EXPERIMENTAL INVESTIGATION ON ORDERED AND CHAOTIC PHENOMENA OF VORTEX SHEDDING IN THE WAKE FLOW BEHIND A TWO-DIMENSIONAL CIRCULAR CYLINDER

被引：0

作者：

魏中磊

吴忠

H.E.FIEDLER

机构：

[1] Department of Mechnics

[2] Peking University

[3] Beijing

[4] PRC

[5] Hermann-Fottinger Institut

[6] Technische Universitat Berlin

[7] Berlin

来源：

ScienceinChina,SerA. | 1992年 / Ser.A.1992卷 / 01期

关键词：

D O I：

暂无

中图分类号：

学科分类号：

摘要：

<正> In this paper, some preliminary experiments of ordered and chaotic vortex sheddingsbehind a 2--D circular cylinder at Reynolds numbers ranging from Re=50 to 400 are presented.A transition in vortex shedding from the laminar to chaotic state occurs at Re=184.6-193.5,but it is seemingly not through the quasi--periodicity routes. There is a couple of dis-continuities in slope on the curve of the relationship between the vortex shedding frequencyand Reynolds number. The discontinuity at Re = 70 might correspond to the change of themode of the oblique vortex shedding. The second one at Re = 193.5 is responsible for thetransition from the ordered to the chaotic state.

引用

页码：81 / 90

页数：10

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