Lattice-Boltzmann simulation of the shallow-water equations with fluid-structure interaction on multi- and manycore processors

Authors:
Markus Geveler;Dirk Ribbrock;Dominik Göddeke;Stefan Turek
Affiliations:
Institut für Angewandte Mathematik, TU Dortmund, Germany;Institut für Angewandte Mathematik, TU Dortmund, Germany;Institut für Angewandte Mathematik, TU Dortmund, Germany;Institut für Angewandte Mathematik, TU Dortmund, Germany
Venue:
Facing the multicore-challenge
Year:
2010

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Abstract

We present an efficient method for the simulation of laminar fluid flows with free surfaces including their interaction with moving rigid bodies, based on the two-dimensional shallow water equations and the Lattice-Boltzmann method. Our implementation targets multiple fundamentally different architectures such as commodity multicore CPUs with SSE, GPUs, the Cell BE and clusters. We show that our code scales well on an MPI-based cluster; that an eightfold speedup can be achieved using modern GPUs in contrast to multithreaded CPU code and, finally, that it is possible to solve fluid-structure interaction scenarios with high resolution at interactive rates.