Premium
Multiphase flow in deforming porous material
Author(s) -
Schrefler B. A.
Publication year - 2004
Publication title -
international journal for numerical methods in engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.421
H-Index - 168
eISSN - 1097-0207
pISSN - 0029-5981
DOI - 10.1002/nme.953
Subject(s) - porous medium , constitutive equation , porosity , thermodynamics , entropy (arrow of time) , mathematics , multiphase flow , mechanics , calculus (dental) , geotechnical engineering , physics , geology , finite element method , medicine , dentistry
A model for mechanical behaviour of saturated–unsaturated porous media is presented within the framework of thermodynamics of irreversible processes. It includes interfaces with thermodynamic properties between the constituents. The necessary balance equations are derived using averaging theories. Restrictions on the form of the constitutive equations are obtained by exploiting the entropy inequality according to the Coleman–Noll procedure. A particular form of the governing equations is then solved numerically. The validation of the model proposed through a comparison between experimental and numerical results and an application example concerning a tunnel fire conclude the paper. Copyright © 2004 John Wiley & Sons, Ltd.