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

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

doi:10.1063/1.868477

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

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

Mechanical & Aerospace Engineering

Research output: Contribution to journal › Article › Research › peer-review

25 Citations (Scopus)

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 language	English
Pages (from-to)	2288-2290
Number of pages	3
Journal	Physics of Fluids
Volume	7
Issue number	9
DOIs	https://doi.org/10.1063/1.868477
Publication status	Published - 1 Jan 1995

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abstract = "The formation length of K{\'a}rm{\'a}n vortices can be drastically reduced by small-amplitude excitation at a frequency much higher than the natural frequency of K{\'a}rm{\'a}n 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 K{\'a}rm{\'a}n vortices.",

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AU - Rockwell, D.

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AB - 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.

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

Abstract

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