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Physical law and modeling of compressible separated flows using high-fidelity spatio-temporal large-scale data

Research Project

Project/Area Number 21H01523
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 24010:Aerospace engineering-related
Research InstitutionTohoku University

Principal Investigator

Kawai Soshi  東北大学, 工学研究科, 教授 (40608816)

Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥17,160,000 (Direct Cost: ¥13,200,000、Indirect Cost: ¥3,960,000)
Fiscal Year 2023: ¥6,110,000 (Direct Cost: ¥4,700,000、Indirect Cost: ¥1,410,000)
Fiscal Year 2022: ¥5,720,000 (Direct Cost: ¥4,400,000、Indirect Cost: ¥1,320,000)
Fiscal Year 2021: ¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Keywords乱流境界層 / 高レイノルズ数流れ / 圧縮性流体 / LES / データ駆動科学 / 圧縮性熱流体
Outline of Research at the Start

本研究では、航空機の性能や安全性に大きな影響を持つ圧縮性乱流境界層現象に対し、開発してきた高次精度・圧縮性流体解析コードと最新鋭のスパコンを駆使した大規模直接数値解析から、複雑流体現象を高忠実に再現する時空間大規模データベースを構築する。また構築する高忠実な大規模データベースの理論的およびデータ駆動的アプローチの両面を駆使した多角的解析から、圧縮性乱流境界層現象の物理メカニズムや物理法則を明らかにし、航空機などの圧縮性高レイノルズ数流れに高忠実な数値解析を適用可能とする汎用性の高い物理モデルを確立する。

Outline of Final Research Achievements

This study investigated a wall modeling in large-eddy simulation (LES) that enables high-fidelity simulations of compressible separated turbulent boundary layers with shock waves and wall heat fluxes at high Reynolds numbers, which have a significant impact on aerodynamics and the safety of aircraft and rockets. Based on large-scale direct numerical simulation databases, the details of the compressible flows with shock waves and wall heat fluxes are analyzed, and a wall model is developed based on the obtained knowledge. Using the wall model, low-frequency self-excited oscillation phenomena caused by shock waves and separated turbulent boundary layers in an over-expanded nozzle with wall heat flux at a high Reynolds number were investigated to validate the developed wall-modeled LES.

Academic Significance and Societal Importance of the Research Achievements

航空機やロケット開発の設計上流段階から信頼できる機体設計を実現するため,高忠実なLESの設計開発への展開に対する期待が近年大きくなってきている. LESを設計開発に展開するためには,航空宇宙分野で扱う必要がある10の7乗レベルの高レイノルズ数条件における衝撃波や壁面熱流束を伴う圧縮性乱流境界層剥離流れを予測可能とするLES技術(壁面モデルLES)の確立が不可欠であり,当該研究分野に貢献することを目指して研究を推進した.また本研究成果は,航空宇宙分野に限らず,衝撃波や壁面熱流束を伴う幅広い工学分野の高レイノルズ数流れを伴う流体解析に対する波及効果も期待できると考えている.

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Annual Research Report
  • 2021 Annual Research Report
  • Research Products

    (33 results)

All 2024 2023 2022 2021 Other

All Int'l Joint Research (1 results) Journal Article (6 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 6 results,  Open Access: 1 results) Presentation (26 results) (of which Int'l Joint Research: 9 results)

  • [Int'l Joint Research] University of California, Los Angeles/North Carolina State University(米国)

    • Related Report
      2022 Annual Research Report
  • [Journal Article] Theoretical link in numerical shock thickness and shock-capturing dissipation2024

    • Author(s)
      Ryosuke Ida, Yoshiharu Tamaki, Soshi Kawai
    • Journal Title

      Journal of Computational Physics

      Volume: 505 Pages: 112901-112901

    • DOI

      10.1016/j.jcp.2024.112901

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Temporal discretization for improving kinetic-energy and entropy preservation properties in KEEP schemes2024

    • Author(s)
      Hiroyuki Asada, Kanako Maruyama, Soshi Kawai
    • Journal Title

      Computers & Fluids

      Volume: 270 Pages: 106143-106143

    • DOI

      10.1016/j.compfluid.2023.106143

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Ordinary-differential-equation-based nonequilibrium wall modeling for large-eddy simulation2023

    • Author(s)
      Ryo Kamogawa, Yoshiharu Tamaki, Soshi Kawai
    • Journal Title

      Physical Review Fluids

      Volume: 8 Issue: 6 Pages: 064605-064605

    • DOI

      10.1103/physrevfluids.8.064605

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Wall pressure fluctuations in wall heated and cooled shock wave and turbulent boundary layer interactions2023

    • Author(s)
      Ryo Hirai and Soshi Kawai
    • Journal Title

      International Journal of Heat and Fluid Flow

      Volume: 103 Pages: 109205-109205

    • DOI

      10.1016/j.ijheatfluidflow.2023.109205

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Identifying the Self-Sustaining Mechanisms of Transonic Airfoil Buffet with Resolvent Analysis2023

    • Author(s)
      Iwatani Yuta、Asada Hiroyuki、Yeh Chi-An、Taira Kunihiko、Kawai Soshi
    • Journal Title

      AIAA Journal

      Volume: Article in Advance Issue: 6 Pages: 1-12

    • DOI

      10.2514/1.j062294

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Modified wavenumber and aliasing errors of split convective forms for compressible flows2022

    • Author(s)
      Kuya Yuichi、Kawai Soshi
    • Journal Title

      Journal of Computational Physics

      Volume: 464 Pages: 111336-111336

    • DOI

      10.1016/j.jcp.2022.111336

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Presentation] Wall-modeled LES of pitching airfoil at high Reynolds number transonic flows2024

    • Author(s)
      Hiromichi Sashida, Takumi Aoyama, Shigetaka Kawai, Soshi Kawai
    • Organizer
      AIAA SciTech Forum 2024
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Kinetic-energy and entropy preserving (KEEP) scheme for compressible flows on moving grids2023

    • Author(s)
      Hiromichi Sashida, Yuichi Kuya, Soshi Kawai
    • Organizer
      AIAA Aviation Forum 2023
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 壁面モデルLESにおける遷音速強制振動翼の非定常空力現象解析2023

    • Author(s)
      指田裕理, 青山拓海, 河合宗司
    • 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] Wall-modeled LES of shock oscillations in adiabatic and wall-cooled over-expanded nozzles2023

    • Author(s)
      Ryo Hirai, Soshi Kawai
    • Organizer
      14th International ERCOFTAC Symposium on Engineering Turbulence Modelling and Measurements
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Physics-compatible KEEP scheme and high-fidelity scale-resolving simulation of compressible flows2023

    • Author(s)
      Soshi Kawai, Yuichi Kuya, Hiroyuki Asada, Hiromichi Sashida
    • Organizer
      14th International ERCOFTAC Symposium on Engineering Turbulence Modelling and Measurements
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Wall-modeled LES of transonic flow at high Reynolds number around a pitching airfoil2023

    • Author(s)
      Hiromichi Sashida, Takumi Aoyama, Shigetaka Kawai, Soshi Kawai
    • Organizer
      Twentieth International Conference on Flow Dynamics (ICFD2023)
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 非構造格子におけるローパスフィルターの理論解析とKEEPスキームへの適用2023

    • Author(s)
      淺田啓幸, 丸山佳那子, 河合宗司
    • Organizer
      第37回数値流体力学シンポジウム
    • Related Report
      2023 Annual Research Report
  • [Presentation] Resolvent analysis of self-sustained shock oscillations in transonic airfoil buffet2022

    • Author(s)
      Yuta Iwatani, Hiroyuki Asada, Chi-An Yeh, Kunihiko Taira, and Soshi Kawai
    • Organizer
      75th APS Annual Meeting of the Division of Fluid Dynamics (APS-DFD)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Wall-heated/cooled effects on low-frequency pressure fluctuations in shock-wave and turbulent boundary layer interactions2022

    • Author(s)
      Ryo Hirai and Soshi Kawai
    • Organizer
      12th International Symposium on Turbulence and Shear Flow Phenomena (TSFP12)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 衝撃波-乱流境界層干渉剥離流れのLESにおける非平衡壁面モデルの検証2022

    • Author(s)
      那須川勝一, 玉置義治, 河合宗司
    • Organizer
      2022年度衝撃波シンポジウム
    • Related Report
      2022 Annual Research Report
  • [Presentation] 壁面モデルLESによる衝撃波/熱乱流境界層干渉の低周波壁面圧力振動予測2022

    • Author(s)
      平井遼, 河合宗司
    • Organizer
      第36回数値流体力学シンポジウム
    • Related Report
      2022 Annual Research Report
  • [Presentation] 壁面モデルLESによる高レイノルズ数・遷音速強制振動翼予測2022

    • Author(s)
      青山拓海, 指田裕理, 河合宗司
    • Organizer
      第36回数値流体力学シンポジウム
    • Related Report
      2022 Annual Research Report
  • [Presentation] 移動変形格子における運動エネルギー・エントロピー保存(KEEP)スキームの提案2022

    • Author(s)
      指田裕理, 久谷雄一, 河合宗司
    • Organizer
      第36回数値流体力学シンポジウム
    • Related Report
      2022 Annual Research Report
  • [Presentation] 高レイノルズ数・遷音速強制振動翼の壁面モデルLES解析2022

    • Author(s)
      青山拓海, 河合宗司
    • 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] 陽的人工粘性による衝撃波厚み制御のための理論的検討2022

    • Author(s)
      井田 良輔, 玉置 義治, 河合 宗司
    • 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] 衝撃波/乱流境界層干渉現象の壁面圧力振動における壁面熱流束の影響2022

    • Author(s)
      平井遼, 河合宗司
    • 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] DNS analysis of wall heat flux effects on shock wave and turbulent boundary layer interactions2022

    • Author(s)
      Ryo Hirai and Soshi Kawai
    • Organizer
      AIAA SCITECH 2022 Forum
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] POD, DMD, and resolvent analysis of transonic airfoil buffet2022

    • Author(s)
      Yuta Iwatani, Hiroyuki Asada and S. Kawai
    • Organizer
      AIAA SCITECH 2022 Forum
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 壁面熱流束を伴う衝撃波/乱流境界層干渉現象のDNS解析2021

    • Author(s)
      平井 遼, 河合 宗司
    • Organizer
      第53回流体力学講演会/第39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
      2021 Annual Research Report
  • [Presentation] 運動エネルギー・エントロピー完全保存形スキームの実現に向けて2021

    • Author(s)
      丸山 佳那子, 淺田 啓幸, 河合宗司
    • Organizer
      第53回流体力学講演会/第39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
      2021 Annual Research Report
  • [Presentation] 遷音速バフェット現象のresolvent解析2021

    • Author(s)
      岩谷 優汰, 淺田 啓幸, 河合 宗司
    • Organizer
      第53回流体力学講演会/第39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
      2021 Annual Research Report
  • [Presentation] 遷音速バフェット現象のDMD・resolvent解析2021

    • Author(s)
      岩谷優汰, 淺田啓幸, 河合宗司
    • Organizer
      第35回数値流体力学シンポジウム
    • Related Report
      2021 Annual Research Report
  • [Presentation] LESからDNS相当の全領域流れ場を超解像可能とする教師なし学習モデルの構築2021

    • Author(s)
      前島颯樹, 谷野一樹, 河合宗司
    • Organizer
      第35回数値流体力学シンポジウム
    • Related Report
      2021 Annual Research Report
  • [Presentation] CycleGANによる超解像を応用した粗格子LES手法の構築に向けて2021

    • Author(s)
      谷野一樹, 前島颯樹, 河合宗司
    • Organizer
      第35回数値流体力学シンポジウム
    • Related Report
      2021 Annual Research Report
  • [Presentation] 運動エネルギー・エントロピー時間空間完全保存形スキームの提案2021

    • Author(s)
      丸山佳那子, 淺田啓幸, 河合宗司
    • Organizer
      第35回数値流体力学シンポジウム
    • Related Report
      2021 Annual Research Report
  • [Presentation] 擬混合型対流項の解像度とエイリアシングエラー特性: 差分法でも擬混合型対流項によりエイリアシングエラーは減るのか?2021

    • Author(s)
      久谷雄一, 河合宗司
    • Organizer
      第35回数値流体力学シンポジウム
    • Related Report
      2021 Annual Research Report

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Published: 2021-04-28   Modified: 2025-01-30  

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