Premium
Effective transfer properties of partially saturated geomaterials with interfaces using the immersed interface method
Author(s) -
Do Duc Phi,
Hoxha Dashnor
Publication year - 2013
Publication title -
international journal for numerical and analytical methods in geomechanics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.419
H-Index - 91
eISSN - 1096-9853
pISSN - 0363-9061
DOI - 10.1002/nag.2187
Subject(s) - materials science , porous medium , volume fraction , porosity , permeability (electromagnetism) , context (archaeology) , thermal conductivity , thermal , work (physics) , composite material , mechanics , interface (matter) , flexibility (engineering) , thermodynamics , mathematics , geology , physics , chemistry , membrane , paleontology , biochemistry , statistics , capillary number , capillary action
SUMMARY The present work aims at introducing an efficient numerical approach based on the immersed interface method to estimate the effective thermal conductivity and permeability of geomaterials as porous media with either perfect or debonded interfaces. The first part deals with the problem of the overall thermal properties of a medium containing perfectly bonded inclusions. The evolution of the homogenized properties with respect to the properties of individual constituents, the volume fraction, the spatial distribution, and the shape of inclusions is highlighted. The second part of the paper is devoted to the case of imperfectly bonded inclusions. An extension of the immersed interface method in this context makes it possible to study other aspects that have an influence on the effective properties such as the interfacial resistance and the size of inclusions. The application of the proposed numerical tool to some porous rocks in partially saturated condition shows good agreement with the available experimental results and demonstrates the performance and the flexibility of the developed procedure.Copyright © 2013 John Wiley & Sons, Ltd.