A BENCHMARK CASE FOR LATTICE BOLTZMANN: TURBULENT DIPOLE-WALL COLLISION

Jonas Latt () and Bastien Chopard
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Jonas Latt: Centre Universitaire Informatique, University of Geneva, Rue du General Dufour 24, 1211 Geneva, Switzerland
Bastien Chopard: Centre Universitaire Informatique, University of Geneva, Rue du General Dufour 24, 1211 Geneva, Switzerland

International Journal of Modern Physics C (IJMPC), 2007, vol. 18, issue 04, 619-626

Abstract: A numerical experiment is presented that is taken from the recent literature. It has been devised as a benchmark case to test the quality of boundary conditions in numerical solvers for computational fluid dynamics. In this experiment, a two-dimensional system of two counter-rotating vortexes is brought into collision with a no-slip wall and rebounds from it. In the present paper, the benchmark is run with a lattice-Boltzmann numerical solver. Astonishingly accurate results are obtained with a straightforward boundary condition known under the name of bounce-back. This sample problem is also used to discuss techniques for the setup of an initial condition in the lattice Boltzmann method.

Keywords: Lattice Boltzmann; cfd; benchmark; turbulence; 47.11.+j; 05.20.Dd (search for similar items in EconPapers)
Date: 2007
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DOI: 10.1142/S0129183107010863

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