Numerical Study on the Effect of Anode Position on the Performance of Disk MHD Generator

The unsteady-state quasi-one-dimensional numerical simulations of the disk MHD generator have been conducted for various anode position. The results indicate that the non-equilibrium ionization instability of the plasma can be effectively suppressed by the appropriate anode position, and thus, the performance of the non-equilibrium disk MHD generator can be improved. Moreover, when the geometry and boundary conditions of disk MHD generator are determined, the optimal position of the anode is predicted to maximize the enthalpy extraction rate of the generator.