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Indexed by:期刊论文

Date of Publication:2009-02-01

Journal:ADVANCES IN WATER RESOURCES

Included Journals:SCIE

Volume:32

Issue:2

Page Number:268-279

ISSN No.:0309-1708

Key Words:Multiscale finite element method; Heterogeneous saturated porous media; Consolidation; Ground subsidence; Groundwater

Abstract:The multiscale finite element method is developed for solving the coupling problems of consolidation of heterogeneous saturated porous media under external loading conditions. Two sets of multiscale base functions are constructed, respectively, for the pressure field of fluid flow and the displacement field of solid skeleton. The coupling problems are then solved with a multiscale numerical procedure in space and time domain. The heterogeneities induced by permeabilities and mechanical parameters of the saturated porous media are both taken into account. Numerical experiments are carried out for different cases in comparison with the standard finite element method. The numerical results show that the coupling multiscale finite element method can be successfully used for solving the complicated coupling problems. It reduces greatly the computing effort in both memory and time for transient problems. (C) 2008 Elsevier Ltd. All rights reserved.