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Article
Modeling of dynamic wetting far from equilibrium
| Authors: |
Carlson, A.C., Do-Quang, M., Amberg, G.A. |
| Document Type: |
Article |
| Pubstate: |
Published |
| Journal: |
Physics of Fluids |
| Volume: |
21
121701 |
| Year: |
2009 |
AbstractIn this paper we present simulations of dynamic wetting far from equilibrium based on phase field theory. In direct simulations of recent experiments [J. C. Bird, S. Mandre, and H. A. Stone, Phys. Rev. Lett. 100, 234501 (2008)], we show that in order to correctly capture the dynamics of rapid wetting, it is crucial to account for nonequilibrium at the contact line, where the gas, liquid, and solid meet. A term in the boundary condition at the solid surface that naturally arises in the phase field theory is interpreted as allowing for the establishment of a local structure in the immediate vicinity of the contact line. A direct qualitative and quantitative match with experimental data of spontaneously wetting liquid droplets is shown.
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