The analysis of the approaches to the modeling of thermodynamic processes in gas flow at hyperpressure

The paper presents the analysis of the approaches to the modeling of thermodynamic processes in different mathematical models of gas transmission. It is shown how simplifications of mathematical models can result in principally wrong inferences about temperature distribution in a gas flow as well as it is proved that full neglecting of inertial forces is inadmissible even if Mach's number is very small. Explicit dependences of internal energy and specific heat at constant volume on temperature and gas density are found for the two-parameter Redlich–Kwong equation of state. Bibliogr. 16.