International Journal of Science and Technology (IJST)

Nonuniform Grid based Lattice Boltzmann Method for Numerical Simulation of Glow Discharge Plasma in Argon

Plasma parameters of argon dc glow discharge at 1torr pressure are numerically analyzed. Governing equations are based on the drift-diffusion theory and solved by lattice Boltzmann method (LBM) and finite difference method (FDM). The LBM is employed on non-uniform grid, which is checked by simulating lid-driven cavity flow. Analysis of glow discharge with fixed temperatures for plasma species is performed for comparison between the results on the uniform grid and on the non-uniform one. The results show that the latter is required less computational cost than the former. The simulation of glow discharge is performed with temperature field, whose results are in good agreement with those from the experiments and by COMSOL.