亜音速非平衡ディスク形MHD発電機における負荷切替え時の過渡現象

抄録

The transient phenomena in a nonequilibrium disk subsonic MHD generator at load changes were examined with time dependent quasi-one-dimensional numerical simulations. When load resistance is suddenly changed, fluid-dynamical disturbances are caused near the anode and cathode. When the steady discharge is sustained, the disturbances gradually disappear in the generator channel after propagating and being re-flected at the boundaries. Thus, it is confirmed that the generator works stably at load changes, although the over-shooting in Hall potential is induced transiently. If the load resistance is changed as lower as the unsteady plasma appears, the disturbances attributed to it remain in the generator.