Contact line dynamics in binary lattice Boltzmann simulations
Computational Physics
2008-12-09 v1 Fluid Dynamics
Abstract
We show that, when a single relaxation time lattice Boltzmann algorithm is used to solve the hydrodynamic equations of a binary fluid for which the two components have different viscosities, strong spurious velocities in the steady state lead to incorrect results for the equilibrium contact angle. We identify the origins of these spurious currents, and demonstrate how the results can be greatly improved by using a lattice Boltzmann method based on a multiple-relaxation-time algorithm. By considering capillary filling we describe the dependence of the advancing contact angle on the interface velocity.
Keywords
Cite
@article{arxiv.0812.1282,
title = {Contact line dynamics in binary lattice Boltzmann simulations},
author = {C. M. Pooley and H. Kusumaatmaja and J. M. Yeomans},
journal= {arXiv preprint arXiv:0812.1282},
year = {2008}
}
Comments
10 pages, 5 figures