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Development of a multiphysics fluid simulation method: A wavelet viewpoint

Research Project

Project/Area Number 17K05139
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Computational science
Research InstitutionAichi Institute of Technology (2019-2020)
Nagoya University (2017-2018)

Principal Investigator

Okamoto Naoya  愛知工業大学, 工学部, 准教授 (80547414)

Co-Investigator(Kenkyū-buntansha) 芳松 克則  名古屋大学, 未来材料・システム研究所, 准教授 (70377802)
Project Period (FY) 2017-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2019: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2018: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2017: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywordsウェーブレット / シミュレーション / 乱流 / VP法 / 数値計算 / 時間発展スキーム / 疑似圧縮手法 / Volume Penalization / 非圧縮 / 差分法 / 擬似圧縮 / 非圧縮流れ / マルチフィジックス
Outline of Final Research Achievements

We developed a numerical method to simulate turbulent flow by applying a wavelet-based denoising to incompressible Euler-equations. It is shown that the computed flow exhibits an intermittent nonlinear dynamics and a -5/3 energy spectrum, characteristic of three-dimensional fully developed turbulence. We have also developed a volume penalization method for inhomogeneous Neumann boundary conditions, which allows us to model scalar flux through walls in geometries of complex shape using simple, e.g. Cartesian, domains for solving governing equations. Further details are shown in the references listed in the report.

Academic Significance and Societal Importance of the Research Achievements

近年、気象災害や地球温暖化などの環境問題や、省エネルギー社会に向けた、工学的課題の解決が求められている。流体現象の予測や解明には、近年めざましい発展を遂げている計算機を利用した計算科学的手法、特に基礎方程式をモデル化せずに厳密に解く第一原理的な、直接数値計算(DNS)が強力な手段となってきている。しかしながら、応用問題を解く際は系の自由度が莫大なため、現在あるいは予見しうるスーパーコンピュータの性能をもってしてもDNSを実行できない場合も多い。本研究の目的は、信頼性を失うことなく計算コストを減らすための計算手法の開発であり、ウェーブレット等の先進的な数学的手法の学術的応用の成果が得られている。

Report

(5 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (19 results)

All 2020 2019 2018 2017 Other

All Int'l Joint Research (4 results) Journal Article (2 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 2 results) Presentation (12 results) (of which Int'l Joint Research: 9 results) Remarks (1 results)

  • [Int'l Joint Research] Aix-Marseille University(フランス)

    • Related Report
      2019 Research-status Report
  • [Int'l Joint Research] Ecole Normale Superieure, Paris/Aix-Marseille Universite(フランス)

    • Related Report
      2018 Research-status Report
  • [Int'l Joint Research] Ecole Normale Superieure, Paris(フランス)

    • Related Report
      2017 Research-status Report
  • [Int'l Joint Research] Aix-Marseille Universite, Marseille(フランス)

    • Related Report
      2017 Research-status Report
  • [Journal Article] Volume penalization for inhomogeneous Neumann boundary conditions modeling scalar flux in complicated geometry2019

    • Author(s)
      Teluo Sakurai, Katsunori Yoshimatsu, Naoya Okamoto, Kai Schneider
    • Journal Title

      Journal of Computational Physics

      Volume: 390 Pages: 452-469

    • DOI

      10.1016/j.jcp.2019.04.008

    • NAID

      120006623777

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Wavelet-based regularization of the Galerkin truncated three-dimensional incompressible Euler flows2017

    • Author(s)
      Farge Marie, Okamoto Naoya, Schneider Kai, Yoshimatsu Katsunori
    • Journal Title

      Physical Review E

      Volume: 96 Issue: 6

    • DOI

      10.1103/physreve.96.063119

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] 3次元非圧縮乱流のエクサスケール並列計算に向けて2020

    • Author(s)
      岡本直也
    • Organizer
      第7回「京」を中核とするHPCIシステム利用研究課題 成果報告会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Effect of high-order finite difference discretization of the nonlinear term on turbulence statistics2019

    • Author(s)
      N. Okamoto, T. Matsuzaki, M. Yokokawa, Y. Kaneda
    • Organizer
      17th European Turbulence Conference
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Effect of high-order finite difference discretization on the statistics of 3D incompressible homogeneous turbulence2019

    • Author(s)
      N. Okamoto
    • Organizer
      4th International Workshop on Marine-Earth Science Simulations: Data assimilation and multiscale techniques for numerical simulation of turbulent flows
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Wavelet regularization of the three-dimensional incompressible Euler equations2018

    • Author(s)
      N. Okamoto, M. Farge, K. Schneider, K. Yoshimatsu
    • Organizer
      12th European Fluid Mechanics Conference
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] 乱流DNSにおける種々の時間積分スキームの評価2018

    • Author(s)
      松崎 継生, 岡本 直也, 横川 三津夫, 金田 行雄
    • Organizer
      第166回 ハイパフォーマンスコンピューティング研究会
    • Related Report
      2018 Research-status Report
  • [Presentation] Multiphysics simulation of GaN MOVPE: Flow influence on GaN growth orientation2018

    • Author(s)
      S. Komura, K. Kawakami, A. Kusaba, K. Yoshimatsu, N. Okamoto, Y. Kangawa, K. Kakimoto, and K. Shiraishi
    • Organizer
      International workshop on Nitride Semiconductors
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Flow Influence on Gan MOVPE Growth Orientation2018

    • Author(s)
      S. Komura, K.Kawakami, Y. Yamamoto, A. Kusaba, K. Yoshimatsu, N. Okamoto, Y. Kangawa, K. Kakimoto, K. Shiraishi
    • Organizer
      International Workshop on Modeling in Crystal Growth
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Methodology for Multiphysics Flow Simulation in GaN MOVPE Using Thermodynamic Analysis and First Principles Calculations for GaN Deposition2018

    • Author(s)
      K. Kawakami, S. Komura, Y. Yamamoto, A. Kusaba, K. Yoshimatsu, N. Okamoto, Y. Kangawa, K. Kakimoto, K. Shiraishi
    • Organizer
      International Workshop on Modeling in Crystal Growth
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Wavelet-based regularization of the Galerkin truncated three-dimensional incompressible Euler equations2017

    • Author(s)
      M. Farge, N. Okamoto, K. Schneider, K. Yoshimatsu
    • Organizer
      70th Annual Meeting of the APS Division of Fluid Dynamics
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] 三次元非圧縮オイラー方程式のウェーブレットレギュラリゼーション2017

    • Author(s)
      岡本直也, Marie Farge, Kai Schneider, 芳松克則
    • Organizer
      日本流体力学会年会2017
    • Related Report
      2017 Research-status Report
  • [Presentation] Wavelet Regularization of 3D Incompressible Euler Flows2017

    • Author(s)
      Kai Schneider, Marie Farge, Naoya Okamoto, Katsunori Yoshimatsu
    • Organizer
      the 16th European Turbulence Conference
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Wavelet Regularization of Three-dimensional Incompressible Euler Flows2017

    • Author(s)
      Naoya Okamoto, Marie Farge, Kai Schneider, Katsunori Yoshimatsu
    • Organizer
      Turbulence Colloquium at Mauna Kea: Recent Advances in Turbulence Research
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Remarks] 名古屋大学教員データベースシステム

    • URL

      http://profs.provost.nagoya-u.ac.jp/view/html/100002236_ja.html

    • Related Report
      2017 Research-status Report

URL: 

Published: 2017-04-28   Modified: 2022-01-27  

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