摘要
应用单松弛的BGK型的LatticeBoltzmann方程(LBE),模拟有粘性的一维小扰动波的传播.由格子气Boltzmann理论出发得到的小扰动方程的理论解与直接用LatticeBoltzmann方法得到的数值解,在相同条件下符合的很好.并用按均方差最小原则调整松弛因子τ的方法,给出了数值实验粘性系数,验证了LatticeBoltzmann理论中的τ-η曲线.
Using a BGK-type Lattice Boltzmann method, this paperdeals with the problem of propagation of one dimensional small--perturbed waves. The results of LBM numerical simulations are in good agreement with those of theoretical formula derived from LBM. To check the theoretical r--V curve,the numerically experimental viscosity was calculated using the method of least squares.
出处
《吉林大学自然科学学报》
CAS
CSCD
1996年第4期23-27,共5页
Acta Scientiarum Naturalium Universitatis Jilinensis
基金
国家自然科学基金
关键词
BGK模型
格子气
数值实验
粘性系数
波
Lattice Boltzmann method, BGK-type, Lattice gas wave,numerically experimental viscosity