310 非定常低レイノルズ数流れについて(FM-4 流れ解析の基礎について)

概要

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This paper treats a transient low Reynolds number flow around an impulsively started twodimensional circular cylinder with rotation: (1) An impulsively started rotational circular cylinder and (2) an impulsively started and rotated circular cylinder with constant speed and constant angular velocity. The main purpose is to discuss the asymptotic behavior of these two transient flows to steady flows as time to infinity. The matched asymptotic method is used for the analysis and asymptotic solutions for long time motion are obtained. The difference of the asymptotic behavior between two cases results from the far-filed condition and the rate to the steady flow is shown to be of the order of t^<-3/2>.
社団法人日本機械学会の論文
2001-03-16