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International Journal of Fluid Mechanics Research
ESCI SJR: 0.206 SNIP: 0.446 CiteScore™: 0.5

ISSN 印刷: 2152-5102
ISSN オンライン: 2152-5110

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International Journal of Fluid Mechanics Research

DOI: 10.1615/InterJFluidMechRes.v37.i4.30
pages 325-342

On the Unsteady Wake for Flow Past Transversally Vibrating Square Cylinder

Pratish P. Patil
John F. Welch Technology Centre GE India, Bangalore-560066
Shaligram Tiwari
Department of Mechanical Engineering, Indian Institute of Technology Madras Chennai, India, 600036

要約

Numerical investigations are carried out to study the behavior of near wake flow for flow past a transversally vibrating square cylinder using developed computational code. Two-dimensional computational study is conducted over a range of frequencies of cylinder vibration. The nature of vortex shedding is found to be contingent of the frequency of excitation of the cylinder and observed to vary characteristically. The temporal evolution of the unsteady wake is presented. The unsteady forces on the vibrating square cylinder are computed and are compared with those on a stationary square cylinder. Further results include dependence of vorticity fields as well as of wake Strouhal number on frequency of excitation of the vibrating cylinder. In addition, a comparison between drag forces for flow past transversely vibrating square and circular cylinders for similar amplitude and frequency of cylinder vibration has been presented as a validation of the tested computational code.


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