Lattice Boltzmann Simulation of Non-Ideal Fluids

Details Lattice Boltzmann Simulation of Non-Ideal Fluids Lattice Boltzmann Simulation of Non-Ideal Fluids

1995-02-16

arxiv.org/abs/comp-gas/9502002v1

Physics

Condensed Matter

11 pages, revtex, 4 Postscript figures, uuencoded

Scientific paper

10.1103/PhysRevLett.75.830

A lattice Boltzmann scheme able to model the hydrodynamics of phase separation and two-phase flow is described. Thermodynamic consistency is ensured by introducing a non-ideal pressure tensor directly into the collision operator. We also show how an external chemical potential can be used to supplement standard boundary conditions in order to investigate the effect of wetting on phase separation and fluid flow in confined geometries. The approach has the additional advantage of reducing many of the unphysical discretisation problems common to previous lattice Boltzmann methods.

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