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Study on anisotropic dispersion of particles in turbulence

Research Project

Project/Area Number 18K13692
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 19010:Fluid engineering-related
Research InstitutionCentral Research Institute of Electric Power Industry

Principal Investigator

Fukada Toshiaki  一般財団法人電力中央研究所, エネルギー技術研究所, 主任研究員 (30812127)

Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2020: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2018: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywords粒子拡散 / 乱流 / 固気混相流 / 体積平均 / 非質点粒子 / 流体-粒子相互作用モデル / 分散性混相流
Outline of Final Research Achievements

To clarify the behavior of particle diffusion in turbulent flows, detailed numerical analyses were carried out to evaluate the reproducibility of several diffusion models. Prior to the implementation of the numerical analysis of turbulent flows, an numerical method for reproducing the particle behavior with high accuracy was established and its validity was confirmed. Focusing on the directionality of particle diffusion, the reproducibility of each model was shown to change with particle size. Furthermore, it was clarified that the appropriate particle diffusion model differs between isotropic and anisotropic turbulence.

Academic Significance and Societal Importance of the Research Achievements

本研究の前半で提案した粒子サイズの影響を反映した流体-粒子の相互作用解析手法は、粒子を質点とみなす従来の解析手法よりも現実的であり、大規模かつ高精度な粒子群挙動が再現可能となった。乱流中の粒子拡散挙動に関する結果では、これまで不明であった乱流構造によるモデルの再現性の違いを示した。得られた結果に基づいて条件に応じたモデルの切り替えを提案することで、粒子挙動が重要な工学的応用や自然界の現象に対して高精度な予測を可能にする。

Report

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

    (9 results)

All 2022 2020 2019 2018

All Journal Article (4 results) (of which Peer Reviewed: 4 results,  Open Access: 1 results) Presentation (5 results) (of which Int'l Joint Research: 4 results)

  • [Journal Article] Particle subgrid stress models for large Stokes numbers in particle-laden turbulence2022

    • Author(s)
      Toshiaki Fukada, Shintaro Takeuchi, Kajishima Takeo
    • Journal Title

      Journal of Fluid Mechanics

      Volume: 946

    • DOI

      10.1017/jfm.2022.593

    • Related Report
      Products Report
    • Peer Reviewed / Open Access
  • [Journal Article] Anisotropic Reaction Force Model in Two-way Coupling Simulation for a Smaller Particle Than Grid Spacing Based on Volume Averaging2020

    • Author(s)
      Fukada Toshiaki、Takeuchi Shintaro、Kajishima Takeo
    • Journal Title

      Flow, Turbulence and Combustion

      Volume: 105 Issue: 4 Pages: 1017-1034

    • DOI

      10.1007/s10494-020-00142-0

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Estimation of fluid forces on a spherical particle for two-way coupling simulation based on the volume averaging2019

    • Author(s)
      Fukada Toshiaki、Takeuchi Shintaro、Kajishima Takeo
    • Journal Title

      International Journal of Multiphase Flow

      Volume: 113 Pages: 165-178

    • DOI

      10.1016/j.ijmultiphaseflow.2019.01.009

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] 非一様流れの中で粒子が受ける履歴力の数値解析2018

    • Author(s)
      深田利昭
    • Journal Title

      粉体工学会誌

      Volume: 55 Pages: 433-438

    • NAID

      130007497952

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Presentation] A REACTION FORCE MODEL IN TWO-WAY COUPLING SIMULATION FOR A SMALLER PARTICLE THAN GRID SPACING BASED ON VOLUME AVERAGING2019

    • Author(s)
      Toshiaki Fukada, Shintaro Takeuchi, Takeo Kajishima
    • Organizer
      10th International Conference on Multiphase Flow
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] A NEW IMMERSED STRESS METHOD BASED ON VOLUME AVERAGE2019

    • Author(s)
      Toshiaki Fukada, Shintaro Takeuchi, Takeo Kajishima
    • Organizer
      ASME - JSME - KSME Joint Fluids Engineering Conference 2019
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] 粒子周り流れの擾乱効果を考慮した流体力の評価手法2018

    • Author(s)
      深田利昭, 竹内伸太郎, 梶島岳夫
    • Organizer
      日本流体力学会 年会2018
    • Related Report
      2018 Research-status Report
  • [Presentation] Numerical approach for flow laden with particles of non-negligible size2018

    • Author(s)
      Toshiaki Fukada
    • Organizer
      A Symposium on Patterns and Dynamics in Multiphase and Interface Flows
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Effect of flow disturbance around a particle for fluid force estimation in two-way coupling simulation2018

    • Author(s)
      Toshiaki Fukada, Shintaro Takeuchi and Takeo Kajishima
    • Organizer
      71st Annual Meeting of the American Physical Society Division of Fluid Dynamics
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research

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Published: 2018-04-23   Modified: 2023-03-30  

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