SIMULATING TIME HARMONIC FLOWS WITH THE REGULARIZED L-BGK METHOD

Lilit Axner (), Jonas Latt, Alfons G. Hoekstra, Bastien Chopard and Peter M. A. Sloot
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Lilit Axner: Section Computational Science, University of Amsterdam, Kruislaan 403, 1098 SJ Amsterdam, The Netherlands
Jonas Latt: Computer Science Department, University of Geneva, CH-1211 Geneva 4, Switzerland
Alfons G. Hoekstra: Section Computational Science, University of Amsterdam, Kruislaan 403, 1098 SJ Amsterdam, The Netherlands
Bastien Chopard: Computer Science Department, University of Geneva, CH-1211 Geneva 4, Switzerland
Peter M. A. Sloot: Section Computational Science, University of Amsterdam, Kruislaan 403, 1098 SJ Amsterdam, The Netherlands

International Journal of Modern Physics C (IJMPC), 2007, vol. 18, issue 04, 661-666

Abstract: A recent improvement of the lattice BGK model, based on a regularization of the precollision distribution function, is applied to three dimensional Womersley flow. The accuracy and the stability of the model are essentially improved by using this regularization. A good agreement with analytical Womersley solution is presented, as well as an improvement of the accuracy over standard L-BGK. Numerical stability of the scheme for a range of Reynolds and Womersley numbers is also presented, demonstrating an enhancement of the stability range of L-BGK for this type of flows.

Keywords: Regularized L-BGK model; Time-harmonic flow; accuracy; numerical stability; 11.25.Hf; 123.1K (search for similar items in EconPapers)
Date: 2007
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DOI: 10.1142/S0129183107010917

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