报告主题：找寻优于Grad的13矩模子

报告人：李若 教授 （北京大学）

报告时间：2020年10月26日（周一） 19:00

参会方法：腾讯 聚会

聚会ID：857 532 323

https://meeting.tencent.com/s/KoRnvkqhEeJA

聚会密码：1026

主理部分：理学院数学系

报告摘要：We point out that the thermodynamic equilibrium is not an interior point of the hyperbolicity region of Grad's 13-moment system. With a compact expansion of the phase density, which is compacter than Grad's expansion, we derived a modified 13-moment system. The new 13-moment system admits the thermodynamic equilibrium as an interior point of its hyperbolicity region. We deduce a concise criterion to ensure the hyperbolicity, thus the hyperbolicity region can be quantitatively depicted.

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