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ISSN Online: 2377-424X

ISBN Print: 0-89116-909-1

International Heat Transfer Conference 9
August, 19-24, 1990 , Jerusalem, Israel

NATURAL CONVECTIVE FLOW IN A CAVITY WITH CONDUCTING TOP AND BOTTOM WALLS

Get access (open in a dialog) DOI: 10.1615/IHTC9.3140
pages 263-268

Résumé

The flow in a cavity which has top and bottom walls of the same thickness with the same specified conductivity has been numerically studied, the flow in the cavity and the conduction in the top and bottom walls being simultaneously calculated. The flow has been assumed to be laminar and two-dimensional. Fluid properties have been assumed constant except for the density change with temperature that gives rise to the buoyancy forces, this being treated by means of the Boussinesq approximation. The governing equations, expressed in terms of stream function and vorticity, have been written in dimensionless form. The resultant equations have been solved using the finite-element method. Results have been obtained for a range of values of the governing parameters.
These results indicate that neither of the conventional assumptions for an adiabatic or for a perfectly conducting top and bottom wall is likely to give a good description of the situation that exists in many experimental studies.