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

✍ Scribed by Bernhard A. Schrefler; Roberto Scotta

• Publisher: Elsevier Science
• Year: 2001
• Tongue: English
• Weight: 983 KB
• Volume: 190
• Category: Article
• ISSN: 0045-7825
• DOI: 10.1016/s0045-7825(00)00390-x

✦ Synopsis

A fully coupled dynamic model is presented for the analysis of water and air ¯ow in deforming porous media, in fully or partially saturated conditions. The solid displacements and the pressures of ¯uids are taken as primary unknowns of the model. The ®nite element method is used for the discrete approximation of the partial dierential 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.