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Hydraulic effects of fracture in brittle porous materials
Author(s) -
Nguyen Minh N.,
Timothy Jithender J.,
Beckhuis Sven,
Meschke Günther
Publication year - 2014
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.201410055
Subject(s) - poromechanics , biot number , homogenization (climate) , permeability (electromagnetism) , geothermal gradient , porosity , porous medium , geotechnical engineering , geology , materials science , brittleness , brittle fracture , mechanics , context (archaeology) , hydraulic fracturing , fracture (geology) , composite material , physics , chemistry , geophysics , biodiversity , ecology , paleontology , membrane , biology , biochemistry
This paper presents a multi‐level model for the description of hydraulic effects of fracture within the context of Enhanced Geothermal Systems. The standard Biot's poroelastic formulation is used to model the physical processes in a geomechanical reservoir in terms of the material deformation and the fluid pressure. Crack propagation is modeled using the phase field method. The influence of a propagating fracture on permeability is taken into account by using a micromechanical homogenization technique. (© 2014 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim)