UKAI Takahiro

写真a

Title

Associate Professor

Research Fields, Keywords

Compressible flow, Flow visualization, Flow control

Profile

I was awarded a B.Eng. in Mechanical Engineering from Aitch Institute of Technology, Japan in 2005, and spent five years working for a company which develops the hydraulic machines before starting my Master project. During this period, I have developed a compact hydraulic solenoid valve. In my Master and Ph.D. projects, I worked on three research topics; the development of the pressure measurement techniques using a ballistic range facility for sonic boom research, shock-turbulence interaction phenomenon for supersonic transports, and flow mechanism within a combustion chamber for scramjet engines. I was awarded a Ph.D. in Aerospace Engineering from Tohoku University, Japan in 2015. I then took Marie-curie research fellowship from European Commission and worked on flow control techniques by laser-induced gas breakdown in The University of Glasgow for two years. I joined Osaka Institute of Technology as Assistant Professor in 2018, and am currently Associate Professor. My research interesting is gas-solid two phase flow under planetary conditions, flow diagnostics techniques based on Schlieren photograph, and Physics Informed Neural Networks (PINNs).
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Graduate School 【 display / non-display 】

  • Tohoku University  Graduate School, Division of Engineering  Aerospace Engineering  Master's Course  Completed  JAPAN

  • Tohoku University  Graduate School, Division of Engineering  Aerospace Engineering  Doctor's Course  Completed  JAPAN

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Committee Memberships 【 display / non-display 】

  • 2016.01
    -
    2016.07

      Local organising committee

  • 2017.09
    -
    2018.03

      Local organising committee

  • 2018.11
    -
    Now

     

  • 2019.04
    -
    2020.05

      Local organising committee

  • 2020.04
    -
    2021.03

     

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Research field 【 display / non-display 】

  • Flow visualization

  • Compressible flow

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Qualification acquired 【 display / non-display 】

  • Air Pressure Device Assembly Skill Person (highest quality, 1-2 class)

  • Hydraulic System Adjustment Skill Person (highest quality, 1-2 class)

  • Machine and Plant Drafting Skill Person (1-2 class)

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Papers 【 display / non-display 】

  • Impact of atmospheric variations on sonic boom loudness over 10 years of simulated flights

    R. Iura, T. Ukai, H. Yamashita, B. Kern, T. Misaka, S. Obayashi  ( Multiple Authorship with a faculty member from an overseas university )

    Journal of Acoustical Society of America   156 ( 3 ) 1529 - 1542   2024.09

    Research paper (scientific journal)  English

    DOI

  • Initial particle ejection behaviours due to a hypersonic jet impingement at different high-nozzle pressure ratios in rarefied atmospheric conditions

    T. Ukai, S. Subramanian, A. Wilson, B. Craig, K. Kontis  ( Multiple Authorship with a faculty member from an overseas university )

    Acta Astronautica   222   126 - 135   2024.06

    Research paper (scientific journal)  English

    DOI

  • Spatial resolution improvement by a super-resolution technique depending on training process in the Background-Orientated Schlieren analyses

    K. Ota, T. Ukai, T. Wakai  ( Multiple Authorship )

    Physics of Fluids   35 ( 126103 )   2023.12

    Research paper (scientific journal)  English

    DOI

  • The particle erosion and diffusion behaviours due to an air-jet impingement on a granular bed covering a simplified terrain model

    Rika Hata, Takahiro Ukai, Ryo Takioka  ( Multiple Authorship )

    Acta Astronautica   202   535 - 549   2023.01

    Research paper (scientific journal)  English

    DOI

  • Flexibility and versatility enhancements due to a portable optical system for the Background-Oriented Schlieren techniques

    Takahiro Ukai, Takuma Kuroda  ( Multiple Authorship )

    Journal of Visualization     2022.12

    Research paper (scientific journal)  English

    DOI

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Review Papers 【 display / non-display 】

  • The Effect of a Crater on the Velocity of Regolith Ejecta During Plume-Regolith Interactions

    B. Craig, A. Wilson, T. Ukai, K. Kontis  ( Joint Work )

    Conference proceedings of 20th International Conference on Flow Dynamics     2023.11

    Introduction and explanation (international conference proceedings)  English

  • Resolution Enhancement due to the EDSR Method for BOS Analyses

    K. Ota, T. Ukai  ( Single Work )

    Proceedings of The 13th Pacific Symposium on Flow Visualization and Image Processing     2022.08

    Summary of the papers read (international conference)  English

  • Time-Resolved Three-Dimensional Density Measurement for an Asymmetrical Unsteady Supersonic Impinging Jet using a Fibre BOS Technique

    T. KURODA, M. KOBAYASHI, T. UKAI  ( Single Work )

    Proceedings of The 13th Pacific Symposium on Flow Visualization and Image Processing     2022.08

    Summary of the papers read (international conference)  English

  • The analysis of sonic boom propagation along actual flight route based on past 10 years of meteorological data

    井浦玲伊, 鵜飼孝博, YAMASHITA Hiroshi, KERN Bastian, 三坂孝志, 大林茂  ( Single Work )

    流体力学講演会/航空宇宙数値シミュレーション技術シンポジウム講演集(CD-ROM)   54th-40th   2022

    Introduction and explanation (bulletin of university, research institution)  Japanese

    J-GLOBAL

  • The characteristics of a physical model based schlieren image velocimetry

    鵜飼孝博  ( Single Work )

    流体力学講演会/航空宇宙数値シミュレーション技術シンポジウム講演集(CD-ROM)   54th-40th   2022

    Introduction and explanation (bulletin of university, research institution)  Japanese

    J-GLOBAL

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Research Grants and Projects 【 display / non-display 】

  • Estimation for regolith diffusion due to impinging hot plume

    Japan Society for the Promotion of Science  Bilateral Joint Research Projects/Seminars

    Project Year：2021.04  -  2023.03 

  • The development of a pressure estimation method based on Schlieren coupling of CFD

    Japan Society for the Promotion of Science  KAHENHI

    Project Year：2020.04  -  2023.03 

  • Project Year：2015.08  -  2017.07 

  • Project Year：2013.11  -  2014.09 

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Presentations 【 display / non-display 】

  • “A shock cell deformation due to a perpendicular jet-jet interaction at a low-pressure atmospheric condition

    R. Takioka, T. Ukai, A. Wilson, K. Kontis

    International conference  9th Edition of the space propulsion conference  Oral Presentation(general)

    2024.05
    　
    　

  • 非圧縮性流体に対する3次元流速場推定に関する研究

    Internal meeting  Oral Presentation(general)

    2023.12
    　
    　

  • The experimental and numerical investigations of pressure rise-time effects in shock-turbulence interaction

    Y. Arakawa, T. Ukai, K. Ohtani

    International conference  20th International Conference on Flow Dynamics  Poster (general)

    2023.11
    　
    　

  • The Effect of a Crater on the Velocity of Regolith Ejecta During Plume-Regolith Interactions

    B. Craig, A. Wilson, T. Ukai, K. Kontis

    International conference  20th International Conference on Flow Dynamics  Oral Presentation(general)

    2023.11
    　
    　

  • Sonic boom variation in realistic atmospheres

    H. Yamashita, B. Kern, T. Ukai, R. Iura, T. Misaka, S. Obayashi

    International conference  20th International Conference on Flow Dynamics  Poster (general)

    2023.11
    　
    　

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