Psuedo-Shock as a Qualitative Model in the Investigation of the Influence of Wall Roughness on the Performance of Supersonic MHD Generators.
NEBRASKA UNIV LINCOLN DEPT OF MECHANICAL ENGINEERING
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A preliminary study, based on an extension of Croccos pseudo-shock model, has been carried out to explain and predict qualitatively the rather gradual pressure rise in a supersonic MHD generator, to account for the influence of wall roughness on the core flow. A system of non-linear ordinary differential equations is formulated for the wall layer and core, with proper electromagnetic conditions enforced at the interface. Extensive numerical experiments are also presented, which demonstrate indeed the qualitative link between the theory of MHD pseudo-shock and the observed pressure ramp caused by rough walls. Author
- Electric Power Production and Distribution
- Fluid Mechanics
- Plasma Physics and Magnetohydrodynamics