Time: 4:00 p.m.
Place: DPG Spring Meeting 2012, Berlin, Germany
Claas Hüter, Max-Planck-Institut für Eisenforschung, Düsseldorf, Germany
Phase field simulation and similar computational problems require a substantial amount of time and. With the use of easy to implement CUDA programming, one can use consumer grade GPUs to greatly accelerate the computations.
Using this kind of massively parallel computation, speedups of up to 100x were achieved. We study the motion of a planar thermal wave, which is simultaneously a phase boundary in a thin film, driven by the application of an electrical current and Joule heating. Based on theoretical modeling by Brener and Temkin (1996) we employ a phase field model that reproduces the analytical predictions for planar front propagation and interface stability. Three-dimensional simulations of the growth of a filament advancing from one electrode to the other demonstrate the applicability of the model towards more complex geometries and problems originating from the microstructure formation in phase change materials.