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 】

  • Flow structure manipulation in a supersonic jet impinging on a perpendicular flat plate with varied fluidic injection angles

    T. Ukai, T. Kishida, R. Takioka  ( Multiple Authorship )

    Journal of Aerospace Engineering   38 ( 5 )   2025.06

    Research paper (scientific journal)  English

    DOI

  • 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

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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 flow control technique for impinging pressure reduction in plume surface interaction (PSI)

    S. Hotta, A. Wilson, B. Craig, T. Ukai, C. White, K. Kontis

    International conference  The 3rd International Conference on Flight Vehicles, Aerothermodynamics and Re-entry (FAR)  Oral Presentation(general)

    2025.05
    　
    　

  • Characterizing atmospheric conditions for sonic boom loudness

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

    International conference  21st International Conference on Flow Dynamics  Poster (general)

    2024.11
    　
    　

  • Experimental and numerical studies on the correlation between pressure rise time and the turbulence length scale in shock-turbulence interaction

    Y. Arakawa, T. Ukai, K. Ohtani

    International conference  21st International Conference on Flow Dynamics  Poster (general)

    2024.11
    　
    　

  • 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
    　
    　

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