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ISSN Online: 2377-424X

ISBN Print: 0-85295-345-3

International Heat Transfer Conference 10
August, 14-18, 1994, Brighton, UK

NATURAL CONVECTION IN A CAVITY DIVIDED BY A PERMEABLE PLATE

Get access (open in a dialog) DOI: 10.1615/IHTC10.3480
pages 1-6

Sinopsis

The effect of a thin perforated plate within a vertical, differentially heated cavity on convective heat transfer is studied numerically and experimentally. In order to model the flow at the perforated plate, the Saffman boundary condition is used for the tangential component of the velocity which, in turn, is included as a drag term into the momentum equation. The effects of the hydrodynamical and thermal properties of the perforated plate on the flow configuration and overall heat transfer are considered. It is shown that the results are independent of the thickness of the perforated plate if this one is thin enough. A parametric study shows that the flow configuration and heat transfer rate depend mainly on the transverse flow resistance and effective thermal conductivity of the plate.
By using Laser Doppler Anemometry, measurements of the velocity profiles in an air-filled cavity show rather good agreement with the numerical results.