Reduction of spurious velocity in finite difference lattice Boltzmann models for liquid - vapor systems

Details Reduction of spurious velocity in finite difference lattice Boltzmann models for liquid - vapor systems Reduction of spurious velocity in finite difference lattice Boltzmann models for liquid - vapor systems

2003-05-09

arxiv.org/abs/nlin/0305013v1

Nonlinear Sciences

Cellular Automata and Lattice Gases

22 pages, 10 figures (submitted to International Journal of Modern Physics C- Physics and Computers)

Scientific paper

10.1142/S0129183103005388

The origin of the spurious interface velocity in finite difference lattice Boltzmann models for liquid - vapor systems is related to the first order upwind scheme used to compute the space derivatives in the evolution equations. A correction force term is introduced to eliminate the spurious velocity. The correction term helps to recover sharp interfaces and sets the phase diagram close to the one derived using the Maxwell construction.

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