Simulating an exterior domain for drag force computations in the lattice Boltzmann method

Jonas Latt, Yannick Grillet, Bastien Chopard and Peter Wittwer

Mathematics and Computers in Simulation (MATCOM), 2006, vol. 72, issue 2, 169-172

Abstract: The simulation of a stationary fluid flow past an obstacle by means of a lattice Boltzmann method is discussed. The problem of finding appropriate boundary conditions on the boundaries of the truncated numerical domain is addressed by a method recently discussed in the literature, based on a truncated expansion of the solution. The iterative process at the heart of this method is coupled with the iteration steps of a progressive grid refinement technique that allows a rapid convergence towards a well resolved stationary state. It is shown that this combination results in a highly efficient numerical tool which can speed up the resolution process in a substantial manner.

Keywords: Drag force computation; Artificial boundary condition; Lattice Boltzmann method; Nested grid technique (search for similar items in EconPapers)
Date: 2006
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Persistent link: https://EconPapers.repec.org/RePEc:eee:matcom:v:72:y:2006:i:2:p:169-172

DOI: 10.1016/j.matcom.2006.05.026

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