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Boundary-layer transition and the behaviour of spiral vortices on rotating spheres

Published online by Cambridge University Press:  20 April 2006

Y. Kohama  and
R. Kobayashi
Y. Kohama
Affiliation:
Institute of High Speed Mechanics, Tohoku University, Sendai, Japan
R. Kobayashi
Affiliation:
Institute of High Speed Mechanics, Tohoku University, Sendai, Japan
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Abstract

The mechanism of boundary-layer transition and the behaviour of spiral vortices on spheres rotating in otherwise undisturbed fluid were investigated experimentally. Critical and transition Reynolds numbers which determine the laminar-turbulent transition regime on the sphere surface were measured. In addition the number of spiral vortices on the sphere and the direction of the vortex axis were clarified.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 137 , December 1983 , pp. 153 - 164
Copyright
© 1983 Cambridge University Press

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