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TECHNICAL BRIEFS

Unsteady Flow in a Porous Medium Between Two Infinite Parallel Plates in Relative Motion

[+] Author and Article Information
V. M. Soundalgekar

Gulf Polytechnic, Bahrain, Middle East

H. S. Takhar

Department of Engineering, Manchester University, Manchester, M13 9PL U.K.

M. Singh

Department of Mathematics, Simon Fraser University, Burnaby, (B.C.) Canada V5A 1S6

J. Fluids Eng 107(4), 534-535 (Dec 01, 1985) (2 pages) doi:10.1115/1.3242526 History: Received August 14, 1984; Online October 26, 2009

Abstract

An approximate solution to the unsteady flow of a viscous incompressible fluid through a porous medium bounded by two infinite parallel plates, the lower one stationary and the upper one oscillating in its own plane, is presented here. Expressions for the transient velocity, the amplitude, the phase angle α and the skin-friction are derived and numerically calculated. It is observed that the amplitude increases with increasing σ, the permeability parameter, and ω, the frequency. Also, there is always a phase lead, and the phase angle α decreases with increasing σ.

Copyright © 1985 by ASME
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