Vortex shedding from a circular cylinder near a moving wall

被引：59

作者：

Huang, Wei-Xi ^{[1
]}

Sung, Hyung Jin ^{[1
]}

机构：

[1] Korea Adv Inst Sci & Technol, Dept Mech Engn, Taejon 305701, South Korea

来源：

JOURNAL OF FLUIDS AND STRUCTURES | 2007年 / 23卷 / 07期

关键词：

circular cylinder; ground effect; vortex shedding; strouhal number;

D O I：

10.1016/j.jfluidstructs.2007.02.004

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Flow over a circular cylinder near a moving plane wall is simulated numerically. The influence of the moving wall on the vortex shedding from the cylinder is demonstrated and the corresponding mechanism is illustrated using instability theory. A critical gap ratio between the circular cylinder and the moving wall is defined, and a precise method for determining the critical gap ratio is proposed. The drag and lift forces and the pressure coefficient are presented as a function of the gap ratio. The scaling of the Strouhal number is discussed. (C) 2007 Elsevier Ltd. All rights reserved.

引用

页码：1064 / 1076

页数：13

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