Improvement in the Performance of Nonequilibrium Plasma MHD Generator Based on the Development Road Map

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The aim of the present research is to clarify the necessary requirements which should be fulfilled in a highly efficient non-equilibrium plasma MHD generator. The following approaches have been attempted in order to reduce fluid-dynamical and electrical dissipations in the MHD generator ; (1) the optimization of the generator shape (the reduction of fluid-dynamical dissipation), (2) the improvement of electrical efficiency by applying a high magnetic flux density (the reduction of electrical dissipation), (3) the suppression of the ionization instability by applying a radio-frequency electromagnetic field (plasma stabilization), and (4) the estimate and evaluation from the numerical simulation.It has been successfully demonstrated in the electrical power generation experiments that the improvement in the isentropic efficiency along the development road map of the MHD generator are achievable by means of the optimization of the generator shape. Furthermore, a high power density has been recorded under high magnetic flux density, and the nonequilibrium plasma in the MHD generator is controllable and stabilized by applying radio-frequency electromagnetic field, which surely result in the improvement in the generator performance. These encouraging experimental results have been confirmed and supported from the corresponding numerical simulations with two-dimensional LES (Large Eddy Simulation) model.As a result of the present research, "Improvement in the performance of nonequilibrium plasma MHD generator based on the development road map" was successfully demonstrated, and the fruitful results obtained here surely contribute to the advancement in the research and development of the non-equilibrium plasma MHD electrical power generation.