TOHOKU UNIVERSITY Researchers

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Ippei Oshima

Section

Institute of Fluid Science

Job title

Assistant Professor

Degree

博士（工学）（神戸大学）
修士（海事科学）（神戸大学）

researchmap

https://researchmap.jp/i_oshima

J-GLOBAL ID

201701006160714157

Research History 6

2025/04 - Present

国立研究開発法人海洋研究開発機構　付加価値情報創生部門数理科学・先端技術研究開発センター　研究員 (クロスアポイントメント)
2021/04 - Present

Tohoku University　Institute of Fluid Science
2021/05 - 2025/03

国立研究開発法人海洋研究開発機構　付加価値情報創生部門数理科学・先端技術研究開発センター　招聘研究員
2024/09 - 2024/10

École Polytechnique Fédérale de Lausanne　Hydraulic Constructions Platform　Host Professor
2023/10 - 2024/02

École Polytechnique Fédérale de Lausanne
2019/05 - 2021/03

海洋研究開発機構

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Committee Memberships 6

日本エネルギー学会液体微粒化部会　委員

2023/04 - Present
Institute for Liquid Atomization and Spray Systems - Asia (ILASS-Asia), ILASS Young Scholar Committee　Committee Members

2023/01 - 2026/12
エネルギー学会微粒化シンポジウム　副委員長・講演プログラム／講演論文担当

2025/01 - 2025/12
日本液体微粒化学会　会誌委員会委員

2022/04 - 2025/03
16th International Conference on Liquid Atomization and Spray Systems (ICLASS 2024)　Scientific Committee

2022/07 - 2024/07
日本液体微粒化学会　液膜式気流微粒化研究委員会学生委員

2015/04 - 2017/03

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Professional Memberships 4

Institute for Liquid Atomization and Spray Systems-Japan

- 2025/03
エネルギー学会

2019 -
日本混相流学会
THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES

Research Interests 7

Synchronization
蒸気タービン
Gas Turbine
Visualization
Spray
Numerical Simulation
Atomization

Research Areas 3

Aerospace, marine, and maritime Engineering / Aerospace engineering /
Manufacturing technology (mechanical, electrical/electronic, chemical engineering) / Thermal engineering /
Manufacturing technology (mechanical, electrical/electronic, chemical engineering) / Fluid engineering /

Awards 3

40 歳以下の若手講演者を対象とした優秀講演賞

2022/12　日本液体微粒化学会　並行気流による平面液膜のバッグ破断後における縦しわの形成と微粒化過程
Best Presentation Award

2016/12　ILASS-Japan
Best Presentation Award

2015/12　ILASS-Japan

Papers 26

Synchronization phenomenon of temperature oscillation in rotating fluid annulus and optimal waveforms of external forcing （To be accepted） Peer-reviewed

Ippei Oshima, Yoji Kawamura

Chaos　35　(4)　043116　2025/04

DOI： 10.1063/5.0233789 　
Visualization of Droplet Splashing Process Deviating from Mainstream Air-flow and Characteristic of Splashed Droplet Forming Liquid Film Peer-reviewed

Ippei Oshima, Hiroyasu Saitoh, Jun Ishimoto

Atomization : journal of the ILASS-Japan　33　(111)　345-353　2025/03
Pragmatic Prediction Model of Droplet Trajectory in a Turbine Cascade Peer-reviewed

Ippei Oshima, Mikito Furuichi

Journal of Turbomachinery　146　(12)　1-12　2024/07/15
Publisher: ASME International
DOI： 10.1115/1.4065785 　

ISSN： 0889-504X

eISSN： 1528-8900

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Abstract Droplet deposition on a turbine cascade is important for the turbine system performance but its experimental analysis is difficult. Thus, the simulation of a droplet liquid phase in a gas flow field was studied to optimize turbine cascade design. However, the computational fluid dynamics (CFD)-based approach for such droplet problems requires enormous costs. Thus, the application of CFD simulation in the turbine blade's early-stage design is challenging, requiring iterative optimization for adjusting design with performance prediction. Therefore, this study proposed an analytical prediction method, having a reasonable cost and moderate accuracy, as an alternative to the whole multi-phase numerical simulation approach. The proposed method predicts droplet motion using the outline of the turbine blade and gas–liquid physical properties. Further, the approach was validated by performing a three-dimensional Eulerian–Lagrangian simulation with low-pressure turbine blade T106. It was found that the droplet trajectories in the turbine cascade are governed by Stokes number. Furthermore, the streamlines of the gas flow were characterized by the shape of the turbine blade. The proposed model reproduced droplet trajectories obtained using CFD within an error margin of 10%. Consequently, it was concluded that the proposed analytical model is a promising approach to predict the droplet trajectory in a turbine cascade, obtained by the three-dimensional numerical simulation at a low cost.
Air-blast atomization of a liquid film Peer-reviewed

Ippei Oshima, Akira Sou

Journal of Fluid Mechanics　985　(A36)　2024

DOI： 10.1017/jfm.2024.279 　
TRANSVERSAL OSCILLATION OF A PLANAR LIQUID SHEET INDUCED BY CO-CURRENT AIRFLOWS Peer-reviewed

Ippei Oshima, Akira Sou

Multiphase Science and Technology　33　(2)　53-67　2021
Publisher: Begell House
DOI： 10.1615/multscientechn.2021038042 　

ISSN： 0276-1459
Numerical Simulation of Liquid Sheet Deformation Caused by Air Flow Peer-reviewed

Ippei OSHIMA, Akira SOU

Transactions of the Japan Society For Aeronautical And Space Sciences, Aerospace Technology Japan　2018

DOI： 10.2322/tastj.16.319 　
Longitudinal Oscillation of a Liquid Sheet by Parallel Air Flows Peer-reviewed

Ippei Oshima, Akira Sou

International Journal of Multiphase Flow　2018

DOI： 10.1016/j.ijmultiphaseflow.2018.09.010 　
Acceleration-Induced Dynamics of Liquid Films: From Bag Formation to Post-Rupture Peer-reviewed

Ippei Oshima, Shoya Kingetsu, Akira Sou

ILASS Europe 2025　2025/09/03
Atomization Process of a Liquid Film with Co-current Gas Flows: Spanwise Oscillations of the Film after its Rupture

Ippei Oshima, Shoya Kingetsu, Akira Sou

Proceedings of the 34th Annual Conference of The Japan Institute of Energy　2025/07/31

DOI： 10.20550/jietaikaiyoushi.34.0_134 　
Effect of the heated wall on the cavitation phenomenon inside a 2D nozzle Peer-reviewed

Ippei Oshima, Noritsune Kawaharada, Jun Ishimoto

Proceedings of the 12th International Conference on Multiphase Flows (ICMF 2025)　2025/05
Detection of Fish Activity Alterations Pre- and Post-Feeding with Imaging Sonar

Yusuke Horiguchi, Takero Yoshida, Go Eguchi, Ippei Oshima, Yukiyo Kobayashi, Gen Li, Haruka Nishikawa

Proceedings of 9th International Symposium on Aero-aqua Bio-Mechanisms (ISABMEC2024)　2024/11
Visualization of Droplet Behaviours and Numerical Prediction of a Droplet Motion on the Turbine Bucket Peer-reviewed

Ippei Oshima, Mikito Furuichi, Yuya Nakashima, Masahiro Sato

Proc. of the 16th Triennial International Conference on Liquid Atomization and Spray Systems　2024/06
The deformation and atomization process of a planar liquid sheet with the fluctuation of cocurrent air flow Peer-reviewed

Hiroki Kato, Kanato Mori, Akira Sou, Ippei Oshima, Kodai Kato, Kazuaki Matsuura

Proc. of the 16th Triennial International Conference on Liquid Atomization and Spray Systems　2024/06
Effects of Cocurrent Air Velocity Oscillation on the Deformation and Atomization Characteristics of a Planar Liquid Sheet Peer-reviewed

Kanato Mori, Hiroki Kato, Akira Sou, Ippei Oshima, Kodai Kato, Kazuaki Matsuura

Proc. the 23rd Annual Conference of the Institute for Liquid Atomization and Spray Systems -Asia (ILASS-Asia 2023)　2023/10
Mechanistic Model on Droplet Diameter of Air- Blasted Liquid Film Peer-reviewed

Ippei Oshima, Akira Sou

ILASS Europe 2023　2023/09
Experimental comparison between the turbidity and density currents

Minori Kyoi, Shun Nomura, Ippei Oshima, Daisuke Nishiura, Mikito Furuichi, Kazuo Tani

2023/02/26
Publisher: Copernicus GmbH
DOI： 10.5194/egusphere-egu23-14045 　

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&lt;p&gt;Understanding the mechanism of turbidity currents is important for siting submarine cables and pipelines. It is because the turbidity currents can transport a large amount of sediment in long distance that causes severe damages to these buried linear structures. It is not clear why turbidity currents can gain and sustain such a large amount of kinetic energy. One of possibilities to explain this process is a drag reduction which reduces the turbulent energy due to the inclusion of fine particles as previous studies reports. However, the influence of fine particles to their flow characteristics has not been fully elucidated. Thus, in this study, a series of model tests were conducted to compare the horizontal steady flows of silica suspension and NaCl solution in a flume. The test results show that the flow characteristics of silica suspension were different from that of NaCl solution. These differences are considered to be caused by silica particles, and it is suggested that drag reduction by fine particles would be taken place in turbidity currents.&lt;/p&gt;
Prediction model for liquid sheet transversal oscillation

Ippei Oshima, Akira Sou

The 18th International Conference on Flow Dynamics　2021/10/27
Numerical Simulation of a Particle in Air Flow Around a Turbine Blade Peer-reviewed

Ippei Oshima, Mikito Furuichi

ASME 2020 TURBO EXPO　2020/09
Atomization Process of a Planar Liquid Sheet by Co-current Air Flows (Visualization of Liquid Sheet Atomization and Development of Droplet Diameter Model) Peer-reviewed

Ippei Oshima, Akira Sou

Atomization　29　(97)　64-73　2020/07
Publisher:
ISSN： 1341-6022
Bag Formation andBreakup of Planar Liquid Sheet by Cocurrent Air Flows Peer-reviewed

Kazuki OISHI, Tomoki IMAI, Shingo NISHIYAMA, Ippei Oshima, Akira SOU

20th Annual Conference on Liquid Atomization and Spray Systems - Asia　2019/12
Development Status of The Civilian Satellite “Dream Sat 01” Peer-reviewed

The Joint Conf.: 31th International Symposium on Space Technology and Science (31th ISTS), International Symposium on Space Flight Dynamics (26th ISSFD), 8th Nano-Satellite Symposium (8th NSAT)　2017
Breakup Length of Planar Liquid Sheet with Cocurrent Air Flow Peer-reviewed

Ryota Kawabata, Ippei Oshima, Shingo Nishiyama, Akira Sou, Kazuaki Matsuura

The 19th Annual Conference on Liquid Atomization and Spray Systems, Asia　2017
Longitudinal wavelength of oscillating liquid sheet with air flow Peer-reviewed

I. Oshima, A. Sou, R. Kawabata, K. Matsuura

AIAA SciTech Forum - 55th AIAA Aerospace Sciences Meeting　2017
Publisher: American Institute of Aeronautics and Astronautics Inc.
DOI： 10.2514/6.2017-1464 　
Development of CubeSat and Activity on Dream Satellite Project Peer-reviewed

The Joint Conf.: 30th International Symposium on Space Technology and Science (30th ISTS), 34th International Electric Propulsion Conference (34th IEPC), 6th Nano-Satellite Symposium (6th NSAT)　2015
Numerical and Experimental Study on Liquid Sheet Deformation by Air Flow Peer-reviewed

I. Oshima, A. Sou, K. Matsuura

The 13th. International Conference on Liquid Atomization and Spray Systems　2015
Numerical Simulation of Fuel Film Deformation in Gas Turbine Engine

Ippei Oshima, Akira Sou

The 3rd International Symposium of Maritime Sciences　2014

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Misc. 13

Investigation of a Liquid Sheet Atomization Process by Gas Flows

Ippei OSHIMA

JAPANESE JOURNAL OF MULTIPHASE FLOW　38　(3)　220-231　2024/09/15
Publisher: The Japanese Society for Multiphase Flow
DOI： 10.3811/jjmf.2024.t009 　

ISSN： 0914-2843

eISSN： 1881-5790
DX技術を用いた養殖魚モニタリング Invited

吉田毅郎, 西川悠, 李根, 大島逸平, 小林有希代

日本船舶海洋工学会誌KANRIN　113　13-16　2024/03
100 Years of Atomization Research - Prospects for the Future –

AMAGAI Kenji, TOKUOKA Naochika, FUKUZATO Katsuhiko, SUZUKI Koji, KATO Kodai, SAITO Hiroyasu, OSHIMA Ippei, TANAKA Yasue, IKI Norihiko

Nihon Enerugii Gakkai Kikanshi Enermix　102　(1)　2-22　2023/01/20
Publisher: The Japan Institute of Energy
DOI： 10.20550/jieenermix.102.1_2 　

ISSN： 2432-3586

eISSN： 2432-3594
Reviews of the 28th ILASS-Japan Symposium (The Second Day, Room C : Atomization Mechanism Ⅱ)

Ippei Oshima

29　(97)　2020/07
Visualization of Rupture Process of Liquid Film by Droplet Impact

大石一稀, 大島逸平, 今井智貴, 宋明良

航空原動機・宇宙推進講演会講演論文集(CD-ROM)　59th　2019
Atomization Process of a Planar Liquid Sheet by Cocurrent Air Flows (Formation and Breakup of Ligaments after the Rupture of a Bag)

今井智貴, 大石一稀, 西山真悟, 大島逸平, 宋明良

微粒化シンポジウム講演論文集(CD-ROM)　28th　2019
Effects of Gas and Liquid Fluid Properties and Nozzle Geometries on Atomization Process of a Planar Liquid Sheet by Co-current Air Flows

26　(89)　64-70　2017/11
Publisher: 日本液体微粒化学会
ISSN： 1341-6022
Effects of Gas and Liquid Physical Properties and Nozzle Geometries on Breakup Process of a Liquid Sheet by Concurrent Air Flow

25　14-17　2016/12/19
Publisher: 日本液体微粒化学会
ISSN： 1341-6030
並行気流による平面液膜の分裂過程—Breakup Process of Planar Liquid Sheet by Concurrent Air Flow

川畑諒太, 大島逸平, 西山真悟, 宋明良, 松浦一哲

微粒化シンポジウム講演論文集 = The Symposium (ILASS-Japan) on Atomization　25　76-81　2016/12
Publisher: [つくば] : 日本液体微粒化学会
ISSN： 1341-6030
The Civilian Satellite 『Dream Sat 01』 by the Cooperation of Industry and Academia and Civilians Together

60　6p　2016/09/06
Publisher: 日本航空宇宙学会
ISSN： 1884-1945
Visualization Experiments of Planar Liquid Sheet Atomization by Air Flows

24　17-23　2015/12/17
Publisher: 日本液体微粒化学会
ISSN： 1341-6030
Effects of Various Factors on Liquid Sheet Deformation by Air Flow

23　137-142　2014/12/18
Publisher: 日本液体微粒化学会
ISSN： 1341-6030
燃料液膜流の変形過程に関する数値シミュレーション

大島逸平, 宋明良

微粒化シンポジウム講演論文集　22nd　2013

ISSN： 1341-6030

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Books and Other Publications 1

クリーンエネルギー

Ippei Oshima

2024

Presentations 49

気流による液膜の変形・微粒化過程 - 複数の加速度が液膜変形に及ぼす影響 - Invited

大島逸平

同志社大学における研究会　2025/09/22
回転水槽内熱対流における時間位相の同期現象

大島逸平, 河村洋史

日本流体力学会年会2025　2025/09/17
Visualization of Droplet Splashing Process Deviating from Mainstream Air-flow and Effect of Liquid Property on Characteristic of Droplet Splashing

Ippei Oshima, Hiroyasu Saitoh

2nd European Fluid Dynamics Conference (EFDC2)　2025/08/29
Atomization Process of a Liquid Film with Co-current Gas Flows: Spanwise Oscillations of the film after its Rupture

Ippei Oshima, Shoya Kingetsu, Akira Sou

The 34th Annual Conference of the Japan Institute of Energy　2025/08/07
Numerical and Theoretical Study on the Synchronization of the Thermal Oscillation in a Rotating Fluid Annulus

Ippei Oshima, Yoji Kawamura

11th International Conference Engineering of Chemical Complexity (ECC11)　2025/07/30
Experimental study on flow path plugging phenomenon by slurry

Hiroto Kaneko, Yusuke Mukuhira, Noriaki Watanabe, Ryota Tamura, Takayuki, Nonoyama, Ippei Oshima, Shingo Ishihara, Kizuku Kushimoto, Junya Kano, Takatoshi Ito

2025/06/12
Effect of the heated wall on the cavitation phenomenon inside a 2D nozzle

Ippei Oshima, Noritsune Kawaharada, Jun Ishimoto

12th International Conference on Multiphase Flows (ICMF 2025)　2025/05/15
気流から離脱した液滴の壁面衝突過程の可視化と衝突液滴の液膜形成特性

大島逸平, 齊藤寛泰

第33回微粒化シンポジウム　2024/12/17
壁面加熱が2次元ノズル内キャビテーション現象に及ぼす影響

大島逸平, 川原田光典

第33回微粒化シンポジウム　2024/12/17
Detection of Fish Activity Alterations Pre- and Post-Feeding with Imaging Sonar

Yusuke Horiguchi, Takero Yoshida, Go Eguchi, Ippei Oshima, Yukiyo Kobayashi, Gen Li, Haruka Nishikawa

9th International Symposium on Aero-aqua Bio-Mechanisms (ISABMEC2024)　2024/11/26
Elucidation and Modeling of the Atomization Process of a Liquid Film Flow Induced by Co-current Gas Flows

Ippei Oshima, Akira Sou

The 77th Annual APS DFD Annual Meeting　2024/11/24
Study on the Injection Process of Next-Generation Liquefied Fuels

Noritsune Kawaharada, Ippei Oshima

2024/11/20
Atomization Process of Planar Air-blast Atomizer

Ippei Oshima, Akira Sou

2024/11/18
気流式液膜噴射弁の機構論的噴霧粒径予測体系

大島逸平, 宋明良

第52回日本ガスタービン学会定期講演会　2024/10/23
マルチモーダル大規模言語モデルを活用した養殖魚の挙動説明とベンチマークの構築

吉田毅郎, 堀口祐輔, 小林有希代, 大島逸平, 江口剛, 李根, 西川悠, 杉山大祐, 松岡大祐

日本水産学会秋季大会　2024/09/26
Synchronization phenomena of heat transfer inside rotating fluid annulus

Oshima Ippei, Kawamura Yoji

1st European Fluid Dynamics Conference　2024/09/19
Visualization of bubble generation near the heated wall inside a 2D nozzle

Ippei Oshima, Noritsune Kawaharada, Jun Ishimoto

2024/09/05
微粒化現象の数理モデルと同期現象の数理モデル Invited

大島逸平

第92回情報科学談話会　2024/08/30
Visualization and numerical prediction of a droplet motion on the turbine bucket

Ippei Oshima, Mikito Furuichi, Yuya Nakashima, Masahiro Sato

Core-to-core workshop 2024 International workshop on science and technology supporting energy conversion towards carbon neutrality　2024/07/04
Oscillation and atomization process of a liquid film induced by gas flows Invited

Ippei Oshima

Civil engineering seminar series, EPFL　2023/11/24
Study on the Injection Process of Next-Generation Liquefied Fuels

Noritsune Kawaharada, Ippei Oshima

2023/11
気流から離脱して壁面に衝突する液滴挙動の可視化

大島逸平, 斎藤寛泰

日本混相流学会混相流シンポジウム2023　2023/08/24
液体アンモニア噴射におけるノズル内部流動のモデリングに関する一考察

川原田光典, 大島逸平

日本混相流学会混相流シンポジウム2023　2023/08/24
乱泥流における土粒子による抵抗低減効果の実験的検討

興井みのり, 野村瞬, 谷和夫, 大島逸平

第58回地盤工学研究発表会　2023/07/12
液体アンモニア噴射におけるノズル内部流動に関する数値解析

川原田光典, 大島逸平

第31回微粒化シンポジウム　2022/12/15
並行気流による平面液膜のバッグ破断後における縦しわの形成と微粒化過程

金月翔哉, 宋明良, 大島逸平

第31回微粒化シンポジウム　2022/12/15
Study on the Injection Process of Next-Generation Liquified Fuels

Noritsune Kawaharada, Ippei Oshima

2022/11
Experienced-Based Scientific Meeting of Fluid Dynamics

Ippei Oshima, Yasufumi Horimoto

2022/11
Air-blasted liquid film atomization and ammonia atomization studies

Ippei Oshima

KAUST-Tohoku University-Orléans core-to-core workshop　2022/09/26
加速運動による液膜変形過程の数値計算

大島逸平, 宋明良

混相流シンポジウム2022　2022/08/20
タービン動翼における液滴挙動可視化と翼面上の水滴挙動の数値予測

大島逸平, 古市幹人, 中島悠也, 佐藤雅浩

第30回微粒化シンポジウム　2021/12/17
平行気流による平面液膜の変形と微粒化

野尻智輝, 金月翔哉, 大島逸平, 宋明良

第30回微粒化シンポジウム　2021/12/17
バッグ破断後のリムにおけるサブリガメントの形成と分裂過程の高速度画像解析

金月翔哉, 野尻智輝, 宋明良, 大島逸平

第30回微粒化シンポジウム　2021/12/17
凝固現象を伴う先端ダイカストプロセスシミュレーション

佐藤巧実, 石本淳, 仲野是克, 大島逸平, 山田秀明, 佐藤文和

第 35 回数値流体力学シンポジウム　2021/12/14
Experimental study of a droplet behaviour on the turbine blade with gas flow

2021/08/24
Atomization Process of a Planar Liquid Sheet by Cocurrent Air Flows (Visualization of the Liquid Sheet Atomization and the Model of Droplet Sizes)

Ippei Oshima, Akira Sou

28th ILASS-Japan Symposium　2019/12
Atomization Process of a Planar Liquid Sheet by Cocurrent Air Flows (Formation and Breakup of Ligaments after the Rupture of a Bag)

Tomoki IMAI, Kazuki OISHI, Shingo NISHIYAMA, Ippei OSHIMA, Akira SOU

28th ILASS-Japan Symposium　2019/12
液滴衝突による液膜破断過程の可視化実験

大石一稀, 大島逸平, 今井智貴, 宋明良

第59回航空原動機・宇宙推進講演会　2019/03/06
Effects of Gas and Liquid Fluid Properties and Nozzle Geometries on Atomization Process of a Planar Liquid Sheet by Co-current Air Flows

大島逸平, 宋明良

微粒化 = Atomization : journal of the ILASS-Japan　2017/11
市民衛星Dream Sat01の試み

大島逸平, 菊池秀明, 田原弘一, 平井良太, 池田知行, 竹内新, 阿尾生地郎, 酒見議一, Dream Satellite, Project Team,AstreX関西衛星会

宇宙科学技術連合講演会　2017/10
Breakup Process of Planar Liquid Sheet by Concurrent Air Flow

川畑諒太, 大島逸平, 西山真悟, 宋明良, 松浦一哲

微粒化シンポジウム講演論文集　2016/12/19
Effects of Gas and Liquid Physical Properties and Nozzle Geometries on Breakup Process of a Liquid Sheet by Concurrent Air Flow

大島逸平, 川畑諒太, 西山真悟, 宋明良, 松浦一哲

微粒化シンポジウム講演論文集　2016/12/19
The Civilian Satellite 『Dream Sat 01』 by the Cooperation of Industry and Academia and Civilians Together

大島逸平, 田原弘一, 菊池秀明, 平井良太, 池田知行, 竹内新, 阿尾生地郎, 飯島広行, 山本泰三, 蒲谷直樹, 酒見議一, 石田健二, 奥村結, 西川裕二, 南昌平, 三浦一仁, 洪守八

宇宙科学技術連合講演会講演集　2016/09/06
Visualization Experiments of Planar Liquid Sheet Atomization by Air Flows

大島逸平, 川畑諒太, 宋明良

微粒化シンポジウム講演論文集　2015/12/17
光半導体素子の宇宙技術実証衛星Dream sat 01

平井良太, 菊池秀明, 田原弘一, 池田知行, 阿尾生地郎, 飯島広行, 竹内新, 金野修, 山本泰三, 蒲谷直樹, 石田健二, 酒見義一, 大島逸平

第59回宇宙科学技術連合講演会　2015/10
Effects of Various Factors on Liquid Sheet Deformation by Air Flow

大島逸平, 宋明良

微粒化シンポジウム講演論文集　2014/12/18
最新電子デバイスのキューブサットによる宇宙実証

平井良太, 菊池秀明, 田原弘一, 池田知行, 阿尾生地郎, 飯島広行, 竹内新, 金野修, 山本泰三, 蒲谷直樹, 大島逸平

第58回宇宙科学技術連合講演会　2014/11
Numerical Simulation of Fuel Film Deformation

大島逸平, 宋明良

微粒化シンポジウム講演論文集　2013/12
ICLASS 2024 レビュー (グループ5) Invited

大島逸平

日本液体微粒化学会 ICLASS2024レビュー報告会　2024/10/11

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Industrial Property Rights 2

判断支援システム、判断支援方法及び判断支援プログラム

吉田毅郎, 西川悠, 小林有希代, 吉岡孝史, 松岡大祐, 李根, 大島逸平

Property Type: Patent
透明懸濁液、及びその利用

大島逸平, 西浦泰介, 野村瞬, 古市幹人

Property Type: Patent

Research Projects 11

気流旋回による平面液膜流の3次元流動機構解明

大島逸平

Offer Organization: 日本学術振興会

System: 科学研究費助成事業

Category: 若手研究

Institution: 東北大学

2024/04/01 - 2027/03/31
A Coupled Scientific Approach to Peer-to-Peer Multiphase Hydrogen Energy Systems

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research

Category: Grant-in-Aid for Scientific Research (B)

Institution: Tohoku University

2023/04/01 - 2026/03/31
液化ガスの微粒化機構解明

大島逸平

Offer Organization: 東電記念財団

System: 研究助成（基礎研究）

Institution: 流体科学研究所

2023/04 - 2026/03
Elucidation of ground infiltration failure mechanism by high-resolution transparent ground experiments and large-scale numerical simulation

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research

Category: Grant-in-Aid for Scientific Research (B)

Institution: Japan Agency for Marine-Earth Science and Technology

2022/04/01 - 2025/03/31
Elucidation of ground infiltration failure mechanism by high-resolution transparent ground experiments and large-scale numerical simulation

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)

Category: Grant-in-Aid for Scientific Research (B)

Institution: Japan Agency for Marine-Earth Science and Technology

2022/04 - 2025/03
気流中の液膜破断現象の解明とモデル化

大島逸平

Offer Organization: 日本学術振興会

System: 科学研究費助成事業若手研究

Category: 若手研究

Institution: 東北大学

2021/04/01 - 2024/03/31

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ガスタービンの経験則的開発手法からの脱却のため、微粒化制御技術の確立が求められている。これまで、申請者はガスタービン噴射弁より噴射された液膜流が、気流により変形微粒化して液滴に至る過程を不安定性理論に基づきモデル化することで、噴霧液滴の平均粒径の予測を行った。しかし、この分裂機構の1つである、液膜が袋状に拡がり分裂するバッグ分裂からできる液滴径分布がどのように決定されるのか明らかではない。そこで本研究では、バッグ部の液膜厚さの空間分布に着目し、バッグの分裂メカニズムおよび、バッグ分裂起因の噴霧液滴の粒度分布の決定メカニズム解明の実現とともに機構論的バッグ分裂モデルの構築に挑戦する。 <BR> 本研究では、液膜厚さの空間分布を定量的に測ることが重要である。そこで、今年度は液膜の厚さ分布を計測するために使用する光学系の検討を行い、背景型シュリーレン法の導入を進めている。構築した光学系をもちいて透明な物質の厚さを計測できるのかどうかを明らかにするため、ガラス板、アクリル板、シャボン膜を用意し、それらのシュリーレン画像を撮影した。 <BR> また、計測したシュリーレン画像を処理するコードを作成するにあたり、シュリーレン画像をもとに厚さを算出する方法について検討を進めている。これらの検討をもとに、画像処理コードを作成し、どういった条件であれば今回検討する方法で液膜厚さを計測できるか、その計測限界がどこにあるのか調査を進めている。
液化燃料の噴射口内部流動の可視化

大島逸平

Offer Organization: 公益財団法人スズキ財団

System: ２０２２年度科学技術研究（若手）

Institution: 東北大学流体科学研究所

2023/04 - 2024/03
体験型流体研究会 Competitive

大島逸平, 堀本康文

Offer Organization: 東北大学流体科学研究所

System: 2022年度公募共同研究

Category: 一般公募共同研究

Institution: 東北大学

2022/04 - 2023/03
気流から離脱した液滴の壁面衝突現象の可視化 Competitive

大島逸平

Offer Organization: 日本液体微粒化学会

System: 2022 年度微粒化研究推進助成

Institution: 東北大学流体科学研究所未到エネルギー研究センター

2022/04 - 2023/03
Dynamic mechanism of turbidity current for long-distance sediment transport through integration of numerical science and high resolution measurement technique

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research Fund for the Promotion of Joint International Research (Fostering Joint International Research (B))

Category: Fund for the Promotion of Joint International Research (Fostering Joint International Research (B))

Institution: Japan Agency for Marine-Earth Science and Technology

2019/10 - 2023/03
革新的ガスタービン実現に向けた燃料液膜流の微粒化機構解明 Competitive

大島逸平

Offer Organization: 日本学術振興会

System: 研究活動スタート支援

2019/08 -

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Teaching Experience 5

Exercises in Computer-AidedProblem Solving　Tohoku University
分野横断セミナ　Tohoku University
Seminar I　Tohoku University
Seminar II　Tohoku University
乱流伝熱特論　Osaka University