Entropic property of the Ellipsoidal Statistical model with the Prandtl number Pr below 2/3 is discussed. Although 2/3 is the lower bound of Pr for the H theorem to hold unconditionally, it is shown that the theorem still holds even for $ \mathrm{Pr}<2/3 $, provided that anisotropy of stress tensor satisfies a certain criterion. The practical tolerance of that criterion is assessed numerically by the strong normal shock wave and the Couette flow problems. A couple of moving plate tests are also conducted.

中文翻译：

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prandtl数小于2/3的椭球统计模型的熵性质

讨论了Prandtl数Pr小于2/3的椭球统计模型的熵性质。尽管2/3是H条件无条件成立的Pr的下界，但表明只要压力张量的各向异性满足特定条件，该定理对于$ \ mathrm {Pr} <2/3 $仍然成立。 。该标准的实际公差是通过强法向冲击波和库埃特流动问题以数字方式评估的。还进行了几个移动板测试。