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Stability and heat transfer of rotating cryogens. Part 1. Influence of rotation on the onset of convection in liquid 4He

Published online by Cambridge University Press:  20 April 2006

P. G. J. Lucas
Affiliation:
Department of Physics, University of Oregon, Eugene, OR 97403, U.S.A. Permanent address: Department of Physics, The University, Manchester M13 9PL, England.
J. M. Pfotenhauer
Affiliation:
Department of Physics, University of Oregon, Eugene, OR 97403, U.S.A.
R. J. Donnelly
Affiliation:
Department of Physics, University of Oregon, Eugene, OR 97403, U.S.A.

Abstract

Equipment is described for performing measurements of the Rayleigh–Bénard instability in a sample of rotating liquid 4He. Data are presented on the dependence of the critical Rayleigh number for the onset of convection on Prandtl number in the range 0·49 < Pr < 0·76 and over a range of dimensionless angular velocities 0 < Ω < 200. Evidence for the existence of subcritical convection is presented.

Type
Research Article
Copyright
© 1983 Cambridge University Press

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