Natural Convection in a Vertical Annulus Containing Water Near the Density Maximum

[+] Author and Article Information
D. S. Lin, M. W. Nansteel

Department of Mechanical Engineering and Applied Mechanics, University of Pennsylvania, Philadelphia, PA 19104

J. Heat Transfer 109(4), 899-905 (Nov 01, 1987) (7 pages) doi:10.1115/1.3248201 History: Received October 03, 1986; Online October 20, 2009


Steady natural convection of water near the density extremum in a vertical annulus is studied numerically. Results for flow in annuli with aspect ratio 1≤A≤8 and varying degrees of curvature are given for 103 ≤Ra≤105 . It is shown that both the density distribution parameter R and the annulus curvature K have a strong effect on the steady flow structure and heat transfer in the annulus. A closed-form solution for the vertical flow in a very tall annulus is compared with numerical results for finite-aspect-ratio annuli.

Copyright © 1987 by ASME
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