KARMAN VORTEX FORMATION FROM A CYLINDER - ROLE OF PHASE-LOCKED KELVIN-HELMHOLTZ VORTICES

被引:23
作者
CHYU, C
LIN, JC
SHERIDAN, J
ROCKWELL, D
机构
[1] Department of Mechanical Engineering and Mechanics, Lehigh University, Bethlehem
[2] Department of Mechanical Engineering, Monash University, Clayton
关键词
D O I
10.1063/1.868477
中图分类号
O3 [力学];
学科分类号
08 ; 0801 ;
摘要
The formation length of Karman vortices can be drastically reduced by small-amplitude excitation at a frequency much higher than the natural frequency of Karman vortex formation, namely the Kelvin-Helmholtz (KH) frequency of the separating shear layer. Phase-locked patterns of KH vortices are attainable. These spatially stationary patterns coexist, however, with the spatial and temporal development of the Karman vortices. (C) 1995 American Institute of Physics.
引用
收藏
页码:2288 / 2290
页数:3
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