高Mach数格子Boltzmann模型的改进

对文献「７」所提出的高Ｍａｃｈ数格子Ｂｏｌｔｚｍａｎｎ模型作了改进，克服了原模型拟结果与理论偏差较大、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，这是目前同类研究的最好结果。

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.