Numerical simulation of thermodynamic parameters of carbon

To increase the reliability of describing the thermodynamic parameters of shock-wave loading of carbon in its pure form, as well as a component of materials and heterogeneous mixtures, including carbon, it is proposed to use a modified equation of state for the calculations using a thermodynamically equilibrium model. The parameters of the equations of state for graphite and diamond are determined. The thermodynamic parameters for graphite and diamond of different porosities are modeled. The values of compression along the shock adiabat are determined and the specific heat along the normal isobar, as well as the values of the enthalpy, thermodynamic potential, and entropy for graphite and diamond as a function of temperature, are calculated. Using the results obtained, a phase diagram of carbon is constructed.