Wetting condition in diffuse interface simulations of contact line motion

Hang Ding and Peter D. M. Spelt
Phys. Rev. E 75, 046708 – Published 27 April 2007

Abstract

We investigate the wetting condition for diffuse-interface methods in the simulation of two-fluid flows with moving contact lines. A current method, which uses a surface-energy approach, is shown not to result in a slope of the interface that is consistent with the prescribed value of the contact angle. A geometric formulation is proposed that does result in the prescribed contact angle. Test results are presented for the axisymmetric droplet spreading due to the capillary force and the motion of a droplet on a solid substrate in a shear flow.

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  • Received 8 January 2007

DOI:https://doi.org/10.1103/PhysRevE.75.046708

©2007 American Physical Society

Authors & Affiliations

Hang Ding and Peter D. M. Spelt

  • Department of Chemical Engineering, Imperial College London, SW7 2AZ, United Kingdom

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Issue

Vol. 75, Iss. 4 — April 2007

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