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Two-fluid spin-up in a centrifuge

Published online by Cambridge University Press:  12 April 2006

A. S. Berman ,
J. Bradford  and
T. S. Lundgren
A. S. Berman
Affiliation:
Department of Aerospace Engineering and Mechanics, University of Minnesota, Minneapolis
J. Bradford
Affiliation:
Department of Aerospace Engineering and Mechanics, University of Minnesota, Minneapolis
T. S. Lundgren
Affiliation:
Department of Aerospace Engineering and Mechanics, University of Minnesota, Minneapolis
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Abstract

The behaviour of the interface between two immiscible fluids of different density and viscosity in a centrifuge is investigated both analytically and experimentally. The study includes the interfacial shape and behaviour during both steady and transient operation of the centrifuge. The interface shape is investigated for rigid-body rotation and during slow steady acceleration or deceleration of the centrifuge. The dependence of the interface shape on time is investigated during a rapid spin-up to a slightly different value of the angular velocity, which then remains constant. Some aspects of interface stability are also reported.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 84 , Issue 3 , 13 February 1978 , pp. 411 - 431
Copyright
© 1978 Cambridge University Press

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References

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