高Mach数格子Boltzmann模型的改进

MODIFIED LATTICE BOLTZMANN MODEL FOR HIGH MACH-NUMBER FLOW SIMULATION

对文献 [7]所提出的高Mach数格子Boltzmann模型作了改进 ,克服了原模型模拟结果与理论结果偏差较大、存在色散效应的缺陷 ,并进一步把Mach数提高到 5以上 ,据我们所知 。

We have improved the lattice Boltzmann model for high Mach\|number flow simulation presented by the present authors previously and decrease the errors between measurement sound speed and theoretical one greatly and remove the non\|physical disperse effect, which existed in the original model. The modified model can simulate flows with Mach number higher than 5, which is the best result of its kind ever obtained, so far as we know.