Dresden 2009 – scientific programme

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MM: Fachverband Metall- und Materialphysik

MM 27: Interfaces I

MM 27.3: Talk

Wednesday, March 25, 2009, 12:00–12:15, IFW B

Simulations of surface energy driven processes at structured substrates — •Marcus Jainta and Britta Nestler — Institute of Computational Engineering, Karlsruhe University of Applied Sciences

We introduce a new method based on a phase-field model to simulate the behaviour of multiple phase regions at given non-moving obstacles with sharp interfaces in terms of new boundary conditions. We discuss the results for different surface energies of the simulated microstructures and bubbles. In addition, we consider adhesion forces in the presence and absence of fluid flow. The simulation results of liquid droplets on structured surfaces are compared with experiments related to the Lotus effect. Finally we discuss the numerical method and implementation of the new boundary conditions.