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Turbulence simulation around complex geometries with high-order low-dissipative scheme

Research Project

Project/Area Number 19K15205
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 24010:Aerospace engineering-related
Research InstitutionTohoku University

Principal Investigator

Abe Yoshiaki  東北大学, 流体科学研究所, 助教 (40785010)

Project Period (FY) 2019-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2020: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2019: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Keywords圧縮性流体 / 高次精度手法 / 非構造格子 / 高次精度非構造スキーム / CFD / 複雑形状 / 流束再構築法 / 流体力学 / GPU
Outline of Research at the Start

航空宇宙工学分野において,複雑な形状を有する物体周りの流れやそれに起因する音響場を正確に理解する数値解析は,精密な設計が求められる環境適合性の高い航空宇宙機の開発において必要不可欠な技術である.本研究では,より複雑な形状周りの非定常乱流解析が可能となる数値解析手法を構築し,その有効性を実証する事を狙う.そのために,圧縮性流体の非構造高次精度離散化手法と,最新の計算機アーキテクチャ(Graphic Processing Unit: GPU)の双方を用いた枠組みを構築する.

Outline of Final Research Achievements

This study performs compressible turbulence simulation around complex geometries, e.g., flows around aircraft, using the high-order scheme with unstructured grid (more specifically, flux-reconstruction scheme: FR). The objective of this study is to demonstrate an applicability of the FR scheme to practical complex geometries based on the evaluation of numerical stability and accuracy. The simulation targets were aircraft landing gear and low-pressure turbine blade of aircraft engines, and the results indicated that the simulation using the present stabilization techniques becomes unstable on tetrahedral cells with second-order accurate shape function, which will be left as a future problem. Furthermore, the FR scheme has been extended to the use of variable computational architectures, and the efficient implementation for the vector computer were demonstrated using NEC SX-Aurora in this study.

Academic Significance and Societal Importance of the Research Achievements

本研究では,航空機周りの流れに代表される複雑な形状周りの圧縮性流体に対し,物体の形状表現に優れた非構造格子による高精度の数値解析手法(流束再構築法)を適用することで数値安定性と精度を検証し,同手法の実用問題への適用可能性を示した.航空機着陸脚やエンジン低圧タービン翼周りの複雑な流れ場を流束再構築法により高精度に解析可能であることを実証した一方で,このような複雑な物体周りでは計算の不安定性が残されることも課題として示された.また,同手法を様々な計算機環境で実行可能となるよう拡張し,今後の計算機技術の進歩に合わせて更に高い精度で圧縮性流体を解析する基盤が整ったと言える.

Report

(3 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • Research Products

    (13 results)

All 2020 2019 Other

All Int'l Joint Research (3 results) Journal Article (1 results) (of which Peer Reviewed: 1 results) Presentation (9 results) (of which Int'l Joint Research: 7 results,  Invited: 1 results)

  • [Int'l Joint Research] Imperial College London(英国)

    • Related Report
      2019 Research-status Report
  • [Int'l Joint Research] Texas A&M University(米国)

    • Related Report
      2019 Research-status Report
  • [Int'l Joint Research] Concordia University(カナダ)

    • Related Report
      2019 Research-status Report
  • [Journal Article] Boundary variation diminishing algorithm for high‐order local polynomial‐based schemes2020

    • Author(s)
      Abe Yoshiaki、Sun Ziyao、Xiao Feng
    • Journal Title

      International Journal for Numerical Methods in Fluids

      Volume: 93 Issue: 3 Pages: 892-907

    • DOI

      10.1002/fld.4899

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Presentation] Simulations of Flow over Low-Pressure Turbine Blades with PyFR2020

    • Author(s)
      Yoshiaki Abe
    • Organizer
      PyFR Symposium 2020
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] BVD原理に基づくβ可変THINC法による 衝撃波捕獲スキーム2020

    • Author(s)
      脇村 尋, Deng Xi, 阿部圭晃, 肖鋒
    • Organizer
      第34回数値流体力学シンポジウム
    • Related Report
      2020 Annual Research Report
  • [Presentation] High-fidelity Flow Simulation around a Low-pressure Turbine Blade and Cross-platform Implementation with PyFR2020

    • Author(s)
      Yoshiaki Abe, Freddie D. Witherden, Kazuhiko Komatsu, Brian C. Vermeire, Peter E. Vincent, Kozo Fujii
    • Organizer
      Seventeenth International Conference on Flow Dynamics
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Dynamics of Wake-Vortices Deflection Over an Airfoil Using Active Morphing Flaps2020

    • Author(s)
      Yoshiaki Abe, Takayuki Konishi, Tomonaga Okabe
    • Organizer
      73rd Annual Meeting of the APS Division of Fluid Dynamics
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 低レイノルズ数円柱後流に置かれた二次元剛体翼の振動特性2020

    • Author(s)
      長谷沼毅, 阿部圭晃, 岡部朋永
    • Organizer
      第34回数値流体力学シンポジウム
    • Related Report
      2020 Annual Research Report
  • [Presentation] High-performance Implementation of Inlet Turbulence Generation for GPU-based Parallel Computation2019

    • Author(s)
      Yoshiaki Abe, Freddie D. Witherden, Giorgio Giangaspero, Brian C. Vermeire, Arvind S. Iyer, Peter E. Vincent
    • Organizer
      16th International Conference on Flow Dynamics
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Towards Fluid-structure Interaction using Assumed Mode Deformation Approach2019

    • Author(s)
      Yoshiaki Abe, Shoji Iori, Tomonaga Okabe
    • Organizer
      16th International Conference on Flow Dynamics
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Numerical Simulation of Wake Deflection Control around NACA0012 Airfoil using Active Morphing Flaps2019

    • Author(s)
      Takayuki Konishi, Yoshiaki Abe, Tomonaga Okabe
    • Organizer
      16th International Conference on Flow Dynamics
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Effects of Fiber Property on Composite Wing Design Evaluated by Multiscale Analysis2019

    • Author(s)
      Shugo Date, Yoshiaki Abe, Takeki Yamamoto, Tomonaga Okabe
    • Organizer
      16th Japan International SAMPE Symposium & Exhibition
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research

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Published: 2019-04-18   Modified: 2022-01-27  

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