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Experiments on the stability of viscous flow between two concentric rotating spheres

Published online by Cambridge University Press:  20 April 2006

Manfred Wimmer
Manfred Wimmer
Affiliation:
Institut für Strömungslehre und Strömungsmaschinen, Universität Karlsruhe, Germany
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Abstract

Experimental results concerning the onset of instability in a spherical gap are presented, for the case in which the gap width is not too large with respect to the radius. The two spheres may be rotated in the same direction or in opposite directions. The resulting flow field and some special observations are described. The first onset of instability is recorded and the results are summarized in stability diagrams. It is shown that Taylor's calculations for rotating cylinders are also valid for rotating spheres. Finally, further experimental results by several authors concerning the onset of instabilitty between rotating cylinders are compared with those for rotating spheres.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 103 , February 1981 , pp. 117 - 131
Copyright
© 1981 Cambridge University Press

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