相对论性理想流体熵密度的计算

求解自引力非辐射体系的熵结构，这个问题很有意义．本文一般地导出相对论性流体热力学第二定律的协变表达式．利用理想流体的熵流守恒和局域能量守恒等基本守恒律推导出熵密度的计算公式．

Ascertainment of Entropy Density of Relativistic Ideal Fluid

It is very interesting that the entropy structure of the non-radiation of self-gravitation is discussed. This paper ascertains the relativistic covariance of the second law of thermodynamics in general terms. These conservations of the entropy flux of ideal fluid and the local energy and all that are used to make a deduction of the entropy density.