Transient Boundary Layers Between Porous Plates

[+] Author and Article Information
W. A. Fiveland

Babcock & Wilcox, Alliance, Ohio

P.-C. Lu

Department of Mechanical Engineering, University of Nebraska-Lincoln, Lincoln, Nebr.

J. Appl. Mech 43(4), 555-558 (Dec 01, 1976) (4 pages) doi:10.1115/1.3423929 History: Received March 01, 1976; Revised June 01, 1976; Online July 12, 2010


Analysis is made of a transient, fully developed, laminar flow of an incompressible fluid in a porous, parallel-plate channel. The crossflow through the plates is uniform, but is allowed to vary with time. In addition to a pressure gradient due to pumping, the flow is also under the inducement of the motion of one of the plates. Numerical results are obtained through the (final or nonfinal) use of the finite Fourier sine transform. Asymptotic flow patterns showing transient boundary layers are investigated. Finally, the formation of the flow from the start is described in physical terms.

Copyright © 1976 by ASME
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