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Combined forced and natural convection with low-speed air flow over horizontal cylinders

Published online by Cambridge University Press:  29 March 2006

A. P. Hatton ,
D. D. James  and
H. W. Swire
A. P. Hatton
Affiliation:
University of Manchester Institute of Science and Technology
D. D. James
Affiliation:
University of Manchester Institute of Science and Technology
H. W. Swire
Affiliation:
University of Manchester Institute of Science and Technology
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Abstract

This article describes experimental work on the mixed convection régime with flow normal to electrically heated cylinders. The forcing velocities used were in the range 0·0085–3 ft./sec (i.e. 10−2 < Ref < 45) and temperature differences in the range 30°C to 200°C (i.e. 10−3 < Ra < 10) were covered.

Correlations are proposed for the forced convection and natural convection conditions. A correlation is also developed for the combined forced and natural convection region by a vectorial addition of the flow parameters, which gives good agreement with the experiments except over a limited range in the contraflow régime.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 42 , Issue 1 , 4 June 1970 , pp. 17 - 31
Copyright
© 1970 Cambridge University Press

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