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Streaming effect of wall oscillation to boundary layer separation (1991)

Wu, J. M. ; Wu, X. H. ; Wu, J. Z.

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Publication Date: 2019-06-28

Description: This paper presents a preliminary theoretical result on the time averaged streaming effect of local forcing excitation to the boundary layer separation from smooth surface. The problem is formulated as a periodic disturbance to a basic steady breakaway separating flow, for which the data are taken from a numerical triple-deck solution. The ratio of Strouhal number St and Reynolds number Re plays an important role, both being assumed sufficiently high. The analytical and numerical results show that this streaming effect is quite strong at proper values of St/Re exp 1/4, which may delay or even suppress the separation.

Keywords: AERODYNAMICS

Type: AIAA PAPER 91-0545

Format: text

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