Modification of Godunov method for calculations of discontinuous two-temperature flows of low-temperature rare gas plasma

The paper presents the implementation of Godunov method for shocked flows of two-temperature rare gas plasma. An algorithm for cell edge convective fluxes calculation was developed. Algorithm is based on the solution of Riemann problem in rare gas plasma and includes accurate consideration of electrons adiabatic expansion. The theory uses the assumption that ionization and electrons-molecules collisional heat exchange rates are compatible with the characteristic time of the flow and can be neglected in Riemann problem solution. (paper)