Domain Growth, Wetting and Scaling in Porous Media

Details Domain Growth, Wetting and Scaling in Porous Media Domain Growth, Wetting and Scaling in Porous Media

1993-04-21

arxiv.org/abs/comp-gas/9304001v1

Nonlinear Sciences

Cellular Automata and Lattice Gases

13 pages, latex, submitted to PRL

Scientific paper

10.1103/PhysRevLett.71.4198

The lattice Boltzmann (LB) method is used to study the kinetics of domain growth of a binary fluid in a number of geometries modeling porous media. Unlike the traditional methods which solve the Cahn-Hilliard equation, the LB method correctly simulates fluid properties, phase segregation, interface dynamics and wetting. Our results, based on lattice sizes of up to $4096\times 4096$, do not show evidence to indicate the breakdown of late stage dynamical scaling, and suggest that confinement of the fluid is the key to the slow kinetics observed. Randomness of the pore structure appears unnecessary.

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