予備電離希ガスプラズマMHD発電機におけるプラズマ構造と発電出力の数値的検討

抄録

Plasma structure in a pre-ionized inert gas plasma disk-shaped Hall-type MHD generator has been examined under the isentropic gas flow with r-θ two-dimensional time-dependent numerical simulation. Although uniform plasma can be realized for adequate load resistance, non-uniform structure rotating counter-clockwise appears in the downstream region for low load resistance and strongly non-uniform spiral structure plasma rotating clockwise is caused for high load resistance. These plasma structures qualitatively coincide with the experimental observation.