Thermodynamic properties and transport coefficients in Ar–H2–Cu plasmas

Abstract

This paper deals with the calculation of thermodynamic properties and transport coefficients in Ar–H2–Cu mixtures at atmospheric pressure in the temperature range between 300 and 25 000 K. From the equilibrium composition and the species thermochemical properties, the thermodynamic properties are obtained directly. The calculation of the transport coefficients—viscosity, electrical conductivity and thermal conductivity—is based on the Chapman–Enskog approximation. The necessary data are collision integrals, particle densities and thermodynamic properties. Special attention has been devoted in this paper to the study and the choice of the collision integrals for each interaction. The first results concern the influence of this choice on the transport coefficients. The general results show that the influence of the copper vapour presence on the thermodynamic properties and on the transport coefficients can be important at intermediate temperatures.