Abstract
Experimental data collected from coal-fired MHD generator tests conducted at the University of Tennessee Space Institute, Energy Conversion Facility are compared to theoretical predictions. Three distinct numerical, steady flow models are used in these comparisons which include one-dimensional, two-dimensional, and quasi three-dimensional techniques. Comparisons are made between measured gasdynamic and electrical performance parameters to those predicted at a fixed set of generator operating conditions which include an experimentally inferred entrance temperature. These analyses serve to illustrate the effects of flowfield dimensionality on generator performance predictions. Discussions of the applications and limitations of each analytical model are included along with suggestions for further refinements of each to achieve a better representation of real MHD phenomena.
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