA SHIGEO, TOMIYAMA AKIO

    Nov. 2016, Nuclear Engineering and Design, 308, 205 - 213, English

    [Refereed]

    Research paper (scientific journal)

  • Effects of Particle Concentration and Slurry Height on Gas Holdup in a Slurry Bubble Column

    SHOHEI SASAKI, KENGO UCHIDA, HAYASHI KOSUKE, TOMIYAMA AKIO

    Nov. 2016, Journal of Chemical Engineering of Japan, 49 (9), 824 - 830, English

    [Refereed]

    Research paper (scientific journal)

  • A Semi-Empirical Correlation for Counter-Current Flow Limitation in a Vertical Pipe

    MORI KATSUYA, HAYASHI KOSUKE, HOSOKAWA SHIGEO, TOMIYAMA AKIO

    Nov. 2016, ANS Conference 2016 Winter Meeting and Nuclear Technology Expo, 3 pages, English

    [Refereed]

    Research paper (international conference proceedings)

  • Effects of Subcooling on Sound Generation by Vapor Bubbles in Water

    HAYASHI KOSUKE, TATEYAMA MASAYA, IKEUCHI KAZUTAKA, HOSOKAWA SHIGEO, TOMIYAMA AKIO, HIROTSU MAKOTO, TAKEDA NOBUHIRO

    Jun. 2016, Multiphase Science and Technology, 27 (1), 67 - 75, English

    [Refereed]

    Research paper (scientific journal)

  • Numerical Simulation of Surfactant Concentration at an Interface of Single Spherical Drop

    HAYASHI KOSUKE, MASUKURA YUYA, HOSOKAWA SHIGEO, TOMIYAMA AKIO

    May 2016, 9th International Conference on Multiphase Flow, No. 262, 6 pages, English

    [Refereed]

    Research paper (international conference proceedings)

  • Mass Transfer from Single Carbon Dioxide Bubbles in Water-Alchol Solutions in a Verical Pipe

    HORI YOHEI, AOKI JIRO, HAYASHI KOSUKE, HOSOKAWA SHIGEO, TOMIYAMA AKIO

    May 2016, 9th International Conference on Multiphase Flow, No. 245, 6 pages, English

    [Refereed]

    Research paper (international conference proceedings)

  • Lift Force Acting on Single Bubbles in Linear Shear Flows

    AOYAMA SHOHEI, ZUN IZTOK, HAYASHI KOSUKE, HOSOKAWA SHIGEO, TOMIYAMA AKIO

    May 2016, 9th International Conference on Multiphase Flow, No. 333, 6 pages, English

    [Refereed]

    Research paper (international conference proceedings)

  • Experimental Evaluation of Surfacant Concentration at an Interface of Single Spherical Drop

    HOSOKAWA SHIGEO, MASUKURA YUYA, HAYASHI KOSUKE, TOMIYAMA AKIO

    May 2016, 9th International Conference on Multiphase Flow, No. 262, 6 pages, English

    [Refereed]

    Research paper (international conference proceedings)

  • Effects of Azimuthal Angle of Aeration Holes on Flows inside and outside a Bubble Diffuser Pipe

    SATO RYO, MIYAYOSHI TATSUYA, HAYASHI KOSUKE, TOMIYAMA AKIO

    May 2016, 9th International Conference on Multiphase Flow, No. 168, 6 pages, English

    [Refereed]

    Research paper (international conference proceedings)

  • Effects of Liquid Height on Gas Holdup in Air–Water Bubble Column

    SASAKI SHOHEI, HAYASHI KOSUKE, TOMIYAMA AKIO

    Apr. 2016, Experimental Thermal and Fluid Science, 72, 67 - 74, English

    [Refereed]

    Research paper (scientific journal)

  • Shapes of Ellipsoidal Bubbles in Infinite Stagnant Liquids

    AOYAMA SHOHEI, HAYASHI KOSUKE, HOSOKAWA SHIGEO, TOMIYAMA AKIO

    Mar. 2016, International Journal of Multiphase Flow, 79, 23 - 30, English

    [Refereed]

    Research paper (scientific journal)

  • Effects of Liquid-Separation Components on Separation Performance of a Steam Separator

    KATONO KENICHI, TAMARU HAYATO, HOSOKAWA SHIGEO, HAYASHI KOSUKE, TOMIYAMA AKIO

    Dec. 2015, Japanese journal of Multiphase Flow, 29 (4), 343 - 350, Japanese

    [Refereed]

    Research paper (scientific journal)

  • Two-Phase Swirling Flow in a Gas-Liquid Separator

    FUNAHASHI HAYATO, HAYASHI KOSUKE, HOSOKAWA SHIGEO, TOMIYAMA AKIO

    Nov. 2015, ANS Conference 2015 Winter Meeting and Nuclear Technology Expo, 2 pages, English

    [Refereed]

    Research paper (international conference proceedings)

  • Effects of Surfactants on Mass Transfer from Single Carbon Dioxide Bubbles in Vertical Pipes

    AOKI JIRO, HAYASHI KOSUKE, HOSOKAWA SHIGEO, TOMIYAMA AKIO

    Nov. 2015, Chemical Engineering and Technology, 38 (11), 1955 - 1964, English

    [Refereed][Invited]

    Research paper (scientific journal)

  • Evaluation of Interfacial Shear Stress of Single Drop Using Spatiotemporal Filter Velocimetry

    HOSOKAWA SHIGEO, MASUKURA Yuya, HAYASHI KOSUKE, TOMIYAMA AKIO

    Oct. 2015, 7th European-Japanese Two-Phase Flow Group Meeting, 3 pages, English

    [Refereed]

    Research paper (international conference proceedings)

  • Effects of Subcooling on Sound Generation by Vapor Bubbles in Water

    HAYASHI KOSUKE, TATEYAMA MASAYA, IKEUCHI KAZUTAKA, HOSOKAWA SHIGEO, TOMIYAMA AKIO, HIROTSU MAKOTO, TAKEDA NOBUHIRO

    Oct. 2015, 7th European-Japanese Two-Phase Flow Group Meeting, 9 pages, English

    [Refereed][Invited]

    Research paper (international conference proceedings)

  • Effects of Liquid Viscosity on Flows inside and outside a Bubble Diffuser Pipe

    SATO RYO, HAYASHI KOSUKE, TOMIYAMA AKIO

    Sep. 2015, Experimental Thermal and Fluid Science, 66, 197 - 205, English

    [Refereed]

    Research paper (scientific journal)

  • Effects of Liquid Height on Gas Holdup in a Rectangular Bubble Column

    SASAKI SHOHEI, HAYASHI KOSUKE, TOMIYAMA AKIO

    Sep. 2015, 9th International Symposium on Measurement Techniques for Multiphase Flow, 2 pages, English

    [Refereed]

    Research paper (international conference proceedings)

  • Motion of Contaminated Drops Falling onto Flat Plate

    HAYASHI KOSUKE, KITANO MASAAKI, DHAR ABHINAV, TOMIYAMA AKIO

    Jul. 2015, ASME-JSME-KSME Joint Fluids Engineering Conference 2015 (AJK2015-FED), AJK2015 - 21048, 2 pages, English

    [Refereed]

    Research paper (international conference proceedings)

  • Condensation Experiments for Counter-Current Flow Limitation in an Inverted U-Tube

    KUSUNOKI TAKAYOSHI, NOZUE TAKAHIRO, HAYASHI KOSUKE, HOSOKAWA SHIGEO, TOMIYAMA AKIO, MURASE MICHIO

    Jul. 2015, Journal of Nuclear Science and Technology, English

    [Refereed]

    Research paper (scientific journal)

  • Implicit Temperature-Correction-based Immersed-Boundary Thermal Lattice-Boltzmann Method with Two Relaxation Times

    SETA TAKESHI, HAYASHI KOSUKE, TOMIYAMA AKIO

    May 2015, 23th International Conference on Nuclear Engineering (ICONE23), 10 pages, ICONE23 - 1039, English

    [Refereed]

    Research paper (international conference proceedings)

  • Mass Transfer from Single Carbon Dioxide Bubbles in Contaminated Water in a Vertical Pipe

    AOKI JIRO, HAYASHI KOSUKE, TOMIYAMA AKIO

    Apr. 2015, International Journal of Heat and Mass Transfer, 83, 652–658, English

    [Refereed]

    Research paper (scientific journal)

  • Effects of Fluid Properties on CCFL Characteristics at a Vertical Pipe Lower End

    KUSUNOKI TAKAYOSHI, MURASE MICHIO, FUJII YUKI, NOZUE TAKAHIRO, HAYASHI KOSUKE, HOSOKAWA SHIGEO, TOMIYAMA AKIO

    Apr. 2015, Journal of Nuclear Science and Technology, 52 (6), 887 - 896, English

    [Refereed]

    Research paper (scientific journal)

  • Effects of Particle Diameter on Bubble Coalescence in a Slurry Bubble Column

    OJIMA SHIMPEI, SASAKI SHOHEI, HAYASHI KOSUKE, TOMIYAMA AKIO

    Mar. 2015, Journal of Chemical Engineering of Japan, 48 (3), 181 - 189, English

    [Refereed]

    Research paper (scientific journal)

  • Assessment of Numerical Treatments in Interface Capturing Simulations for Surface-tension-driven Interface Motion

    DHAR ABHINAV, SHIMADA NAOKI, HAYASHI KOSUKE, TOMIYAMA AKIO

    Mar. 2015, Journal of Computational Multiphase Flows, 7 (1), 15 - 32, English

    [Refereed]

    Research paper (scientific journal)

  • Distributions of void fraction and liquid velocity in air-water bubble column

    Shimpei Ojima, Kosuke Hayashi, Shigeo Hosokawa, Akio Tomiyama

    Multi-fluid simulations of heterogeneous bubbly flows in an air-water bubble column were carried out to verify the speculation that a heterogeneous bubbly flow is predictable without turbulence models such as k-epsilon and LES models, provided that the velocity fluctuation caused by large-scale vortical flow structures prevails over the bubble-induced and shear-induced turbulences. Experiments on the heterogeneous air-water bubbly flows in a rectangular bubble column were also carried out to obtain experimental data of the mean velocity, fluctuation velocity and void fraction for validation of the numerical method. A small LDV probe developed in our previous study was utilized to measure the liquid velocity in the column at high spatial and high temporal resolutions. The distribution of void fraction was measured using an electrical conductivity probe. The conclusions obtained under the present experimental conditions are as follows: (1) the small LDV probe is of great use in measuring the distributions of mean and fluctuation velocities of the liquid phase at high spatial and high temporal resolutions, (2) the velocity fluctuation in the heterogeneous regime in the bubble column is mainly due to large-scale vortical structures, and (3) the multi-fluid model can give good predictions of a heterogeneous bubbly flow without using the turbulence models, provided that large-scale vortical structures in the flow prevail over the bubble-induced and shear-induced turbulences. (C) 2014 Elsevier Ltd. All rights reserved.

    PERGAMON-ELSEVIER SCIENCE LTD, Dec. 2014, INTERNATIONAL JOURNAL OF MULTIPHASE FLOW, 67, 111 - 121, English

    [Refereed]

    Research paper (scientific journal)

  • CCFL of Steam-Condensate Two-Phase Flow in a U-Tube

    NOZUE TAKAHIRO, FUJII YUKI, MURASE MICHIO, HAYASHI KOSUKE, HOSOKAWA SHIGEO, TOMIYAMA AKIO

    Nov. 2014, ANS Conference 2014 Winter Meeting and Nuclear Technology Expo, CD-ROM, 2 pages, English

    [Refereed]

    Research paper (international conference proceedings)

  • Effects of Surfactant on Mass Transfer from Single Carbon Dioxide Bubbles in Vertical Pipes

    AOKI JIRO, HAYASHI KOSUKE, HOSOKAWA SHIGEO, TOMIYAMA AKIO

    Sep. 2014, Proc. 2nd International Symposium on Multiscale Multiphase Process Engineering, pp. 94 - 99, English

    [Refereed]

    Research paper (international conference proceedings)

  • Effects of Height-To-Diameter Ratio on Gas Holdup in a Slurry Bubble Column

    SASAKI SHOHEI, OJIMA SHIMPEI, HAYASHI KOSUKE, TOMIYAMA AKIO

    Sep. 2014, Proc. 2nd International Symposium on Multiscale Multiphase Process Engineering, pp. 230 - 235, English

    [Refereed]

    Research paper (international conference proceedings)

  • An Interface Capturing Scheme for Free-Surface Flows in a Flow Channel Consisting of Solid Obstacles

    SHIMADA NAOKI, DHAR ABHINAV, HAYASHI KOSUKE, TOMIYAMA AKIO

    Sep. 2014, Proc. 2nd International Symposium on Multiscale Multiphase Process Engineering, pp. 106 - 115, English

    [Refereed]

    Research paper (international conference proceedings)

  • Mass Transfer from Single Carbon Dioxide Bubbles in Contaminated Water

    AOKI JIRO, HAYASHI KOSUKE, HOSODA SHOGO, HOSOKAWA SHIGEO, TOMIYAMA AKIO

    Aug. 2014, ASME 2014 4th joint US-European Fluids Engineering Division Summer Meeting and 11th International Conference on Nanochannels, Microchannels, and Minichannels, FEDSM2014, FEDSM2014 - 21103, 8 pages, English

    [Refereed]

    Research paper (international conference proceedings)

  • Bubble Growth in Microgravity under the Action of Electric Forces: Experiments and Numerical Simulation

    DI MARCO PAOLO, KURIMOTO RYO, SACCONE GIACOMO, HAYASHI KOSUKE, TOMIYAMA AKIO

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

    [Refereed]

    Research paper (international conference proceedings)

  • Numerical Simulations of Clean and Contaminated Bubbles in Linear Shear Flows

    HAYASHI KOSUKE, AOYAMA SHOHEI, TOMIYAMA AKIO

    Jul. 2014, International Conference on Numerical Methods for Multiphase Flow 2014, ICNMMF2014, 2 pages, English

    [Refereed]

    Research paper (international conference proceedings)

  • Evaluation of Interfacial Shear Stress of Single Drop using Spatiotemporal Filter Velocimetry

    HOSOKAWA SHIGEO, KITAHATA KYOSUKE, HAYASHI Kosuke, TOMIYAMA AKIO

    Jul. 2014, 17th International Symposium on Applications of Laser Techniques to Fluid Mechamics (LISBON 2014), English

    [Refereed]

    Research paper (international conference proceedings)

  • Effects of Numerical Treatment of Viscous and Surface Tension Forces on Predicted Motion of Interface

    HAYASHI KOSUKE, TOMIYAMA AKIO

    Jun. 2014, Journal of Computational Multiphase Flows, 6 (2), 111 - 126, English

    [Refereed]

    Research paper (scientific journal)

  • Void distribution and bubble motion in bubbly flows in a 4×4 rod bundle. Part II: numerical simulation

    HAYASHI KOSUKE, HOSOKAWA SHIGEO, TOMIYAMA AKIO

    Feb. 2014, Journal of Nuclear Science and Technology, 51 (5), 580 - 589, English

    [Refereed]

    Research paper (scientific journal)

  • Void distribution and bubble motion in bubbly flows in a 4 x 4 rod bundle. Part I: Experiments

    Shigeo Hosokawa, Kosuke Hayashi, Akio Tomiyama

    Lack of local void fraction data in a rod bundle makes it difficult to validate a numerical method for predicting gas-liquid two-phase flow in the bundle. Distributions of local void fraction and bubble velocity in each subchannel in a 4x4 rod bundle were, therefore, measured using a double-sensor conductivity probe. Liquid velocity in the subchannel was also measured using laser Doppler velocimetry (LDV) to obtain relative velocity between bubbles and the liquid phase. The size and pitch of rods were 10 and 12.5mm, respectively. Air and water at atmospheric pressure and room temperature were used for the gas and liquid phases, respectively. The volume fluxes of gas and liquid phases ranged from 0.06 to 0.15m/s and from 0.9 to 1.5m/s, respectively. Experimental results showed that the distributions of void fraction in inner and side subchannels depend not only on lift force acting on bubbles but also on geometrical constraints on bubble dynamics, i.e. the effects of rod walls on bubble shape and rise velocity. The relative velocity between bubbles and the liquid phase in the subchannel forms a non-uniform distribution over the cross-section, and the relative velocity becomes smaller as bubbles approach the wall due to the wall effects.

    TAYLOR & FRANCIS LTD, Feb. 2014, JOURNAL OF NUCLEAR SCIENCE AND TECHNOLOGY, 51 (2), 220 - 230, English

    [Refereed]

    Research paper (scientific journal)

  • Implicit-correction-based immersed boundary–lattice Boltzmann method with two relaxation times

    SETA Takeshi, ROJAS, Roberto, HAYASHI KOSUKE, TOMIYAMA AKIO

    Feb. 2014, Physical Review E, 89, 023307, English

    [Refereed]

    Research paper (scientific journal)

  • Effects of shape oscillation on mass transfer from a Taylor bubble

    Kosuke Hayashi, Shogo Hosoda, Gretar Tryggvason, Akio Tomiyama

    Interface tracking simulations of mass transfer from Taylor bubbles were carried out to investigate effects of shape oscillation on the mass transfer. Mass transfer from carbon dioxide Taylor bubbles in a glycerol-water solution was also measured to obtain experimental data for the validation of the numerical method. A high spatial resolution was used to resolve thin concentration boundary layers on the bubble interface, which enabled us to capture the agitation of boundary layer due to interfacial waves. The predicted mass transfer coefficients were in good agreements with the experimental data, provided that the spatial resolution was high enough to capture thin concentration boundary layers of high Schmidt number Taylor bubbles. The simulations have made it clear that the effect of agitation of concentration boundary layer due to interfacial waves on the total mass transfer rate is small and a fluctuation of the Sherwood number is caused by a fluctuation of the bubble surface area. This result implies that interface tracking methods using boundary layer approximations can give accurate predictions for mass transfer from bubbles even when the flow field is not fully resolved when the wave effect on the net mass transfer is negligible. (C) 2013 Elsevier Ltd. All rights reserved.

    PERGAMON-ELSEVIER SCIENCE LTD, Jan. 2014, INTERNATIONAL JOURNAL OF MULTIPHASE FLOW, 58, 236 - 245, English

    [Refereed]

    Research paper (scientific journal)

  • Effects of hydrophilic particles on bubbly flow in slurry bubble column

    Shimpei Ojima, Kosuke Hayashi, Akio Tomiyama

    To investigate the effects of hydrophilic particles on slurry bubble flows in a bubble column, distributions of the local gas holdup and the bubble frequency are measured using an electric conductivity probe. Particles are made of silica and their diameter is 100 mu m. The particle volumetric concentration C-S is varied from 0 to 0.40. The measured data imply that the presence of particles promotes bubble coalescence. The film drainage time for two coalescing bubbles in a quasi two-dimensional bubble flow in a small vessel is also measured to quantitatively evaluate the particle effect on coalescence. A particle-effect multiplier is introduced into a coalescence efficiency model by taking into account the data of film drainage time and is implemented into a multi-fluid model. The main conclusions obtained are as follows: (1) the local gas holdup and bubble frequency in slurry bubble flows decrease with increasing the particle concentration, (2) the hydrophilic particles enhance bubble coalescence and the enhancement saturates at C-S similar or equal to 0.45, (3) the particle effect on coalescence is well accounted for by introducing the particle-effect multiplier to the film drainage time, and (4) the multi-fluid model can give good predictions for the distribution of the local gas holdup in the slurry bubble column. (C) 2013 Elsevier Ltd. All rights reserved.

    PERGAMON-ELSEVIER SCIENCE LTD, Jan. 2014, INTERNATIONAL JOURNAL OF MULTIPHASE FLOW, 58, 154 - 167, English

    [Refereed]

    Research paper (scientific journal)

  • An Interface-Capturing Method for Free-Surface Flows in a Flow Channel Consisting of Solid Obstacles

    Abhinav Dhar, Naoki Shimada, Kosuke Hayashi, Akio Tomiyama

    An interface-capturing method for simulating two-phase flows in complex geometries is proposed. A structured orthogonal grid is used, and the presence of stationary solid boundaries is taken into account by using the volume fraction of the solid phase in a computational cell. The transport equation of the fluid volume fraction in the presence of solid boundaries is derived. The fluid phases are transported by using the THAINC (tangent of hyperbola with adaptive slope for interface capturing) method. An immersed boundary method is implemented to accurately calculate the volume flux of each fluid phase through a computational cell face, a part of which is blocked by the solid phase. Transportation of a fluid square in the presence of solid boundaries is carried out, to con firm that the errors in shape and volume conservation are low. The applicability of the proposed method to two-phase flows in complex geometries is examined through simulations of a flow about cylindrical tubes in a staggered arrangement and a dam break problem with an obstacle. In the former the pressure drop in the single-phase condition agrees well with the available correlation and the gas-liquid behavior in the tube geometry is qualitatively well predicted. The predicted liquid flow in the dam break problem also agrees well with available experimental data.

    SOC CHEMICAL ENG JAPAN, 2014, JOURNAL OF CHEMICAL ENGINEERING OF JAPAN, 47 (3), 230 - 240, English

    [Refereed]

    Research paper (scientific journal)

  • Permeation of concentrated oil-in-water emulsions through a membrane pore: numerical simulation using a coupled level set and the volume-of-fluid method

    Yusuke Kagawa, Toru Ishigami, Kosuke Hayashi, Hiromi Fuse, Yasushi Mino, Hideto Matsuyama

    In this paper, we investigated the demulsification behavior of oil-in-water (O/W) emulsions during membrane permeation in the oil-water separation process using a numerical simulation approach. To accurately deal with the large deformation of the oil-water interface by coalescence and wetting, and to estimate the volume of the coalesced oil droplet, the coupled level set and volume-of-fluid method was used as the interface capturing method. We applied the simulation model to the permeation of O/W emulsions through a membrane pore, and then investigated the effects of the wettability of the membrane surface, filtration flux, and pore size on the demulsification efficiency. The results showed that oil droplets were likely to coalesce on the outlet membrane surface. High wettability on the membrane surface and low fluid velocity inside the pore increased the demulsification efficiency. This is the first work to numerically simulate the demulsification behavior of emulsions through membranes in the oil-water separation process.

    ROYAL SOC CHEMISTRY, 2014, SOFT MATTER, 10 (40), 7985 - 7992, English

    [Refereed]

    Research paper (scientific journal)

  • Permeation of concentrated oil-in-water emulsions through a membrane pore: numerical simulation using a coupled level set and the volume-of-fluid method

    Yusuke Kagawa, Toru Ishigami, Kosuke Hayashi, Hiromi Fuse, Yasushi Mino, Hideto Matsuyama

    In this paper, we investigated the demulsification behavior of oil-in-water (O/W) emulsions during membrane permeation in the oil-water separation process using a numerical simulation approach. To accurately deal with the large deformation of the oil-water interface by coalescence and wetting, and to estimate the volume of the coalesced oil droplet, the coupled level set and volume-of-fluid method was used as the interface capturing method. We applied the simulation model to the permeation of O/W emulsions through a membrane pore, and then investigated the effects of the wettability of the membrane surface, filtration flux, and pore size on the demulsification efficiency. The results showed that oil droplets were likely to coalesce on the outlet membrane surface. High wettability on the membrane surface and low fluid velocity inside the pore increased the demulsification efficiency. This is the first work to numerically simulate the demulsification behavior of emulsions through membranes in the oil-water separation process.

    ROYAL SOC CHEMISTRY, 2014, SOFT MATTER, 10 (40), 7985 - 7992, English

    [Refereed]

    Research paper (scientific journal)

  • Effects of inlet condition on flow structure of bubbly flow in a rectangular column

    Mohd Hatta, bin Mohd, Akbar, HAYASHI KOSUKE, LUCAS Dirk, TOMIYAMA AKIO

    Dec. 2013, Chemical Engineering Science, 104, 166 - 176, English

    [Refereed]

    Research paper (scientific journal)

  • Immersed Boundary-Finite Difference Lattice Boltzmann Method Using Two Relaxation Times

    ROJAS, Roberto, SETA, Takeshi, HAYASHI KOSUKE, TOMIYAMA AKIO

    JSME, Sep. 2013, Journal of Fluid Science and Technology, 8 (3), 262 - 276, English

    [Refereed]

    Research paper (scientific journal)

  • Gas-Liquid Two-Phase Flows Inside and Outside an Air Diffuser Pipe

    HAYASHI KOSUKE, TOMIYAMA AKIO

    Sep. 2013, 9th UK - Japan Seminar on Multi-Phase Flow, Japanese

    [Refereed]

    Research paper (international conference proceedings)

  • Distribution of Void Fraction and Liquid Velocity in Air-Water Bubble Column

    OJIMA Shinpei, HOSOKAWA SHIGEO, HAYASHI Kosuke, TOMIYAMA Akio

    Sep. 2013, 9th UK-Japan Seminar on Multi-Phase Flow, English

    [Refereed]

    Research paper (international conference proceedings)

  • Bubble Shape under the Action of Electric Forces

    DI MARCO PAOLO, KURIMOTO RYO, SACCONE GIACOMO, HAYASHI KOSUKE, TOMIYAMA AKIO

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

    [Refereed]

    Research paper (scientific journal)

  • Effects of Inlet Condition on Flow Structure of Bubbly Flow in Rectangular Column

    Mohd Hatta, bin Mohd, Akbar, HAYASHI KOSUKE, TOMIYAMA AKIO, LUCAS, Dirk

    Jun. 2013, 8th World Conference on Experimental Heat Transfer, Fluid Mechanics, and Thermodynamics (ExHFT8), USB memory, 8 pages, English

    [Refereed]

    Research paper (international conference proceedings)

  • Void Distribution and Bubble Motion in Bubbly Flows in a 4 X 4 Rod Bundle

    HOSOKAWA SHIGEO, HAYASHI KOSUKE, TOMIYAMA AKIO

    May 2013, 15th International Topical Meeting on Nuclear Reactor Thermal - Hydraulics, NURETH-15, NURETH15 - 244, USB memory, 12 pages, English

    [Refereed]

    Research paper (international conference proceedings)

  • NUMERICAL SIMULATION OF BUBBLY FLOWS IN A 4 X 4 ROD BUNDLE USING A MULTI-FLUID MODEL

    HAYASHI KOSUKE, HOSOKAWA SHIGEO, TOMIYAMA AKIO

    May 2013, 15th International Topical Meeting on Nuclear Reactor Thermal - Hydraulics, NURETH-15, NURETH15 - 245, USB memory, 12 pages, English

    [Refereed]

    Research paper (international conference proceedings)

  • Mass Transfer from Single Carbon Dioxide Bubbles in Glycerol-Water Solution

    AOKI JIRO, HOSODA SHOGO, HAYASHI KOSUKE, TOMIYAMA AKIO, HOSOKAWA SHIGEO

    May 2013, 8th International Conference on Multiphase Flow, ICMF2013, ICMF2013 - 229, USB memory, 9 pages, English

    [Refereed]

    Research paper (international conference proceedings)

  • Effects of Shape Oscillation on Mass Transfer from a Taylor Bubble

    HOSODA SHOGO, HAYASHI KOSUKE, HOSOKAWA SHIGEO, TOMIYAMA AKIO

    May 2013, 8th International Conference on Multiphase Flow, ICMF2013, ICMF2013 - 286, USB memory, 8 pages, English

    [Refereed]

    Research paper (international conference proceedings)

  • Effects of Hydrophilic Particles on Bubble Coalescence in Slurry Bubble Column

    OJIMA SHIMPEI, HAYASHI KOSUKE, HOSOKAWA SHIGEO, TOMIYAMA AKIO

    May 2013, 8th International Conference on Multiphase Flow, ICMF2013, ICMF2013 - 157, USB memory, 13 pages, English

    [Refereed]

    Research paper (international conference proceedings)

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

    KURIMOTO, Ryo, HAYASHI, Kosuke, TOMIYAMA, Akio

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

    [Refereed]

    Research paper (scientific journal)

  • Numerical Simulation of Flows about a Stationary and a Free-Falling Cylinder Using Immersed Boundary-Finite Difference Lattice Boltzmann Method

    ROJAS, Roberto, HAYASHI KOSUKE, SETA, Takeshi, TOMIYAMA AKIO

    Multi-Science Publishing, Mar. 2013, Journal of Computational Multiphase Flows, 5 (1), 27 - 41, English

    [Refereed]

    Research paper (scientific journal)

  • NUMERICAL ANALYSIS OF THERMAL-HYDRAULICS BY IMMERSED BOUNDARY-LATTICE BOLTZMANN METHOD USING TWO-RELAXATION-TIME

    SETA, Takeshi, UCHIDA, Yosuke, ROJAS, Roberto, HAYASHI, Kosuke, TOMIYAMA, Akio

    Dec. 2012, 計算数理工学論文集, Vol. 12, pp. 37-42, Japanese

    [Refereed]

    Research paper (scientific journal)

  • Numerical analysis of thermal-hydraulics by immersed boundary-lattice Boltzmann method using two-relaxation-time

    SETA, Takeshi, UCHIDA, Yosuke, ROJAS, Roberto, HAYASHI, Kosuke, TOMIYAMA, Akio

    Dec. 2012, ICOME2012/JASCOME2012

    Research paper (international conference proceedings)

  • IMMERSED BOUNDARY-FINITE DIFFERENCE LATTICE BOLTZMANN METHOD USING TWO RELAXATION TIMES

    ROJAS, Roberto, SETA, Takeshi, HAYASHI, Kosuke, TOMIYAMA, Akio

    Dec. 2012, 9th International Conference on CFD in the Minerals and Process Industries,, CD-ROM, 6 pages, English

    [Refereed]

    Research paper (international conference proceedings)

  • EFFECTS OF NUMERICAL TREATMENT OF VISCOUS AND SURFACE TENSION FORCES ON PREDICTED INTERFACE MOTION

    HAYASHI, Kosuke, TOMIYAMA, Akio

    Dec. 2012, 9th International Conference on CFD in the Minerals and Process Industries,, CD-ROM, 6 pages

    [Refereed]

    Research paper (international conference proceedings)

  • BUBBLE TRACKING SIMULATION OF BUBBLE-INDUCED PSEUDOTURBULENCE

    Mohd Hatta, bin Mohd, Akbar, HAYASHI KOSUKE, HOSOKAWA SHIGEO, TOMIYAMA AKIO

    Begell house, Dec. 2012, Multiphase Science and Technology, 24 (3), 197 - 222, DOI: 10.1615/MultScienTec, English

    [Refereed]

    Research paper (scientific journal)

  • Interface Tracking Simulation of Bubbles in Clean and Contaminated Systems

    HAYASHI, Kosuke, TOMIYAMA, Akio

    Nov. 2012, Korea-Japan CFD Workshop 2012,, 8 pages

    Research paper (international conference proceedings)

  • BUBBLE TRACKING SIMULATION OF BUBBLE-INDUCED PSEUDO TURBULENCE

    Mohd Hatta, bin Mohd, Akbar, Hayashi, Kosuke, Hosokawa, Shigeo, TOMIYAMA, Akio

    Sep. 2012, 6th Japanese-European Two-Phase Flow Group Meeting, USB memory, 10 pages

    [Refereed]

    Research paper (international conference proceedings)

  • Effects of swirler shape on swirling annular flow in a gas–liquid separator

    MATSUBAYASHI, Toshiki, KATONO, Kenichi, HAYASHI, Kosuke, TOMIYAMA, Akio

    Aug. 2012, Nuclear Engineering and Design, Vol. 249 pp. 63–70

    [Refereed]

    Research paper (scientific journal)

  • Numerical Simulation of Mass Transfer From a Taylor Bubble with Shape Oscillation

    HOSODA, Shogo, HAYASHI Kosuke, HOSOKAWA, Shigeo, TOMIYAMA, Akio

    Jun. 2012, International Conference on Numerical Methods in Multiphase Flows, No. 7-1

    Research paper (international conference proceedings)

  • Immersed Boundary-Lattice Boltzmann Method Using Two Relaxation Times

    HAYASHI, Kosuke, ROJAS, Roberto, SETA, Takeshi, TOMIYAMA, Akio

    Jun. 2012, The Journal of Computational Multiphase Flows, Vol. 4, No. 2, pp. 193-209

    [Refereed]

    Research paper (scientific journal)

  • EFFECTS OF SURFACTANT ON THE MOTION OF BUBBLES IN LINEAR SHEAR FLOWS

    HAYASHI, Kosuke, KURIMOTO, Ryo, HOSOKAWA, Shigeo, TOMIYAMA, Akio

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

    Research paper (international conference proceedings)

  • Study on Flows inside and outside an Air Diffuser for Membrane Bioreactor

    KIRA, Fumihiro, FURUNO, Shinsuke, HAYASHI Kosuke, SAMPEI, Tomoyuki, TOMIYAMA, Akio

    Apr. 2012, Journal of Fluid Science and Technology, Vol. 7, No. 1, pp. 78-88

    [Refereed]

    Research paper (scientific journal)

  • Mixing of thermally stratified water layer by a free rising wobbling air bubble

    Zun Iztok, PERPAR Matjaz, GREGORC Jurij, HAYASHI Kosuke, TOMIYAMA Akio

    Apr. 2012, Chemical Engineering Science, Vol. 72, pp. 155–171

    [Refereed]

    Research paper (scientific journal)

  • Countercurrent Flow Limitation at the Junction between the Surge Line and the Pressurizer of a PWR

    DOI, Taiga, FUTATSUGI, Takashi, MURASE, Michio, HAYASHI, Kosuke, HOSOKAWA, Shigeo, TOMIYAMA, Akio

    Apr. 2012, Science and Technology of Nuclear Installations, Vol. 2012, 754724, 10 pages

    [Refereed]

    Research paper (scientific journal)

  • Interface Tracking Simulation of Mass Transfer from a Dissolving Bubble

    HAYASHI Kosuke, TOMIYAMA Akio

    Mar. 2012, Journal of Computational Multiphase Flows, 3(4), 247-261

    [Refereed]

    Research paper (scientific journal)

  • Effects of surfactant on terminal velocity of a Taylor bubble in a vertical pipe

    HAYASHI Kosuke, TOMIYAMA Akio

    Mar. 2012, International Journal of Multiphase Flow, Vol. 39, pp. 78-87

    [Refereed]

    Research paper (scientific journal)

  • Immersed Boundary-Finite Difference Lattice Boltzmann Method for Liquid-Solid Two-Phase Flows

    ROJAS Roberto, SETA Takeshi, HAYASHI Kosuke, TOMIYAMA Akio

    Dec. 2011, Journal of Fluid Science and Technology, 6(6), 1051-1064

    [Refereed]

    Research paper (scientific journal)

  • Multiscale Simulation of Dispersed Flow in Bubble Columns

    TOMIYAMA Akio, OJIMA Shinpei, HAYASHI Kosuke, HOSOKAWA Shigeo

    Oct. 2011, Proc. of 1st International Symposium on Multiscale Multiphase Process Engineering (MMPE), CD-ROM (6 pages)

    Research paper (international conference proceedings)

  • Mass transfer from a dissolving carbon dioxide bubble in glycerol-water solution

    HOSODA, Shogo, HAYASHI Kosuke, TOMIYAMA Akio

    Sep. 2011, International Conference on Advanced Technology in Experimental Mechanics 2011

    Research paper (international conference proceedings)

  • Counter-current flow limitation at the junction between the surge line and the pressurizer of a PWR

    FUTATSUGI, Takashi, NARIAI, Toshifumi, HAYASHI, Kosuke, TOMIYAMA Akio, YANAGI, Chihiro, MURASE, Michio

    Sep. 2011, Proc. of 14th International Topical Meeting on Nuclear Reactor Thermalhydraulics (NURETH-14), No. NURETH14-057, CD-ROM (12 p

    [Refereed]

    Research paper (international conference proceedings)

  • Assessment of turbulence models for bubbly flow in a bubble column

    SATO, Hiroyasu, Mohd Hatta Bin Mohd, Akbar, HAYASHI, Kosuke, TOMIYAMA Akio

    Sep. 2011, International Conference on Advanced Technology in Experimental Mechanics 2011

    Research paper (international conference proceedings)

  • Numerical Simulation of Bubbles Contaminated with Soluble Surfactant

    KURIMOTO Ryo, HAYASHI Kosuke, TOMIYAMA Akio

    Jul. 2011, Proc. of ASME-JSME-KSME joint Fluids Engineering Conference 2011, AJKFED2011-04019, 10 pages

    [Refereed]

    Research paper (international conference proceedings)

  • Interface tracking simulation of mass transfer from a dissolving bubble

    HAYASHI Kosuke, TOMIYAMA Akio

    Jul. 2011, Proc. of ASME-JSME-KSME joint Fluids Engineering Conference 2011, AJKFED2011-04007, 9 pages

    [Refereed]

    Research paper (international conference proceedings)

  • Interface tracking and multi-fluid simulation of bubbly flows in bubble columns

    TOMIYAMA Akio, HAYASHI Kosuke

    Jun. 2011, 8th International Conference on COMPUTATIONAL FLUID DYNAMICS in the Oil & Gas, Metallurgical and Process Industries

    Research paper (international conference proceedings)

  • Interface tracking simulation of dissolving bubbles and of contaminated bubbles and drops

    TOMIYAMA Akio, HAYASHI Kosuke

    May 2011, 49th European Two-Phase Flow Group Meeting

    Research paper (international conference proceedings)

  • Terminal velocity of a Taylor drop in a vertical pipe

    HAYASHI, Kosuke, KURIMOTO, Ryo, TOMIYAMA, Akio

    Apr. 2011, International Journal of Multiphase Flow,, Vol. 37, 241-251

    [Refereed]

    Research paper (scientific journal)

  • Mass Transfer from a Bubble in a Vertical Pipe

    HOSODA, Shogo, SAKATA, Ryosuke, HAYASHI, Kosuke, TOMIYAMA, Akio

    Mar. 2011, ASME/JSME 8th Thermal Engineering joint Conference, AJTEC2011-44089, 9 pages

    [Refereed]

    Research paper (international conference proceedings)

  • Numerical Verification of a Simplified Model for Vapor Bubble Lift-Off from a Hydrophlic Heated Flat-Wall

    OKAWA Tomio, HAYASHI Kosuke, TOMIYAMA Akio

    Dec. 2010, Nuclear Engineering and Design, Vol. 240, pp. 3942-3948

    [Refereed]

    Research paper (scientific journal)

  • 鉛直円管内旋回気液二相流の流動様式に関する研究

    SHAKUTSUI Hideaki, HAYASHI Kosuke, SUZUKI Takayuki

    Sep. 2010, Japanese Journal of Multiphase Flow, Vol. 24, No. 3, pp. 305-312, Japanese

    [Refereed]

    Research paper (scientific journal)

  • Interface Tracking simulation of mass transfer from a dissolving bubble in a vertical pipe

    HAYASHI Kosuke, TOMIYAMA Akio

    Sep. 2010, 8th Japan-UK Seminar on Multiphase Flows

    Research paper (international conference proceedings)

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

    HAYASHI Kosuke, KURIMOTO Ryo, TOMIYAMA Akio

    Jul. 2010, Multiphase Science and Technology, Vol. 22, Issue 3, pp. 197-210

    [Refereed]

    Research paper (scientific journal)

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

    HAYASHI Kosuke, KURIMOTO Ryo, TOMIYAMA Akio

    Jun. 2010, Journal of Computatioanl Multiphase Flows, Vol.2, No.1, pp.47-58

    [Refereed]

    Research paper (scientific journal)

  • Agitation of thermally stratified water layer by free rising wobbling air bubble

    ZUN Iztok, PERPAR Matjaz, GREGORC Jurij, HAYASHI Kosuke, TOMIYAMA Akio

    Jun. 2010, 48th European Two-Phase Flow Group Meeting 2010, ETPFGM'10

    Research paper (international conference proceedings)

  • Terminal velocity of a Taylor drop in a vertical pipe

    HAYASHI Kosuke, Ryo Kurimoto, TOMIYAMA Akio

    May 2010, Proc. of 7th International Conference on Multiphase Flow, ICMF2010, 13 pages

    [Refereed]

    Research paper (international conference proceedings)

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

    KURIMOTO Ryo, HAYASHI Kosuke, TOMIYAMA Akio

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

    [Refereed]

    Research paper (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]

    Research paper (international conference proceedings)

  • Pressure Drops in Gas-Liquid Two-Phase Flow in a Rod Bundle with Partial Length Rods

    OHTA, Motoki, HOSOKAWA, Shigeo, HAYASHI, Kosuke, TOMIYAMA, Akio

    Mar. 2010, Japanese Journal of Multiphase Flow, Vol. 23, No. 5, pp. 547-554, Japanese

    [Refereed]

    Research paper (scientific journal)

  • Study on interface tracking method based on unstructured grid

    CHO, Masakazu, HAYASHI, Kosuke, SHAKUTSUI, Hideaki

    Mar. 2010, Research reports of Kobe city college of technology, No. 48, pp. 45-50, Japanese

    [Refereed]

    Research paper (scientific journal)

  • Study on decompression of floatation thickening of activated sludge

    OKU Tomiaki, MIYAAKE Daiki, SAWAI Masakazu, HAYASHI Kosuke, SUZUKI Takayuki, SHAKUTSUI Hideaki

    Mar. 2010, 神戸高専研究紀要, 49, Japanese

    [Refereed]

    Research paper (scientific journal)

  • T字形エルボによるキャビテーション壊食対策に関する研究

    NAEKI, Shinya, SHIBATA, Takahiro, HAYASHI, Kosuke, SUZUKI, Takayuki, SHAKUTSUI, Hideaki

    Mar. 2010, Research reports of Kobe city college of technology, No. 48, pp. 39-44, Japanese

    [Refereed]

    Research paper (scientific journal)

  • Bubble Coalescence in a Slurry Bubble Column

    OBATA Satoshi, OJIMA Shinpei, HAYASHI Kosuke, TOMIYAMA Akio

    2010, The 8th Japan-UK Seminar on Multiphase Flow

    Research paper (international conference proceedings)

  • An Evolving Numerical Method for Designing Slurry Bubble Column Reactors

    TANAKA, Masahiro, HAYASHI, Kosuke, TOMIYAMA, Akio

    Jan. 2010, Kagaku-Kogaku, 36-1, 17-24, Japanese

    [Refereed]

    Research paper (scientific journal)

  • Numerical Simulation of Poly-Dispersed Bubbly Flows in Bubble Columns using a Multi-Fluid Model

    TANAKA, Masahiro, HAYASHI, Kosuke, TOMIYAMA, Akio

    Nov. 2009, Transaction of the Japanese Society of Mechanical Engineers, 75-759, pp.2182-2189, Japanese

    [Refereed]

    Research paper (scientific journal)

  • Numerical Simulation of Bubble Motion about a Grid Spacer in a Rod Bundle

    ZHANG Zheng, HOSOKAWA Shigeo, HAYASHI Kosuke, TOMIYAMA Akio

    Sep. 2009, Journal of Power and Energy Systems, Vol. 3, No. 2, pp. 393 - 404, English

    [Refereed]

    Research paper (scientific journal)

  • Dissolution of Carbon Dioxide Bubbles in Clean and Contaminated Systems

    TOMIYAMA, Akio, ABE, Satoru, HAYASHI, Kosuke, HOSOKAWA, Shigeo

    Sep. 2009, 5th EuropeanTwo-Phase Flow Group Meeting, CD-ROM, 9 pages, English

    [Refereed]

    Research paper (international conference proceedings)

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

    HAYASHI Kosuke, KURIMOTO Ryo, TOMIYAMA Akio

    Sep. 2009, 5th EuropeanTwo-Phase Flow Group Meeting, CD-ROM, 6 pages, English

    [Refereed]

    Research paper (international conference proceedings)

  • A Drag Correlation of Fluid Particles Rising Through Stagnant Liquids in Vertical Pipes at Intermediate Reynolds Numbers

    HAYASHI Kosuke, TOMIYAMA Akio

    Jun. 2009, Chemical Engineering Science, Vol. 64, Issue 12, pp. 3019-30

    [Refereed]

    Research paper (scientific journal)

  • Reduction of frictional pressure drop in micro bubble flow in a horizontal pipe

    HOSHINO, Takeshi, AOTA, Koichi, HAYASHI, Kosuke, SHAKUTSUI, Hideaki

    Mar. 2009, Research reports of Kobe city college of technology, No. 47, pp. 13-18, Japanese

    [Refereed]

    Research paper (scientific journal)

  • Flow pattern of swirling gas-liquid two-phase flow in a vertical pipe and a flow-pattern identification method

    TAKAGAKI, Shintaro, HONMA, Naoki, HAYASHI, Kosuke, SHAKUTSUI, Hideaki

    Mar. 2009, Research reports of Kobe city college of technology, No. 47, pp. 19-24, Japanese

    [Refereed]

    Research paper (scientific journal)

  • Hybrid Multiphase-Flow Simulation of Bubble-Driven Flow in Complex Geometry Using an Immersed Boundary Approach

    TANAKA Masahiro, HAYASHI Kosuke, TOMIYAMA Akio

    2009, Multiphase Science and Technology, Vol. 21, No.1-2, pp. 141-155

    [Refereed]

    Research paper (scientific journal)

  • 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]

    Research paper (international conference proceedings)

  • Flow characteristics of cavitating flow in a T-shape elbow

    MATSUOKA, Takashi, UZAKI, Yuma, HAYASHI, Kosuke, SHAKTSUI, Hideaki, KIKUTANI, Isao

    Mar. 2008, Research reports of Kobe city college of technology, No. 46, pp. 13-18, Japanese

    [Refereed]

    Research paper (scientific journal)

  • A Numericsl Study on the Mechanism of Vapor Bubble Lift-off from a Flat Plate

    OKAWA Tomio, HAYASHI Kosuke, TOMIYAMA Akio

    2008, Proc. 6th Japan-Korea Symp. Nuclear Thermal Hydraulics and Safety, CD-ROM, pp.1-8, English

    [Refereed]

    Research paper (international conference proceedings)

  • Qualitative Validity of Volume Tracking Simulation of Bubble Motion with Low Spatial Resolution

    HAYASHI Kosuke, SOU Akira, TOMIYAMA Akio

    Dec. 2007, Journal of Fluid Science and Technology, Vol. 2, No. 2, pp. 490-501, English

    [Refereed]

    Research paper (scientific journal)

  • Numerical Simulation of Single Drops in a Vertical Pipe Using Various Coordinate Systems

    HIROKAWA Keishun, HAYASHI Kosuke, SOU Akira, TOMIYAMA Akio, TAKADA Naoki

    Jul. 2007, Proc. 5th Joint ASME/JSME Fluids Engineering Conference, CD-ROM, FEDSM2007-37491, English

    [Refereed]

    Research paper (international conference proceedings)

  • Interface Tracking Simulation of Bubbles and Drops in Complex Geometries

    HAYASHI Kosuke, TOMIYAMA Akio

    2007, Multiphase Science and Technology, Vol.19, No.2, pp.121-140, English

    [Refereed]

    Research paper (scientific journal)

  • Qualitative Validity of Volume Tracking Simulation of Bubble Motion with Low Spatial Resolution

    HAYASHI Kosuke, SOU Akira, TOMIYAMA Akio

    Oct. 2006, 日本機械学会論文集, Vol. 72, No. 722, (B), pp. 241, Japanese

    [Refereed]

    Research paper (scientific journal)

  • Application of Cahn-Hilliard Equation to the Evaluation of Surface Tension Force

    HAYASHI Kosuke, TAKADA Naoki, TOMIYAMA Akio

    Sep. 2006, Japanese Journal of Multiphase Flow, 20巻3号, pp.244-251, Japanese

    [Refereed]

    Research paper (scientific journal)

  • Interface Tracking Simulation of Bubbles and Drops in Complex Geometries

    HAYASHI, Kosuke, TOMIYAMA, Akio

    Sep. 2006, 4th Japanese-European Two-Phase Flow Group Meeting, CD-ROM (8 pages)

    [Refereed]

    Research paper (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, English

    [Refereed]

    Research paper (scientific journal)

  • Modeling and Hybrid Simulation of Bubbly Flow

    TOMIYAMA Akio, SAKODA Kenichi, HAYASHI Kosuke, SOU Akira, SHIMADA Naoki, HOSOKAWA Shigeo

    Mar. 2006, Multiphase Science and Technology, Vol.18, No.1, pp.73-110, English

    [Refereed]

    Research paper (scientific journal)

  • Toward Hybrid Simulation of Bubbly Flow (Invited Lecture)

    TOMIYAMA Akio, SAKODA Kenichi, HAYASHI Kosuke

    Sep. 2005, Proc. Int. Minisymposium on Challenger and Adavances in Flow SImulation and Modeling, p.276, English

    Research paper (international conference proceedings)

  • A Volume Tracking Method based on Advanced Subgrid Counting Algorithm

    HAYASHI Kosuke, Win Myint, SOU Akira, TOMIYAMA Akio

    Jun. 2005, Proc. 2005 ASME Fluids Engineering Division Summer Meeting, CD-ROM, FEDSM2005-77396, English

    [Refereed]

    Research paper (international conference proceedings)

  • A Volume Tracking Method for Multi-Phase Flow Simulation (Improvement of an Interface Reconstruction Method)

    宋 明良, 林 公祐, 冨山 明男

    Oct. 2004, 日本機械学会論文集(B編), 70-698, 2538-2544, Japanese

    [Refereed]

    Research paper (scientific journal)

  • 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]

    Research paper (international conference proceedings)

  • Numerical Analysis of Methanol Droplet Combustion in Hot Air Flow.

    SOU Akira, HAYASHI Kosuke, Jyh-Yuan Chen

    Nov. 2003, Proc. 4th Asia-Pacific Conference on Combustion (ASPACC 2003), Paper No.071, English

    [Refereed]

    Research paper (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]

    Research paper (international conference proceedings)

MISC

  • 時空間フィルタ流速計による単一液滴に作用する界面せん断応力の評価

    HOSOKAWA SHIGEO, KITAHATA KYOSUKE, HAYASHI KOSUKE, TOMIYAMA AKIO

    Dec. 2014, ながれ, 33 (6), 509 - 512, Japanese

    [Refereed][Invited]

    Prompt report, short report, and research note, etc. (scientific journal)

  • Flow Visualization of Segregation Process in a Fluidized-Bed by Neutron Radiography

    FURUI Shuji, UMEKAWA Hisashi, HAYASHI Kousuke, OZAWA Mamoru, TAKENAKA Nobuyuki

    2005, IEEE Trans.on Nuclear Science, 52(1),295-298, English

    [Refereed]

    Other article

Books etc

  • Encyclopedia of Two-Phase Heat Transfer and Flow III: Macro and Micro Flow Boiling and Numerical Modeling Fundamentals

    HAYASHI KOSUKE

    Other, World Scientific Publishing, May 2018, English

    Scholarly Book

Presentations

  • Effects of Surfactant on Taylor Flows in a Microchannel

    OKUI SYUYA, HAYASHI KOSUKE, YOSHIDA NAOYUKI, HOSOKAWA SHIGEO, TOMIYAMA AKIO

    2019 Annual Meeting of the Japanese Society of Fluid Mechanics, 15 Sep. 2019, Japanese

    Oral presentation(general)

  • Interfacial and wall friction factors for gas-liquid counter-current flow in vertical pipes

    GODA RAITO, SHIMAMURA TAKEYUKI, HAYASHI KOSUKE, HOSOKAWA SHIGEO, MURASE MICHIO, TOMIYAMA AKIO

    Multiphase Flow Symposium 2019, 07 Aug. 2019, Japanese

    Oral presentation(general)

  • Interfacial and wall friction factors of a swirling annular flow

    YAHARA YOSHIHIRO, HAYASHI KOSUKE, HOSOKAWA SHIGEO, TOMIYAMA AKIO

    Multiphase Flow Symposium 2019, 05 Aug. 2019, Japanese

    Oral presentation(general)

  • Three-Dimensional Flow Characteristics around a Bulge Structure in a Cavity Swept by a Viscoelastic Fluids

    SUZUKI Hiroshi, KAWATA Masaki, HIDEMA Ruri, HOSOKAWA Shigeo, HAYASHI Kosuke, TOMIYAMA Akio

    Annual European Rheology Conference 2019 (AERC 2019), Apr. 2019, English, Portorož, Slovenia

    Oral presentation(general)

  • 管路内気泡・液滴の運動に及ぼす界面活性剤の影響

    HAYASHI KOSUKE

    第20回気液固分散工学サロン, Mar. 2019, Japanese, 芝浦工業大学

    [Invited]

    Oral presentation(invited, special)

  • 単一液滴に作用する力の実験的分析

    SHIGEKANE GAKU, HOSOKAWA SHIGEO, HAYASHI KOSUKE, TOMIYAMA AKIO

    第95期日本機械学会流体工学部門講演会, Nov. 2018, Japanese, 日本機械学会, Muroran

    Poster presentation

  • 可溶性界面活性剤により汚染された球形液滴の数値シミュレーション

    HAYASHI KOSUKE, SAKAI KOHEI, HOSOKAWA SHIGEO, TOMIYAMA AKIO

    日本流体力学会年会2018, Sep. 2018, Japanese, 大阪大学

    Oral presentation(general)

  • 上端シャープエッジ鉛直管における気液二相対向流の界面及び壁面摩擦係数

    SHIMAMURA TAKEYUKI, GODA RAITO, HAYASHI KOSUKE, HOSOKAWA SHIGEO, MURASE MICHIO, NISHIDA KOJI, TOMIYAMA AKIO

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

    Oral presentation(general)

  • 鉛直円管内単一二酸化炭素気泡の物質移動に及ぼすアルコールと電解質の相互作用の影響

    HIROTA YUTAKA, HORI YOHEI, HAYASHI KOSUKE, HOSOKAWA SHIGEO, TOMIYAMA AKIO

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

    Oral presentation(general)

  • U字管内気液二相流の圧力損失に及ぼす液相粘度の影響

    HAYASHI KOSUKE, SUZUKI DAIKI, HOSOKAWA SHIGEO, TOMIYAMA AKIO

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

    Oral presentation(general)

  • 気泡による微細粒子輸送に関する研究

    KANG JYUNGYU, HAYASHI KOSUKE, TOMIYAMA AKIO, TAGUCHI KENJI, TSUKAGUCHI YUICHI

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

    Oral presentation(general)

  • 鉛直円管内旋回気液二相流の圧力損失に関する研究

    FUNAHASHI HAYATO, KINOSHITA HIROHITO, HAYASHI KOSUKE, HOSOKAWA SHIGEO, TOMIYAMA AKIO

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

    Oral presentation(general)

  • U字管内気液二相流の圧力損失に関する研究

    SUZUKI DAIKI, HAYASHI KOSUKE, HOSOKAWA SHIGEO, TOMIYAMA AKIO

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

    Oral presentation(general)

  • Numerical Simulation of Contaminated Bubbles and Drops Using Level Set Method (Keynote Lecture)

    HAYASHI KOSUKE

    International Conference on Numerical Methods in Multiphase Flow, Jun. 2017, English, Tokyo

    Oral presentation(keynote)

  • 二相流数値計算検証のための実験計測

    HOSOKAWA SHIGEO, HAYASHI KOSUKE, TOMIYAMA AKIO

    日本機械学会研究分科会RC270第3回分科会, Dec. 2016, Japanese, 日本機械学会, Tokyo

    Symposium workshop panel(nominated)

  • 気泡と液液のシミュレーションとモデリング(招待講演)

    HAYASHI KOSUKE

    第22回流動化・粒子プロセッシングシンポジウム, Dec. 2016, Japanese

    Oral presentation(general)

  • 時空間フィルタ流速計による界面活性剤の吸着を伴う液滴の測定

    HOSOKAWA SHIGEO, MASUKURA YUYA, HAYASHI KOSUKE, TOMIYAMA AKIO

    第94期日本機械学会流体工学部門講演会, Nov. 2016, Japanese

    Oral presentation(general)

  • 塔径及び初期液位が気泡塔内平均ボイド率に及ぼす影響

    内田 賢吾, 橋田 昌明, 佐々木 翔平, HAYASHI KOSUKE, TOMIYAMA AKIO

    混相流シンポジウム2016, Aug. 2016, Japanese

    Oral presentation(general)

  • 静止液中単一気泡の形状に及ぼす界面活性剤の影響に関する研究

    竹川 稔彦, 青山 昌平, HAYASHI KOSUKE, TOMIYAMA AKIO

    混相流シンポジウム2016, Aug. 2016, Japanese

    Oral presentation(general)

  • Shapes of single bubbles in infinite stagnant liquids contaminated with surfactant

    TAKEGAWA TOSHIHIKO, AOYAMA SHOHEI, HAYASHI KOSUKE, HOSOKAWA SHIGEO, TOMIYAMA AKIO

    混相流シンポジウム2016, Aug. 2016, Japanese

    Oral presentation(general)

  • 鉛直円管内電解質水溶液中単一二酸化炭素気泡の物質移動に関する研究

    堀 陽平, 青木 二郎, HAYASHI KOSUKE, HOSOKAWA SHIGEO, TOMIYAMA AKIO

    混相流シンポジウム2016, Aug. 2016, Japanese

    Oral presentation(general)

  • U字管内気液二相流の圧力損失に関する研究

    宮地 祥人, HAYASHI KOSUKE, HOSOKAWA SHIGEO, TOMIYAMA AKIO, 舘山 将也, 廣津 誠, 竹田 信宏

    混相流シンポジウム2016, Aug. 2016, Japanese

    Oral presentation(general)

  • 散気管内外の流れに散気孔の周方向角度が及ぼす影響

    SATO RYO, MIYAYOSHI TATSUYA, HAYASHI KOSUKE, TOMIYAMA AKIO

    日本機械学会関西支部第91期定時総会講演会, pp. 129-132, Mar. 2016, Japanese, 大阪

    Oral presentation(general)

  • 埋め込み境界-熱流動格子ボルツマン法における熱流束境界条件の精度に及ぼす二緩和時間衝突則の影響

    SETA TAKESHI, HAYASHI KOSUKE, TOMIYAMA AKIO

    第29回数値流体力学シンポジウム, Dec. 2015, Japanese, 九州大学筑紫キャンパス

    Oral presentation(general)

  • Reduction of the Temperature Jump in the Immersed Boundary-Thermal Lattice Boltzmann Method

    SETA TAKESHI, HAYASHI KOSUKE, TOMIYAMA AKIO

    American Physical Society 68th Annual DFD Meeting, Nov. 2015, English, Boston,Massachusetts, U.S.A.

    Oral presentation(general)

  • 境界適合型時空間フィルタ流速計と界面活性剤濃度評価の試み

    HOSOKAWA SHIGEO, HAYASHI KOSUKE, TOMIYAMA AKIO

    日本機械学会研究分科会RC263第6回分科会, Sep. 2015, Japanese, 日本機械学会, Tokyo

    Symposium workshop panel(nominated)

  • Study on adsorption of surfactant at interface of a spherical drop

    MASUKURA YUYA, HOSOKAWA SHIGEO, HAYASHI KOSUKE, TOMIYAMA AKIO

    日本流体力学会年会2015, Sep. 2015, Japanese, 日本流体力学会, Tokyo

    Oral presentation(general)

  • 二緩和時間衝突則に基づく埋め込み境界法を適用した熱流動格子ボルツマン法

    SETA TAKESHI, HAYASHI KOSUKE, TOMIYAMA AKIO

    混相流シンポジウム2015, Aug. 2015, Japanese, 高知工科大学

    Oral presentation(general)

  • Evaluation of Marangoni Stress Acting on a Single Contaminated Spherical Drop

    MASUKURA YUYA, HOSOKAWA SHIGEO, HAYASHI KOSUKE, TOMIYAMA AKIO

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

    Oral presentation(general)

  • 一様せん断流中単一気泡に働く揚力に関する研究

    AOYAMA SHOHEI, TAKEGAWA TOSHIHIKO, HAYASHI KOSUKE, HOSOKAWA SHIGEO, TOMIYAMA AKIO

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

    Oral presentation(general)

  • サブクール水中における蒸気凝縮音に関する研究

    IKEUCHI KAZUTAKA, TATEYAMA MASAYA, HAYASHI KOSUKE, HOSOKAWA SHIGEO, TOMIYAMA AKIO, HIROTSU MAKOTO, TAKEDA NOBUHIRO

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

    Oral presentation(general)

  • Effects of liquid-separation components on two-phase swirling flow in a steam separator

    KATONO KENICHI, FUNAHASHI HAYATO, HOSOKAWA SHIGEO, HAYASHI KOSUKE, TOMIYAMA AKIO

    第20回動力・エネルギー技術シンポジウム, Jun. 2015, Japanese, 日本機械学会動力エネルギーシステム部門, Sendai

    Oral presentation(general)

  • 冷却材喪失事故時の格納容器内温度シミュレーションモデルの検証;(2)空気及び蒸気吹込み実験

    野末 貴大, 藤井 雄基, HAYASHI KOSUKE, 細川 茂雄, 冨山 明男, 歌野原 陽一, 山本 泰功, 村瀬 道雄

    日本原子力学会 春の大会 2015, Mar. 2015, Japanese, 茨城

    Oral presentation(general)

  • Reduction of the velocity slips by the immersed boundary-lattice Boltzmann method

    SETA TAKESHI, ROJAS ROBERT, HAYASHI KOSUKE, TOMIYAMA AKIO

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

    Oral presentation(general)

  • 時空間フィルタ流速計による単一液滴に作用する界面せん断応力の評価

    HOSOKAWA SHIGEO, KITAHATA KYOSUKE, HAYASHI Kosuke, TOMIYAMA AKIO

    日本流体力学会年会2014, Sep. 2014, Japanese, 日本流体力学会, 宮城県仙台市

    Oral presentation(general)

  • 時空間フィルタ流速計による界面近傍速度測定

    HOSOKAWA SHIGEO, KITAHATA KYOSUKE, HAYASHI Kosuke, TOMIYAMA AKIO

    理論応用力学講演会, Sep. 2014, Japanese, 日本学術会議, 東京都

    Oral presentation(general)

  • 非一様電場におけるオリフィスからの気泡成長

    KURIMOTO RYO, DI MARCO PAOLO, MINAGAWA HISATO, HAYASHI KOSUKE, TOMIYAMA AKIO

    混相流シンポジウム2014, E151, USB Memory (2 pages), Jul. 2014, Japanese, 札幌

    Oral presentation(general)

  • 固体壁に付着した液滴に及ぼす界面活性剤の影響に関する研究

    KITANO MASAAKI, ABHINAV DHAR, HAYASHI KOSUKE, TOMIYAMA AKIO

    混相流シンポジウム2014, A311, USB Memory (2 pages), Jul. 2014, Japanese, 札幌

    Oral presentation(general)

  • 汚れ系における気泡の界面追跡計算と物質移動

    HAYASHI KOSUKE, TOMIYAMA AKIO

    混相流シンポジウム2014, B331, USB Memory (2 pages), Jul. 2014, Japanese, 札幌

    Oral presentation(keynote)

  • スラリー気泡塔内平均ボイド率に及ぼす初期液位の影響

    SASAKI SHOHEI, OJIMA SHIMPEI, HAYASHI KOSUKE, TOMIYAMA AKIO

    混相流シンポジウム2014, A311, USB Memory (2 pages), Jul. 2014, Japanese

    Oral presentation(general)

  • スラリー気泡塔における気泡合体に粒子径が及ぼす影響

    OJIMA SHIMPEI, SASAKI SHOHEI, HAYASHI KOSUKE, HOSOKAWA SHIGEO, TOMIYAMA AKIO

    混相流シンポジウム2014, B232, USB Memory (2 pages), Jul. 2014, Japanese, 札幌

    Oral presentation(general)

  • U字ベンドにおける空気水系気液二相流の圧力損失に関する研究

    KOBAYASHI SHINGO, HAYASHI KOSUKE, HOSOKAWA SHIGEO, TOMIYAMA AKIO, 廣津 誠, 舘山 将也, 竹田 信宏

    混相流シンポジウム2014, B223, USB Memory (2 pages), Jul. 2014, Japanese, 札幌

    Oral presentation(general)

  • Numerical Study of Concentrated Emulsion Flow Through a Membrane Pore in Oil/Water Separation

    Yusuke KAGAWA, Toru ISHIGAMI, Hiromi FUSE, Yasushi MINO, Kosuke HAYASHI, Hideto MATSUYAMA

    10th International Congress on Membranes and Membrane Processes (ICOM2014), Jul. 2014, English, Suzhou, China

    Oral presentation(general)

  • 散気管内外の流れに及ぼす液相粘度の影響

    SAMPEI TOMOYUKI, HAYASHI KOSUKE, HOSOKAWA SHIGEO, TOMIYAMA AKIO, HLWAN MOE ZAW

    日本機械学会関西支部定時総会・講演会2014, Mar. 2014, Japanese, 大阪府立大学

    Oral presentation(general)

  • 一様せん断流中単一気泡に働く揚力に関する研究 (第2 報 数値計算)

    HAMADA TAKESHI, MATSUNAGA AKIRA, HAYASHI KOSUKE, HOSOKAWA SHIGEO, TOMIYAMA AKIO

    日本機械学会関西支部定時総会・講演会2014, Mar. 2014, Japanese, 大阪府立大学

    Oral presentation(general)

  • 一様せん断流中単一気泡に働く揚力に関する研究(第 1 報 実験)

    MATSUNAGA Akira, HAMADA Takeshi, HOSOKAWA SHIGEO, HAYASHI Kosuke, TOMIYAMA AKIO

    日本機械学会 関西支部第89期定時総会講演会, Mar. 2014, Japanese, 日本機械学会関西支部, 大阪

    Oral presentation(general)

  • 膜分離プロセスにおける流体挙動のモデリングとシミュレーション

    ISHIGAMI TORU, 布施 ひろみ, 香川 裕輔, 浅尾 慎一, HAYASHI KOSUKE, MINO YASUSHI, MATSUYAMA HIDETO

    膜シンポジウム2013, Nov. 2013, Japanese, 日本膜学会, 京都府立医科大学 (京都)

    Oral presentation(general)

  • 散気管内外の流れに液相粘性が及ぼす影響に関する研究

    HAYASHI Kosuke, SAMPEI Tomoyuki, TOMIYAMA Akio, FURUNO Shinsuke, KIRA Fumihiro

    混相流シンポジウム2013, Aug. 2013, Japanese, 日本混相流学会, 長野

    Oral presentation(general)

  • 鉛直円管内CO2気泡周りの濃度分布計測

    HOSODA Shogo, AOKI Jiro, HAYASHI Kosuke, HOSOKAWA Shigeo, TOMIYAMA Akio

    混相流シンポジウム2013, Aug. 2013, Japanese, 日本混相流学会, 長野

    Oral presentation(general)

  • 粘性力及び表面張力の評価法が界面運動の数値予測に及ぼす影響

    HAYASHI KOSUKE, TOMIYAMA AKIO

    第62回理論応用力学講演会, Mar. 2013, Japanese, 東京工業大学

    Oral presentation(general)

  • Effects of surfactant on the lift force acting on bubbles in linear shear flows

    HAYASHI, Kosuke, MATSUNAGA, Akira, HAMADA, Takeshi, TOMIYAMA, Akio

    JSMF Annual Meeting 2012, Aug. 2012, Japanese, 日本混相流学会, Kashiwa

    Oral presentation(general)

  • Reduction of boundary slip from the immersed boundary-lattice Boltzmann method by two-relaxation-time

    SETA, Takeshi, ROJAS, Roberto, HAYASHI, Kosuke, TOMIYAMA, Akio

    JSMF Annual Meeting 2012, Aug. 2012, Japanese, 日本混相流学会, Kashiwa

    Oral presentation(general)

  • Immersed Boundary-Finite Difference Lattice Boltzmann Method Using Two Relaxation Times

    ROJAS, Roberto, SETA, Takeshi, HAYASHI, Kosuke, TOMIYAMA, Akio

    JSMF Annual Meeting 2012, Aug. 2012, Japanese, 日本混相流学会, Kashiwa

    Oral presentation(general)

  • Study on bubbly flow in a four by four rod bundle

    HOSOKAWA Shigeo, MURAMATSU Yuya, TADA Ryo, HAYASHI Kosuke, TOMIYAMA Akio

    The 17th National Symposium on Power and Energy Systems (SPES 2012), Jun. 2012, Japanese, 日本機械学会動力・エネルギー部門, Fukuoka

    Oral presentation(general)

  • Basic study of flow inside a diffuser for membrane bioreactor

    KIRA Fumihiro, KAWAGISHI Tomiki, FURUNO Shinsuke, SAMPEI Tomoyuki, HAYASHI Kosuke, TOMIYAMA Akio

    JSMF Annual Meeting 2011, Aug. 2011, Japanese, 京都

    Oral presentation(general)

  • Dissolution process of a high Schmidt and low Reynolds numbers

    HOSODA Shogo, HAYASHI Kosuke, TOMIYAMA Akio

    JSMF Annual Meeting 2011, Aug. 2011, Japanese, 京都

    Oral presentation(general)

  • 空間フィルタ流速計による気泡速度の測定

    HOSOKAWA Shigeo, SATO Hiroyasu, MATSUMOTO Takaaki, HAYASHI Kosuke, TOMIYAMA Akio

    JSMF Annual Meeting 2011, Aug. 2011, Japanese, 日本混相流学会, Kyoto

    Oral presentation(general)

  • Interface tracking simulation of bubbles with adsorption and desorption of soluble surfactant

    HAYASHI Kosuke, KURIMOTO Ryo, TOMIYAMA Akio

    JSMF Annual Meeting 2011, Aug. 2011, Japanese, 日本混相流学会, 京都

    Oral presentation(general)

  • Effects of particle size and concentration on bubble coalescence in slurry bubble column

    OJIMA Shinpei, OBATA Satoshi, HAYASHI Kosuke, TOMIYAMA Akio

    JSMF Annual Meeting 2011, Aug. 2011, Japanese, 京都

    Oral presentation(general)

  • Countercurrent flow limitation at the upper end of PWR pressurizer surge line

    YANAGI Chihiro, FUTATSUGI Takashi, HAYASHI Kosuke, TOMIYAMA Akio, KINOSHITA Ikuo, MURASE Michio

    JSMF Annual Meeting 2011, Aug. 2011, Japanese, 京都

    Oral presentation(general)

  • 4x4ロッドバンドル内気液二相気泡流に関する研究

    MURAMATSU Yuya, HOSOKAWA Shigeo, HAYASHI Kosuke, TOMIYAMA Akio

    JSMF Annual Meeting 2011, Aug. 2011, Japanese, 日本混相流学会, Kyoto

    Oral presentation(general)

  • 界面追跡法に基づく気液間物質輸送の数値計算

    SAKATA, Ryosuke, HOSODA, Shogo, HAYASHI, Kosuke, TOMIYAMA, Akio

    日本機械学会関西支部 第86期定時総会講演会, Mar. 2011, Japanese, 日本機械学会関西支部, 京都

    Oral presentation(general)

  • Advances in Interface Tracking Method for Hear and Mass Transfers

    HAYASHI Kosuke, TOMIYAMA Akio, ZUN Iztok

    14th Organized Multiphase Flow Forum 2010, Nov. 2010, Japanese, The Japan Society for Multiphase Flow, Sapporo, Hokkaido

    [Invited]

    Oral presentation(invited, special)

  • Numerical simulation of bubbly flow in slurry using multi-fluid model

    OBATA, Satoshi, HAYASHI, Kosuke, TOMIYAMA, Akio

    JSMF Annual Meeting 2010, Jul. 2010, Japanese, Hamamatsu

    Oral presentation(general)

  • 汚泥減圧浮上濃縮装置の開発

    OKU, Tomoaki, SAWAI, Masakazu, MOCHIZUKi, Shuichi, HAYASHI, Kosuke, SUZUKI, Takayuki, SHAKUTSUI, Hideaki

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

    Oral presentation(general)

  • A correlation of terminal velocity for Taylor drops in vertical pipes

    KURIMOTO, Ryo, HAYASHI, Kosuke, TOMIYAMA, Akio

    JSMF Annual Meeting 2010, Jul. 2010, Japanese, Hamamatsu

    Oral presentation(general)

  • 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

    Oral presentation(general)

  • Pressure Drops in Rod Bundle with Partial Length Rods

    OHTA Motoki, HAYASHI Kosuke, HOSOKAWA Shigeo, TOMIYAMA Akio

    JSMF Annual Meeting 2009, Aug. 2009, Japanese, 日本混相流学会, Kumamoto

    Oral presentation(general)

  • 水平管内マイクロバブル乱流の摩擦圧力損失特性に関する研究

    HOSHINO, Takeshi, AOTA, Koichi, HAYASHI, Kosuke, SHAKUTSUI, Hideaki

    日本混相流学会年会講演会2009, pp. 224-225, Aug. 2009, Japanese

    Oral presentation(general)

  • Heat Transfer Enhancement by Air Bubble Rising through Thermally Stratified Layer

    HAYASHI Kosuke, PERPAR Matjaz, ZUN Iztok, TOMIYAMA Akio

    JSMF Annual Meeting 2009, Aug. 2009, Japanese, 日本混相流学会, Kumamoto

    Oral presentation(general)

  • 気相体積率に基づく旋回気液二相流の流動様式判別

    YAMASHITA, Kyohei, TAKAGAKI, Shintaro, HONMA, Naoki, HAYASHI, Kosuke, SHAKUTUI, Hideaki

    日本混相流学会年会講演会2009, pp. 152-153, Aug. 2009, Japanese, 熊本

    Oral presentation(general)

  • Terminal velocities of single large drops rising through a vertical pipe

    YOSHIKAWA Yasuki, KURIMOTO Ryo, HAYASHI Kosuke, TOMIYAMA Akio

    JSMF Annual Meeting 2009, Aug. 2009, Japanese, 日本混相流学会, Kumamoto

    Oral presentation(general)

  • サイホンを利用した汚泥減圧濃縮装置の開発

    OKU, Tomoaki, SHIMADA, Mitsuhiro, HAYASHI, Kosuke, SAWAI, Masakazu, MOCHIZUKI, Shuichi, SHAKUTSUI, Hideaki

    日本高専学会第15回年会・講演会, Aug. 2009, Japanese, 愛知

    Oral presentation(general)

  • T字形のエルボを流動するキャビテーションに関する研究

    NAEKI, Shinya, MATSUOKA, Takashi, HAYASHI, Kosuke, SHAKUTSUI, Hideaki, KIKUTANI, Isao, NAEKI, Shinya

    日本混相流学会年会講演会2008, pp. 244-245, Jun. 2008, Japanese, 会津

    Oral presentation(general)

  • T字形エルボにおけるキャビテーションの流動

    MATSUOKA, Takashiq, UZAKI, Yuma, HAYASHI, Kosuke, SHAKTSUI, Hideaki, KAKEFUDA, Satomi, HIZUME, Makoto, KIKUTANI, Isao

    日本機械学会流体工学部門講演会, CD-ROM (4 pages), Nov. 2007, Japanese, 日本機械学会, 広島

    Oral presentation(general)

  • 鉛直管内旋回気液二相流の流動様式と旋回長さに関する研究

    TAKAGAKI, Shintaro, TAKEDA, Hiroaki, HAYASHI, Kosuke, SHAKUTSUI, Hideaki

    日本混相流学会年会講演会2007, pp. 152-153, Jun. 2007, Japanese, 日本混相流学会, 北海道

    Oral presentation(general)

  • フェーズフィールド界面追跡法による二相流数値シミュレーション

    TAKADA, Naoki, HIROKAWA, Keishun, HAYASHI, Kosuke, TOMIYAMA, Akio

    日本流体力学会第20回数値流体力学シンポジウム, CO-ROM (6 pages), Dec. 2006, Japanese, 日本流体力学会, 名古屋

    Oral presentation(general)

  • Study on Lift Force Acting on Single Drops in Linear Shear Flow

    OGAWA Kohei, Win Myint, HAYASHI Kosuke, HOSOKAWA Shigeo, TOMIYAMA Akio

    JSMF Annual Meeting 2006, Aug. 2006, Japanese, Kanazawa

    Oral presentation(general)

  • 二相流シミュレーションの界面移流・再構成計算に対するカーン‐ヒリヤード方程式の適用性の検討

    TAKADA, Naoki, HIROKAWA, Keishun, HAYASHI, Kosuke, TOMIYAMA, Akio

    日本計算工学会第11回計算工学講演会, pp. 415-416, Jun. 2006, Japanese, 日本計算工学会, 大阪

    Oral presentation(general)

  • 表面張力評価へのカーン‐ヒリヤード方程式の応用

    HAYASHI, Kosuke, TAKADA, Naoki, TOMIYAMA, Akio

    日本機械学会第18回計算力学講演会, pp. 805-806, 2005, Japanese, 日本機械学会, 筑波

    Oral presentation(general)

  • 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

    Oral presentation(general)

  • 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

    Oral presentation(general)

  • 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

    Oral presentation(general)

  • 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

    Poster 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

    Oral presentation(general)



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