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  • Summary & Details

Critical Reynolds Number for Onset of Oscillatory Flow around Ahmed Body of Slant Angle 31 Degree

傾斜角31度のAhmed bodyにおける振動流への遷移臨界レイノルズ数

Detailed Information

Author(J)1) 渥美 佑典, 2) 白鳥 英, 3) 郡 逸平, 4) 永野 秀明, 5) 島野 健仁郎
Author(E)1) Yusuke Atsumi, 2) Suguru Shiratori, 3) Itsuhei Kohri, 4) Hideaki Nagano, 5) Kenjiro Shimano
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, 4) 東京都市大学, 5) 東京都市大学
Affiliation(E)1) Tokyo City University, 2) Tokyo City University, 3) Tokyo City University, 4) Tokyo City University, 5) Tokyo City University
Abstract(J)Ahmed bodyと呼ばれる自動車模型周りの低Re流れについて,定常流から振動流への遷移条件を明らかにすることを目的とした3次元非定常の数値シミュレーションを行った.傾斜角29度の場合については既報で報告済みであり,本研究では傾斜角31度の場合について臨界Reを算出し,29度と比較した結果を報告する.

Translation

Abstract(E)A three-dimensional unsteady numerical simulation of the low Reynolds number flow around the Ahmed body, which is one of the automobile models, was performed to clarify the transition conditions from steady to oscillatory flows. This study reports the critical Reynolds number for the case of the slant angle of 31 degrees with comparison to the case of 29 degrees, which has already been reported by the authors’ group.

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