Numerical Simulation on Influence of Dust Particles in Disk CCMHD Generator

Abstract

The Influence of dust particles in closed cycle disk MHD generator driven with Ar+Cs working gas is evaluated numerically. A model of the nonequilibrium seeded plasma with dust particles is proposed. Electron number density decreases in the regimes of weakly ionized seed and noble gas due to the minglement of dust particles. It is confirmed from γ-θ two dimensional numerical simulations with the present model that the designed performance can be maintained below a critical amount of dust particles. When the amount of dust particles exceeds the critical value, however, discharge structre becomes nonuniform. As a result, the output power is markedly reduced.