格鲁尼森数是一个无量纲的热力学参数，通常被用来描述固体的热力学性质．由于其对流体的临界点不敏感，它对于检验非理想流体的热力学性质也有指导意义．本文通过计算多种流体在不同温度和压力下的格鲁尼森数，发现其数值在宽广区域里变化稳定，进而论述了格鲁尼森数与其他热力学参数的关系．以PR方程和BWR方程为例，阐述了格鲁尼森数对于检验状态方程完善性的标尺性作用．
Griineisen Parameter is a nondimensional property usually used for describing the thermodynamic behavior of solid materials. By calculating the Grtineisen parameter of various fluids at different temperatures and pressures, the relationship with other thermodynamic properties are analyzed. Grtvneisen parameter changes steadily and unconspicuously in a wide range. As it is insensitive in the critical region, it could be introduced as a ruler to measure the imperfetion of the equation of state of non-ideal fluids, such as P-R and B-W-R equations of state.
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