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Slip velocity over a perforated or patchy surface

Published online by Cambridge University Press:  15 January 2010

C. POZRIKIDIS
C. POZRIKIDIS*
Affiliation:
Department of Chemical Engineering, University of Massachusetts, 686 North Pleasant Street, Amherst, MA 01003, USA
*
†Email address for correspondence: [email protected]
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Abstract

Shear flow over a solid surface containing perforations or patches of zero shear stress is discussed with a view to evaluating the slip velocity. In both cases, the functional dependence of the slip velocity on the solid fraction of the surface strongly depends on the surface geometry, and a universal law cannot be established. Numerical results for flow over a plate with circular or square perforations or patches of zero shear stress, and flow over a plate consisting of separated square or circular tiles corroborate the assertion.

Type
Papers
Information
Journal of Fluid Mechanics , Volume 643 , 25 January 2010 , pp. 471 - 477
Copyright
Copyright © Cambridge University Press 2010

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References

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