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Experimental studies in magneto-fluid dynamics: pressure distribution measurements around a sphere

Published online by Cambridge University Press:  28 March 2006

T. Maxworthy
T. Maxworthy
Affiliation:
Jet Propulsion Laboratory California Institute of Technology, Pasadena, California
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Abstract

Measurements of the pressure distribution around a sphere placed in aligned magnetic and velocity fields show that an increase in drag is mainly due to a decrease in the pressure on the base of the body. When magnetic forces are large compared to inertia forces, this decrease is due to a loss in total pressure along streamlines just outside the surface boundary layer and an acceleration of the flow to a velocity much larger than the reference velocity. Separation of a viscous boundary layer takes place behind the equator and still, to a large extent, controls the magnitude of the base pressure and the drag experienced by the sphere. A model consistent with these findings is presented.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 31 , Issue 4 , 18 March 1968 , pp. 801 - 814
Copyright
© 1968 Cambridge University Press

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