用状态方程研究硬球模型液体的声速及其热力学关系

Ultrasound velocity and related thermodynamic properties with equation of state for hard sphere liquids

将基于分布函数理论的状态方程应用于硬球模型液体，给出了超声波声速及其热力学关系的表达式。

Using the carnahan starling equations of state which contains modified properties of inner pressure, some analytical expresions are derived in hard sphere liquids, including isothermal compressibility, isobaric expansibility, heat capacity and ultrasound velocity. The values of the expresions are calculated in 9 kinds of typical hard sphere liquids, especially that of the ultrasound velocity. The results are found to be in agreement with those of the experiments.