Calculation of 2-temperature plasma thermo-physical properties considering condensed phases: application to CO2–CH4 plasma: part 2. Transport coefficients

Abstract

The transport coefficients, namely thermal conductivity, viscosity and electrical conductivity, of CO2–CH4 mixture in and out of LTE are calculated in this paper. The calculation was based on local chemical equilibrium (LCE) and local phase equilibrium assumption. The 2-temperature composition results obtained with consideration of condensed phase in the previous paper (Part I) of this series were used in this calculation. The transport coefficients were calculated by classical Chapman–Enskog method simplified by Devoto. The results are presented for different temperatures (300–30 000 K), pressures (0.1–10 atm), non-equilibrium degrees (1–5), and CH4 molar proportions (0–100%). The influence of condensed graphite, non-LTE effect, mixture ratio and pressure on the composition and thermodynamic properties has been discussed. The results will serve as reliable reference data for computational simulation of CO2–CH4 plasmas.