円柱近傍後流に及ぼすはく離域への接線方向吹き出しの影響

概要

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Measurements were made in order to investigate the effect of tangential blowing on the near wake of a circular cylinder. It was found that the state of the flow field in the near wake was divided into two, one of which occured when the blowing jet intensity was weak, and the other when it was strong. In the case of the weak blowing intensity, the formation region and the strength of the karman vortex became longer and weaker, respectively, when compared to the nonblowing state. On the other hand, when the blowing jet intensity was strong, they became shorter and stronger, respectively. The thickness of the separated shear layer, as well as the width of the fluctuation of both the separation point from the cylinder and the position of the separated shear layer, also varied according to the blowing intensity.
一般社団法人日本機械学会の論文
1990-01-25