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Three-dimensional flow in a closed thermosyphon

Published online by Cambridge University Press:  20 April 2006

G. D. Mallinson ,
A. D. Graham  and
G. De Vahl Davis
G. D. Mallinson
Affiliation:
Department of Defence, Defence Science and Technology Organisation, Aeronautical Research Laboratories, Melbourne, Australia
A. D. Graham
Affiliation:
Department of Defence, Defence Science and Technology Organisation, Aeronautical Research Laboratories, Melbourne, Australia
G. De Vahl Davis
Affiliation:
University of New South Wales, Sydney, Australia
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Abstract

A numerical and experimental study has been made of the three-dimensional flow and heat transfer by natural convection in a closed, rectangular thermosyphon. At low Rayleigh numbers, the flows in the two halves of the cavity remain separate, with heat transfer across the mid-height plane occurring only by conduction. At increasing Rayleigh numbers, an exchange process of increasing complexity occurs. The numerical solutions were used to explore this process and to predict flow patterns which were found to resemble closely those observed during previous investigations of cylindrical thermosyphons. The results were verified by a flow visualization study. Heat-transfer rates are presented and augment previous data for higher values of the governing parameters.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 109 , August 1981 , pp. 259 - 275
Copyright
© 1981 Cambridge University Press

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References

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