Regensburg 2010 – scientific programme

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DY: Fachverband Dynamik und Statistische Physik

DY 32: Fluid Dynamics

DY 32.7: Talk

Friday, March 26, 2010, 11:45–12:00, H47

Contact Angle Evaluation in Phase Field Simulations — •Ion Dan Borcia, Rodica Borcia, and Michael Bestehorn — Lehrstuhl für Theoretische Physik II, Brandenburgische Technische Universität Cottbus, Germany

The phase field method is a good tool for investigating fluid systems when complicated interfaces are present. For the point of view of numerical implementation a great advantage of the method is to avoid complicated boundary conditions when the interfaces are allowed to deform. In order to describe the interfaces, gradient terms of the phase field are included in the free energy functional. A study of static and dynamic contact angles is possible by including the solid-liquid interactions into the boundary conditions on the solid substrate. Due to the fact that the phase field model works with diffuse interfaces, determination of static or dynamic contact angles is not obvious. Some solutions for this problem and preliminary results will be presented.