Abstract
The performance of an Ar ‐Cs magnetohydrodynamics (MHD) disk generator with strong interaction has been numerically examined and compared with experimental data, leading to the following results: 1) It has been demonstrated for the e rst time that numerical analyses with the quasi-one-dimensional approximation without an artie cial parameter can predict the overall generator performance of a closedcycle disk MHD generator with strong interaction. The local phenomena of gasdynamics and electrodynamics can be predicted near the designed condition, but some error of prediction is seen under offdesigned conditions. 2 ) It is predicted that instabilities grow near a short-circuit condition. It is demonstrated that the proposed scheme of calculation of ionization is important. 3 ) The present results suggest that large joule heating is required for the stability of e ow, but too much joule heating reduces the generator performance and, therefore, multiloading is suggested for improved generator performance.
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