MIYAJI Koji

Organization

Faculty of Engineering, Division of Systems Research

Title

Associate Professor

Date of Birth

1970

Research Fields, Keywords

Fluid dynamics, Compressible fluid dynamics, Computational fluid dynamics, Flight dynamics, Aeroelastic dynamics, Computational engineering and science

Mail Address

E-mail address



Graduating School 【 display / non-display

  •  
    -
    1992

    Nagoya University   Faculty of Engineering   Department of aeronautics   Graduated

Graduate School 【 display / non-display

  •  
    -
    1997

    The University of Tokyo  Graduate School, Division of Engineering  Department of Aerospace engineering  Doctor Course  Completed

  •  
    -
    1994

    The University of Tokyo  Graduate School, Division of Engineering  Department of Aerospace Engineering  Master Course  Completed

Degree 【 display / non-display

  • Doctor of Engineering -  The University of Tokyo

External Career 【 display / non-display

  • 1997.04
    -
    1999.03

    Research fellow of the center of excellence (COE) at the Institute of Space and Astronautical Science   Researcher  

Academic Society Affiliations 【 display / non-display

  •  
     
     
     

    Japan Society for Aeronautical and Space Sciences

  •  
     
     
     

    Japan Society of Mechanical Engineering

  •  
     
     
     

    Japan Socieyt of Fluid Mechanics

  •  
     
     
     

    American Institute of Aeronautics and Astronautics

Field of expertise (Grants-in-aid for Scientific Research classification) 【 display / non-display

  • Computational Engineering and Science

  • Thermal engineering

  • Fluid engineering

  • Aerospace engineering

 

Thesis for a degree 【 display / non-display

  • Numerical Analysis of Shock Wave Reflection and Interaction Using Unstructured Solution Adaptive Grids

     

      1997.03

    Doctoral Thesis   Single Work

    DOI

  • デルタ翼の空力特性に及ぼすTrailing-Edge Lateral Blowingの効果

    宮路 幸二 

      1994.03

    Master Thesis   Single Work

     View Summary

    東京大学大学院 工学系研究科 航空宇宙工学専攻  デルタ翼の新たな空力特性改善手法として翼付近からの噴き出しを提案し、その効果を実験的、数値的に確認した。また、風洞実験との比較の過程において風洞側壁境界層がデルタ翼まわりの流れに影響を与えることを見出し、数値計算によりその影響を定量的に議論した。

Papers 【 display / non-display

  • Stability of Split-Form Flux-Reconstruction Schemes for Airfoil Flow Simulation with High-Order Mesh

    T. Watanabe, Y. Abe, T. Haga, R. Takaki, A. Oyama,T. Nonomura and K. Miyaji

    ICCFD10-207     2018.07

    Joint Work

  • Treatment of Discontinuity in Intrusive Polynomial Chaos for Uncertainty Quantification of a Nozzle Flow in CFD

    K. Miyaji, T. Inoue

    2018 Asia-Pacific International Symposium on Aerospace Technology     2018.06

    Joint Work

     View Summary

    K. Miyaji, T. Inoue, “Treatment of Discontinuity in Intrusive Polynomial Chaos for Uncertainty Quantification of a Nozzle Flow in CFD”, Proc. 2018 Asia-Pacific International Symposium on Aerospace Technology (USB), 6 pages, Oct. 2018.

  • Stable, non-dissipative, and conservative flux-reconstruction schemes in split forms

    Yoshiaki Abe, Issei Morinaka, Takanori Haga, Taku Nonomura, Hisaichi Shibata, Koji Miyaji

    Journal of Computational Physics   353   193 - 227   2018.01  [Refereed]

    Joint Work

    Web of Science DOI

  • Report on APISAT-2017 in Seoul

    MIYAJI Koji

    Aeronautical and Space Sciences Japan ( THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES )  66 ( 10 )   321 - 322   2018

    Single Work

    DOI CiNii

  • Uncertainty Quantification of Quasi-1D Flow by Polynomial Chaos Expansion Using Wavelet Basis

    Inoue Takumi, Miyaji Koji, Kawamura Yasumi

    JOURNAL OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES ( THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES )  66 ( 6 )   159 - 166   2018

    Joint Work

     View Summary

    <p>A new scheme for the polynomial chaos expansion (PCE) is developed and tested to quantify the propagation of the input uncertainty in CFD. The Haar wavelet is used as basis for the PCE instead of globally continuous, orthogonal polynomials to properly represent the strong discontinuity such as a shock wave. We further extended the method to inputs with arbitrary probability distribution functions (PDF), although the natural application of the Haar wavelet is the uniform PDF. A transonic nozzle flow with an uncertainty in the nozzle-exit pressure is simulated. The wavelet basis well reproduces the Monte Carlo simulations at a single execution of the program, unlike the multi-element (ME) PCE developed in the previous report. But the quantitative agreements of the statistics are better obtained by the result using ME-PCE. </p>

    DOI CiNii

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Preferred joint research theme 【 display / non-display

  • Aeroelastic numerical simulations

  • Numerical fluid simulations from incompressible flows to supersonic flows

Past of Collaboration and Commissioned Research 【 display / non-display

  • Prediction of the Performance of Turbo Charger

    Funded Research offered by Enterprises  

    Project Year: 2005.04  -  2009.03 

  • Aerodynamic Characteristics of External Apparatus of Aircraft

    Funded Research offered by Enterprises  

    Project Year: 2003.04  -  2004.03