Host: The Society of Chemical Engineers, Japan
The purpose of this work is to develop chemically non-equilibrium modeling of induction thermal plasmas to investigate characteristics of thermal plasmas with chemically reactive gas. A non-equilibrium modeling of argon-oxygen induction thermal plasmas was performed without chemical equilibrium assumptions. The thermofluid and concentration fields were obtained by solving of two-dimensional modeling. Chemical reaction kinetics rates of the dissociation and recombination as well as the ionization were taken into account in this modeling. The transport properties were estimated using Chapman-Enskog method with higher order of Sonine polynomial expansion with collision integrals at each of the calculation step. As a result, the high-temperature region and particle distribution spread outside at the coil region in the chemically non-equilibrium model. Deviation from the Local Thermodynamic Equilibrium (LTE) assumption at the coil region is not negligible in argon-oxygen induction plasmas under atmospheric pressure.
