Abstract
Experimental data collected from recent coal-fired MHD generator tests are compared to theoretical predictions. Three independent numerical models are employed for this comparison, a one-dimensional model, a two-dimensional model which includes modeling of the slag layer, and a quasi-three-dimensional model. Comparisons are made between measured gas dynamic and generator electrical performance parameters to those predicted by each method. These comparisons are drawn for a fixed set of generator operating conditions which include an experimentally inferred entrance temperature. The analyses illustrate the effects of flow field dimensionality on generator performance predictions. Discussions on the applications and limitations of each code are included along with suggestions for refinements to achieve an improved modeling of real MHD phenomena.
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