Kármán vortex formation from a cylinder: Role of phase-locked Kelvin-Helmholtz vortices

C. Chyu, J. C. Lin, J. Sheridan, D. Rockwell

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Abstract

The formation length of Kármán vortices can be drastically reduced by small-amplitude excitation at a frequency much higher than the natural frequency of Kármán 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 Kármán vortices.

Original languageEnglish
Pages (from-to)2288-2290
Number of pages3
JournalPhysics of Fluids
Volume7
Issue number9
DOIs
Publication statusPublished - 1 Jan 1995

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