Multiscale Modeling of Fluid Transport in Heterogeneous Materials Using Discrete Boltzmann Methods.
Multiscale Modeling of Fluid Transport in Heterogeneous
Materials Using Discrete Boltzmann Methods.
Martys, N. S.; Hagedorn, J. G.
Materials and Structures, Vol. 35, 650-659, December
Brinkman equation; Darcy's Law; Lattice Boltzmann;
permeability; porous media; parallel computing
The lattice Boltzmann method is a promising approach for
modeling single and multicomponent fluid flow in complex
geometries like porous materials. Here, we review some
of our previous work and discuss some recent
developments concerning fluid flow in multiple pore size
materials. After presenting some simple test cases to
validate the model, results from large scale simulations
of single and multi-component fluid flow through
digitized Fountaine sandstone, generated by x-ray
microtomography will be given. Reasonably good agreement
was found when compared to experimentally determined
values of permeability for similar rocks. Finally,
modification of the lattice Boltzmann equations, to
describe flow in microporous materials is described. The
potential for modeling flows in other microstructures of
interest to concrete technology will be discussed.