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On high-frequency oscillatory viscous flows

Published online by Cambridge University Press:  28 March 2006

Chang-Yi Wang
Chang-Yi Wang
Affiliation:
Department of Applied Mathematics, California Institute of Technology
Now at the Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California 91103.
Pasadena, California 91109
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Abstract

The equations governing high-frequency oscillatory viscous flows are investigated through the separation of the steady and the unsteady parts. All Reynolds number ranges are studied and the orders of magnitude of the steady streaming produced by the Reynolds stresses are established.

The oscillating circular cylinder at low Reynolds numbers is studied through the method of inner and outer expansions. Steady recirculating cells exist near the cylinder. The results compare very well with experiments. Analytic expressions for the streamfunction and the drag coefficient are obtained.

The oscillating flow towards an infinite plate is investigated in detail. The steady streaming is caused by the steady component of the Reynolds stress. The pressure gradient always causes reverse flow near the solid boundary.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 32 , Issue 1 , 9 April 1968 , pp. 55 - 68
Copyright
© 1968 Cambridge University Press

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