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Elucidation and modeling of interparticle interference effect for high fidelity compressible multiphase flow simulation

Research Project

Project/Area Number 21K14071
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 19010:Fluid engineering-related
Research InstitutionTohoku University

Principal Investigator

Nagata Takayuki  東北大学, 工学研究科, 特任助教 (30898276)

Project Period (FY) 2021-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2022: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2021: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Keywords固気混相流 / 粒子間干渉 / 圧縮性低レイノルズ数流れ / 直接数値解析 / シュリーレン可視化 / 圧縮性混相流 / 直接数値計算 / 流体干渉
Outline of Research at the Start

圧縮性混相流の高忠実度シミュレーションと現象理解に向けて,圧縮性低レイノルズ数流れ における粒子間の流体力学的干渉効果の解明とモデル化に挑む.三次元圧縮性Navier-Stokes方程式の直接数値計算および衝撃波管を用いた平面衝撃波と粒子クラスターの干渉実験により,圧縮性低レイノルズ数流れでの粒子間の流体力学的干渉効果を解明し,粒子間の流体力学的干渉により生じる流体力や応力分布の変化をモデル化する.粒子間干渉の効果を含めた精緻なモデル化により,圧縮性混相流の高忠実度シミュレーションとそれを用いた現象理解や流体機械の性能向上に向けた基盤を構築する.

Outline of Final Research Achievements

The effects of aerodynamic interference between particles in compressible low-Reynolds-number flows were investigated numerically and experimentally. Numerical simulations were performed to analyze the flow around two fixed particles in a uniform flow, and the Mach number effect on the flow field and the effect of interference on the aerodynamic forces were clarified. The interaction process with the shock wave was also analyzed considering the motion of the particles, and the effects of particle density and positional relationship on the motion of each particle after interaction with the shock wave are clarified. In addition, the existing particle drag model for a single particle was improved based on the results of numerical simulations. In experiments, aerodynamic interference between multiple objects was investigated in a shock wave tube and a low-density wind tunnel under compressible low Reynolds number conditions for various objects such as spheres, prisms, and cylinders.

Academic Significance and Societal Importance of the Research Achievements

粒子を含む流れは,大気や生体,内燃機関など様々な場所で現れる.そのような流れでは,粒子の影響で乱流の大規模構造など流れ場全体の構造が変化する.ガスタービンエンジン内の噴霧燃焼など,流れが高速流の場合は圧縮性混相流となり,現象はより複雑化するが,数値計算による実現象の再現には,粒子の影響を忠実に反映した混相流計算が必要である.しかし,微粒子周り流れが圧縮性低Reynolds数条件のため,実験計測の困難さから粒子周り流れの基礎特性が明らかでない.本研究により圧縮性混相流における粒子間の流体力学的干渉の効果が明らかとなり,圧縮性混相流の高精度モデリングに向けた基礎的知見を得ることができた.

Report

(3 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • Research Products

    (13 results)

All 2022 2021

All Journal Article (3 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 3 results) Presentation (10 results) (of which Int'l Joint Research: 3 results)

  • [Journal Article] Effect of particle arrangement and density on aerodynamic interference between twin particles interacting with a plane shock wave2022

    • Author(s)
      Takahashi, S., Nagata, T., Mizuno, Y., and Nonomura, T.
    • Journal Title

      Physics of Fluids

      Volume: 34 Issue: 11 Pages: 113301-113301

    • DOI

      10.1063/5.0101365

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Schlieren visualization and motion analysis of an isolated and clustered particles after interacting with planar shock2022

    • Author(s)
      Nagata, T., Nonomura, T., Ohtani, K. and Asai, K.
    • Journal Title

      Transactions of the Japan Society for Aeronautical and Space Sciences

      Volume: -

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Supersonic and hypersonic drag coefficients for a sphere2021

    • Author(s)
      Loth, E., Daspit, J. T., Hanrahan, G., Jeong, M., Nagata, T., and Nonomura, T.
    • Journal Title

      AIAA Journal

      Volume: 59 Pages: 3261-3274

    • DOI

      10.2514/1.j060153

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] Investigation of Mach number and relative position effects on aerodynamic interference between two particles by direct numerical simulation2022

    • Author(s)
      Nagata, T., Takahashi, S., Mizuno, Y., and Nonomura, T.
    • Organizer
      75th Annual Meeting of the Division of Fluid Dynamics
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] レイノルズ数O(10^3)の正方角柱周り流れにおける臨界マッハ数について2022

    • Author(s)
      永田貴之,笠井美玖,草間健介,浅井圭介,野々村拓
    • Organizer
      流体力学会 年会2022
    • Related Report
      2022 Annual Research Report
  • [Presentation] Influence of particle density and Relative position on aerodynamic interference between two moving particles driven by shock-induced flows2022

    • Author(s)
      Takahashi, S., Nagata, T., Mizuno, Y., and Nonomura, T., and Obayashi, S.
    • Organizer
      International Conference on Flow Dynamics 2022
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 実験的研究に基づくレイノルズ数O (10^3)における直列2角柱の臨界間隔に対する圧縮性効果の解明2022

    • Author(s)
      笠井美玖,永田貴之,小澤雄太,浅井圭介,野々村拓
    • Organizer
      日本流体力学会年会2022
    • Related Report
      2022 Annual Research Report
  • [Presentation] 低圧環境下におけるPoly(TMSP)を用いた感圧塗料による直列二角柱上の圧力計測2022

    • Author(s)
      笠井美玖,永田貴之,小澤雄太,浅井圭介,野々村拓
    • Organizer
      第18回 学際領域における分子イメージングフォーラム
    • Related Report
      2022 Annual Research Report
  • [Presentation] Implicit large-eddy simulation of subsonic compressible low Reynolds number flow over a flat plate at Re = 20,0002022

    • Author(s)
      Nagata, T. and Nonomura, T.
    • Organizer
      75th Annual Meeting of the Division of Fluid Dynamics
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 圧縮性低レイノルズ数流れにおける平板上の層流剥離泡および乱流遷移に対するマッハ数効果の数値的研究2022

    • Author(s)
      永田貴之,野々村拓
    • 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] 直接数値シミュレーションによる二粒子間の流体力学的干渉に対するマッハ数効果および粒子の相対位置効果の解析2022

    • Author(s)
      永田貴之,高橋俊,水野裕介,野々村拓
    • Organizer
      2021年度衝撃波シンポジウム
    • Related Report
      2021 Research-status Report
  • [Presentation] 並列に固定された2粒子間の流体力学的干渉に対する圧縮性効果の評価2021

    • Author(s)
      永田貴之,高橋俊,水野裕介,野々村拓
    • Organizer
      第35回数値流体力学シンポジウム
    • Related Report
      2021 Research-status Report
  • [Presentation] 衝撃波負荷により移動する2球体に生じる非定常抵抗低減効果2021

    • Author(s)
      高橋俊,永田貴之,水野裕介,野々村拓,大林茂
    • Organizer
      第35回数値流体力学シンポジウム
    • Related Report
      2021 Research-status Report

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Published: 2021-04-28   Modified: 2024-01-30  

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