Coupling between fluid fingering and strain localization during the imbibition of a partially saturated soil is investigated in this paper. The fluid mixture saturating the granular skeleton is regarded as a non-uniform fluid characterized via a double well Helmoltz free energy endowed with a gradient regularizing contribution. The porous medium is assumed deformable and the associated elasto-plastic constitutive law is described by the 'Sinfonietta Classica' plastic model. Because of the higher differential order of the hydraulic problem a mixed finite element method is employed.

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Published on 11/07/21
Submitted on 11/07/21

Volume IS10 - Computational Models and Methods for Multiphysics Processes in Multiphase Porous Media, 2021
Licence: CC BY-NC-SA license

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