求教

3.14布

想问问无量纲松弛时间一般是怎么确定的啊？找不到这方面文献啊

luo@odu.edu

Well, there are a number of papers on this. The determination of the relaxation rates is based on the following:

1) The dimensionless parameters, such as Reynolds number;
2) The accuracy of boundary conditions;
3) The numerical stability.

You can read the following papers and references there in:

P. Lallemand and L.-S. Luo.
Theory of the lattice Boltzmann method: Dispersion, dissipation, isotropy, Galilean invariance, and stability.
Physical Review E 61:6546-6562 (June 2000)

L.-S. Luo, W. Liao, X. Chen, Y. Peng, and W. Zhang.
Numerics of the lattice Boltzmann method: Effects of collision models on the lattice Boltzmann simulations.
Physical Review E 83(5):056710 (May 2011)

3.14布

谢谢您的解答！