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Lattice Boltzmann simulations of contact line motion. I. Liquid-gas systems

A. J. Briant1, A. J. Wagner2, and J. M. Yeomans1

  • 1Department of Physics, Theoretical Physics, University of Oxford, 1 Keble Road, Oxford OX1 3NP, United Kingdom
  • 2Department of Physics, North Dakota State University, Fargo, North Dakota 58105, USA

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Phys. Rev. E 69, 031602 – Published 22 March, 2004

DOI: https://doi.org/10.1103/PhysRevE.69.031602

Abstract

We investigate the applicability of a mesoscale modeling approach, lattice Boltzmann simulations, to the problem of contact line motion in one and two component, two phase fluids. In this, the first of two papers, we consider liquid-gas systems. Careful implementation of the thermodynamic boundary condition allows us to fix the static contact angle in the simulations. We then consider the behavior of a sheared interface. We show that the contact line singularity is overcome by evaporation or condensation near the contact line which is driven by the curvature of the diffuse interface. An analytic approximation is derived for the angular position of a sheared interface.

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Phys. Rev. E 69, 031602– Published 22 March, 2004
  • Received 26 July 2003

© 2004 American Physical Society

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