ISSN Online: 2377-424X
ISBN Print: 0-85295-345-3
International Heat Transfer Conference 10
NATURAL CONVECTION IN A CAVITY DIVIDED BY A PERMEABLE PLATE
摘要
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.
By using Laser Doppler Anemometry, measurements of the velocity profiles in an air-filled cavity show rather good agreement with the numerical results.