Numerical Studies of Flow Behavior and Performance in a Pulse-Detonation-Driven MHD generator

摘要

[Abstract] The flow dynamical behavior and the performance of a pulse-detonation-driven magnetohydrodynamic (MHD) electrical power generator are examined numerically. A two-dimensional, finite rate chemistry computational fluid dynamics model is implemented for the simulation of pulse-detonation-driven MHD power generation. Cesium seeded stoichiometric hydrogen-air mixture is used as the working fluid and detonated at atmospheric pressure in the generator. It is confirmed the transition from the detonation to the shock wave occurs in the external region. Furthermore, it is revealed that the generator with converging-diverging nozzle can provide significant improvement in the performance in comparison with a linear generator.