| Issue |
EPL
Volume 83, Number 4, August 2008
|
|
|---|---|---|
| Article Number | 40008 | |
| Number of page(s) | 6 | |
| Section | General | |
| DOI | https://doi.org/10.1209/0295-5075/83/40008 | |
| Published online | 19 August 2008 | |
Lattice Boltzmann modelling Knudsen layer effect in non-equilibrium flows
1
Computational Science and Engineering Department, Daresbury Laboratory - Warrington, WA4 4AD, UK
2
Department of Mechanical Engineering, University of Strathclyde - Glasgow, G1 1XJ, UK
Corresponding authors: g.tang@dl.ac.uk yonghao.zhang@strath.ac.uk
Received:
6
March
2008
Accepted:
5
July
2008
Due to its intrinsically kinetic nature, lattice Boltzmann (LB) approach to simulating non-equilibrium gas flows has recently attracted significant research interest. Compared with other kinetic methods, it can offer a significantly smaller computational cost. To capture the nonlinear high-order rarefaction phenomena in gas flows, a geometry-dependent gas local mean free path has been proposed to be implemented in our “high-order" LB model. A series of tests on rarefaction effects and the Knudsen layer interference have been carried out and the simulation results demonstrate our LB model's capability for highly non-equilibrium flows.
PACS: 05.10.-a – Computational methods in statistical physics and nonlinear dynamics / 47.45.-n – Rarefied gas dynamics / 47.11.-j – Computational methods in fluid dynamics
© EPLA, 2008
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