A fully coupled dynamic model for two-phase fluid flow in deformable porous media

Bernhard A. Schrefler; Roberto Scotta

doi:10.1016/S0045-7825(00)00390-X

A fully coupled dynamic model for two-phase fluid flow in deformable porous media

Bernhard A. Schrefler, Roberto Scotta

Research output: Contribution to journal › Article

123 Scopus citations

Abstract

A fully coupled dynamic model is presented for the analysis of water and air flow in deforming porous media, in fully or partially saturated conditions. The solid displacements and the pressures of fluids are taken as primary unknowns of the model. The finite element method is used for the discrete approximation of the partial differential equations governing the problem. The mathematical framework and the numerical implementation of the model are given in detail and the adopted approximations are put into evidence. First the model is validated with respect to documented experiments on partially saturated soil behaviour in quasi-static condition. Then the results of a full dynamic analysis are shown and discussed. In this paper, merits and drawbacks of the proposed model are highlighted.

Original language	English (US)
Pages (from-to)	3223-3246
Number of pages	24
Journal	Computer Methods in Applied Mechanics and Engineering
Volume	190
Issue number	24-25
DOIs	https://doi.org/10.1016/S0045-7825(00)00390-X
State	Published - Mar 2 2001

Keywords

Deforming porous medium
Dynamic analysis
Finite element method
Two phase flow

ASJC Scopus subject areas

Computer Science Applications
Computational Mechanics

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10.1016/S0045-7825(00)00390-X

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AB - A fully coupled dynamic model is presented for the analysis of water and air flow in deforming porous media, in fully or partially saturated conditions. The solid displacements and the pressures of fluids are taken as primary unknowns of the model. The finite element method is used for the discrete approximation of the partial differential equations governing the problem. The mathematical framework and the numerical implementation of the model are given in detail and the adopted approximations are put into evidence. First the model is validated with respect to documented experiments on partially saturated soil behaviour in quasi-static condition. Then the results of a full dynamic analysis are shown and discussed. In this paper, merits and drawbacks of the proposed model are highlighted.

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KW - Finite element method

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