Operational Equations of State for Hydrocode: Computer Implementation

Formally, the central feature of the equation of state (EOS) for hydrocode is in the choice of the specific volume V and specific internal energy density E as independent thermodynamic parameters. We suggest and explore the properties of the complete EOS for hydrocode having the following form S(V,E)=α(V)+β(E) where α(V) and β(E) are functions that should be determined from experiment. This class of EOS includes the case of perfect gas as very special example. We, then, proceed with the Dulong-Petit model. It is defined as the EOS with a constant heat capacity Cv. For the Dulong-Petit model we also discuss the procedure of computer implementation, and demonstrate our methodology by analyzing experimental data for the stainless steel.