The calculation of the speed of sound and other thermophysical properties
Avsec, Jurij ; Marčič, Milan
The paper features the mathematical model of computing the velocity of sound and other thermophysical properties in the liquid, gas and two-phase domain with the help of statistical thermodynamics. ...The paper features all important contributions (translation, rotation, internal rotation, vibration, intrmolecular potential energy and influence of electron and nuclei excitation). To calculate the thermodynamic properties of real gases we developed the cluster theory which yields better results than the virtual equation. For the realm of real liquids the Johnson-Zollweg-Gubbins model based on the modified BWR equation was applied. The Lennard-Jones intermolecular potential was used. The analytical results are compared with the classical data and models obtained by classical thermodynamics. A relatively good agreement is observed.
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