Numerical Simulation of Two-Fluid Flow through Particulate Media Using the Lattice Boltzmann Method

In this paper, The Lattice Boltzmann Method is employed for analyzing the two-fluid flow in porous media. The developed code proved to be a robust numerical tool for analyzing the factors that influence the relative permeabilities of two immiscible fluids flowing through porous media. The numerically derived relative permeability curves demonstrate that in a strongly wet medium, while the effects of the viscosity ratio of the two fluids (wetting and nonwetting fluids) on the relative permeability of wetting fluid is negligible, it has a remarkable effect on the relative permeability of non-wetting fluid. The numerical study also reveals that the pore shape geometry has virtually no effect on the relative permeability of wetting fluid. But increasing the specific surface area of the porous medium may reduce the relative permeability of non-wetting fluid to a high extent.

کلیدواژه ها:

Relative permeability ، Lattice Boltzmann Method ، wettability ، grain sizedistribution