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Finite element analysis of the motion of a gas-liquid interface in a forous medium

✍ Scribed by R. W. Lewis; V. A. Norris; P. W. France

Publisher
John Wiley and Sons
Year
1975
Tongue
English
Weight
627 KB
Volume
9
Category
Article
ISSN
0029-5981

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✦ Synopsis

Abstract

A numerical method is outlined for determining the movement of a gas‐liquid interface in a porous medium following the withdrawal of gas from an underground reservoir. The governing equations for the flow of both gas and the underlying liquid are formulated in terms of the finite element process using the Galerkin approach. The method consists of an iterative technique in which solution of the basic equations is dependent on the location of the interface. Cubic isoparametric elements are employed to allow accurate modelling of the curved boundary and to provide a relatively large number of interface points for a small number of elements. Extensions of the method are indicated in the text.

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