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High-fidelity transonic buffet simulations on heterogenous exa-scale supercomputers

Research Project

Project/Area Number 22KF0421
Project/Area Number (Other) 22F22059 (2022)
Research Category

Grant-in-Aid for JSPS Fellows

Allocation TypeMulti-year Fund (2023)
Single-year Grants (2022)
Section外国
Review Section Basic Section 24010:Aerospace engineering-related
Research InstitutionJapan Aerospace EXploration Agency

Principal Investigator

橋本 敦  国立研究開発法人宇宙航空研究開発機構, 航空技術部門, 主幹研究開発員 (30462899)

Co-Investigator(Kenkyū-buntansha) LUSHER DAVID  国立研究開発法人宇宙航空研究開発機構, 航空技術部門, 外国人特別研究員
Project Period (FY) 2023-03-08 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥2,200,000 (Direct Cost: ¥2,200,000)
Fiscal Year 2023: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 2022: ¥1,100,000 (Direct Cost: ¥1,100,000)
KeywordsCFD / 数値流体力学 / 圧縮性流体力学 / 遷音速流 / バフェット / 衝撃波 / LES / GPU / Numerical Simulation / Code-generation / Compressible Flow / Aerospace / Supercomputer
Outline of Research at the Start

In this project, we perform large-scale CFD simulations of transonic airfoil buffet on exa-scale supercomputers. Our aim is to understand the 3D mechanisms that govern the buffet aerodynamic instability for transonic flight. We extend the OpenSBLI CFD solver to investigate the 3D buffet phenomena.

Outline of Annual Research Achievements

本研究では、外国人特別研究員のOpenSBLIの技術(ヘテロジニアス・コンピュータに対応した流体解析コード自動生成システム)と、受入研究者の流体解析技術及び日本のスパコン利用技術(富岳やJAXAのJSS3)を組み合わせることで、世界に先駆けて3次元翼における遷音速バフェットの高忠実度シミュレーションを実現し、主に下記の4つの成果が得られた。
A)2次元バフェット解析におけるスパン方向領域の大きさの影響を明らかにした。2次元バフェット解析は、スパン方向の領域に強く影響を受けることがわかり、領域に影響しない結果を得るには少なくともアスペクト比(翼の流れ方向長さとスパン方向長さの比)=0.1が必要であることがわかった。
B) バフェット解析における上流側の境界層の状態(乱流、層流、遷移)の影響を明らかにした。上流側の境界層の状態を乱流、層流、遷移と変化させると、衝撃波の構造、振動、空気力が大きく影響を受けることがわかった。
C)高忠実度解析により、後退角のない翼における3次元バフェットセル現象を再現した。アスペクト比が2と3のケースで、バフェットセル/ストールセルと呼ばれる不安定現象(衝撃波が波打つ形状になる現象)が発生することがわかった。
D)高忠実度解析と低忠実度解析(RANS、URANS、GSA)と比較して、低忠実度解析の有効性と限界を明らかにした。2次元バフェットに対して、高忠実度解析と低忠実度解析(RANS、URANS、GSA)と比較し、遷音速バフェットの主要な衝撃波周波数が一致することを確認した。

Report

(2 results)
  • 2023 Annual Research Report
  • 2022 Annual Research Report
  • Research Products

    (12 results)

All 2023 2022 Other

All Int'l Joint Research (2 results) Journal Article (3 results) (of which Peer Reviewed: 1 results) Presentation (7 results) (of which Int'l Joint Research: 2 results,  Invited: 2 results)

  • [Int'l Joint Research] NASA Langley Research Center(米国)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] University of Southampton(英国)

    • Related Report
      2022 Annual Research Report
  • [Journal Article] Numerical Study of Compressible Wall-Bounded Turbulence ? the Effect of Thermal Wall Conditions on the Turbulent Prandtl Number in the Low-Supersonic Regime2023

    • Author(s)
      Lusher David J.、Coleman Gary N.
    • Journal Title

      International Journal of Computational Fluid Dynamics

      Volume: 36 Issue: 9 Pages: 797-815

    • DOI

      10.1080/10618562.2023.2189247

    • Related Report
      2023 Annual Research Report 2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Automatic Code-Generation to Enable High-Fidelity Simulations of Multi-Block Airfoils on GPUs2023

    • Author(s)
      Lusher David J.、Zauner Markus、Sansica Andrea、Hashimoto Atsushi
    • Journal Title

      AIAA SCITECH 2023 Forum

      Volume: -

    • DOI

      10.2514/6.2023-1222

    • Related Report
      2022 Annual Research Report
  • [Journal Article] RANS Sensitivity Study and Global Stability Analysis of the NASA Common Research Model High-Lift Configuration2023

    • Author(s)
      Zauner Markus、Sansica Andrea、Kojima Yoimi、Lusher David J.、Hashimoto Atsushi
    • Journal Title

      AIAA SCITECH 2023 Forum

      Volume: -

    • DOI

      10.2514/6.2023-1568

    • Related Report
      2022 Annual Research Report
  • [Presentation] High-fidelity simulations of transonic buffet on wide-span airfoils in the OpenSBLI automatic code-generation framework on GPUs2023

    • Author(s)
      D.J. Lusher, A. Sansica, M.Zauner, A. Hashimoto
    • Organizer
      第55回流体力学講演会/第41回航空宇宙数値シミュレーション技術シンポジウム
    • Related Report
      2023 Annual Research Report
  • [Presentation] Mach Evolution of the Cylinder Wake Flow Bifurcations2023

    • Author(s)
      A. Sansica, D.J. Lusher, A.Hashimoto
    • Organizer
      International Symposium on Shockwaves (ISSW34)
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Training course: OpenSBLI automatic code- generation framework2023

    • Author(s)
      D.J. Lusher, et al
    • Organizer
      UK Turbulence Consortium, OpenSBLI/OPS training workshop
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] High-fidelity simulations of wide- span transonic airfoil buffet on multi-GPUs using automatic code-generation2023

    • Author(s)
      D.J. Lusher, A. Sansica, A. Hashimoto
    • Organizer
      第37回数値流体力学シンポジウム
    • Related Report
      2023 Annual Research Report
  • [Presentation] Automatic Code-Generation to Enable High-Fidelity Simulations of Multi-Block Airfoils on GPUs2023

    • Author(s)
      DJ Lusher
    • Organizer
      NASA Langley Research Center
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] Towards high-fidelity transonic buffet simulations by using an automatic CFD code-generation system on heterogeneous exa-scale supercomputers2022

    • Author(s)
      DJ Lusher, A Sansica, A Hashimoto
    • Organizer
      第54回流体力学講演会/第40回航空宇宙数値シミュレーション技術シンポジウム
    • Related Report
      2022 Annual Research Report
  • [Presentation] Automated code-generation for high-fidelity airfoil simulations on heterogeneous HPC architectures2022

    • Author(s)
      DJ Lusher, A Sansica, A Hashimoto
    • Organizer
      SuperComputing conference 22
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research

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Published: 2022-04-28   Modified: 2024-12-25  

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