Large Scale Simulations of Single and Multi-Component Flow in Porous Media.
Large Scale Simulations of Single and Multi-Component
Flow in Porous Media.
Martys, N. S.; Hagedorn, J. G.; Goujon, D.; Devaney, J.
Developments in X-Ray Tomography II. Proceedings.
SPIE: The International Society for Optical Engineering.
SPIE Volume 3772. July 22-23, 1999, Denver, CO, 205-213
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porous media; lattice Boltzmann; microtomography;
parallel computing; permeability
We examine the utility of the lattice Boltsmann method
for modeling fluid flow in large microstructures. First,
results of permeability calculations are compared to
predicted values for several idealized geometries. Large
scale simulations of fluid flow through digitized images
of Fontainebleau sandstone, generated by X-ray
microtomography, were then carried out. Reasonably good
agreement was found when compared to experimentally
determined values of permeabiity for similar rocks. We
also calculate relative permeability curves as a
function of fluid saturation and driving force. The
Onsager relation, which equates off-diagonal components
of the permeability tensor for two phase flow, is shown
not to hold for intermediate to low nonwetting
saturation, since the response of the fluid flow to an
applied body force was nonlinear. Values of permeabiity
from three phase flows are compared to corresponding two
phase values. Performance on several computing platforms