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REVIEW ARTICLES

Injection of Fluid Into a Layer of Deformable Porous Medium

[+] Author and Article Information
Steven Barry, Geoffrey Aldis, Geoffry Mercer

Department of Mathematics, University College, University of New South Wales, Australian Defence Force Academy, Canberra ACT 2601, Australia

Appl. Mech. Rev 48(10), 722-726 (Oct 01, 1995) (5 pages) doi:10.1115/1.3005054 History: Online April 29, 2009

Abstract

The flow of fluid from a point source into a layer of deformable porous material is considered. The main applications of this work are to subcutaneous injections and subterranean soil flows. The porous material is assumed to be an isotropic, homogeneous, linearly elastic solid. The governing equations are derived for an axisymmetric geometry using linear poro-elasticity and are applied to the situation of a point source at some height z = z0 with a line sink at a distance r = ρ. These are solved analytically using Hankel transform techniques with the Hankel inversion integrals calculated numerically. Results are given for the pressure contours and the displacement of the solid matrix for a variety of source heights and elastic parameters. These indicate the swelling of the medium and subsequent deformation of the free surface. Results indicate regions where one dimensional models may be applicable.

Copyright © 1995 by The American Society of Mechanical Engineers
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