Author(s): YU Minghao, Yusuke TAKAHASHI, Hisashi KIHARA, Ken-ichi ABE, Kazuhiko YAMADA, Takashi ABE, Satoshi MIYATANI, Department of Aeronautics and Astronautics, Kyushu University, Division of Mechanical and Space Engineering, Hokkaido University, Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Department of Aeronautics and Astronautics, The University of Tokyo
Pages: 749-760
Year: 2015 Issue:  9
Journal: Plasma Science and Technology
Keyword:  inductively coupled plasma; nonequilibrium; electron transport properties; magnetic vector potential;
Abstract: Two-dimensional(2D) numerical simulations of thermochemical nonequilibrium inductively coupled plasma(ICP) flows inside a 10-kW inductively coupled plasma wind tunnel(ICPWT) were carried out with nitrogen as the working gas.Compressible axisymmetric NavierStokes(N-S) equations coupled with magnetic vector potential equations were solved.A fourtemperature model including an improved electron-vibration relaxation time was used to model the internal energy exchange between electron and heavy particles.The third-order accuracy electron transport properties(3rd AETP) were applied to the simulations.A hybrid chemical kinetic model was adopted to model the chemical nonequilibrium process.The flow characteristics such as thermal nonequilibrium,inductive discharge,effects of Lorentz force were made clear through the present study.It was clarified that the thermal nonequilibrium model played an important role in properly predicting the temperature field.The prediction accuracy can be improved by applying the 3rd AETP to the simulation for this ICPWT.