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  • Summary & Details

Effect of Slant Angle and Reynolds Number on Regimes of Flow Around Ahmed Body Difference with Turbulence Models

Ahmed Body周りの流れにおける流れ形態の傾斜角とレイノルズ数依存性 乱流モデルによる違い

Detailed Information

Author(J)1) 福岡 駿太, 2) 郡 逸平, 3) 白鳥 英
Author(E)1) Shunta Fukuoka, 2) Itsuhei Kohri, 3) Suguru Shiratori
Affiliation(J)1) 東京都市大学大学院, 2) 東京都市大学, 3) 東京都市大学
Affiliation(E)1) Tokyo City University, 2) Tokyo City University, 3) Tokyo City University
Abstract(J)Ahmed bodyの周りの流れは車体後部の傾斜面角によって流れ形態が変わり,これに伴ってCD値も大きく変化することが知られている.本研究ではこの遷移が出現するレイノルズ数と傾斜角範囲を俯瞰することを目的にRANSモデルを用いた数値計算を行ったところ,用いる乱流モデルによって遷移の出現範囲が異なる結果を得たので報告する.

Translation

Abstract(E)Regimes and drag coefficient (CD) of flow around the Ahmed body may drastically change depending on the slant angle. To clarify the range where these steep CD changes take place, a series of CFD simulations is carried out using RANS turbulence models. The range of Reynolds number and slant angle for flow regime change is found to be different depending on the turbulence model used.

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