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ISSN Online: 2377-424X

ISBN Print: 0-89116-559-2

International Heat Transfer Conference 8
August, 17-22, 1986, San Francisco, USA

TRANSIENT NATURAL CONVECTION HEAT TRANSFER IN A CAVITY FILLED WITH A FLUID-SATURATED, POROUS MEDIUM

Get access (open in a dialog) DOI: 10.1615/IHTC8.3850
pages 2659-2664

Résumé

Natural convection flow in a two-dimensional cavity filled with a fluid-saturated, porous medium is considered for Darcy-Rayleigh numbers in the range of 0 to 10,000. The governing differential equations are solved numerically to give the stream function and temperature fields as functions of time and location in the cavity. The numerical analysis is based on a second-order accurate scheme presented by Peyret and Taylor {1}. The local Nusselt number is determined from the temperature field along each surface. Local Nusselt numbers along each surface are reported for the developing flow field at R=1,000 and for the cyclic flow field that develops for R=10,000. Average Nusselt numbers are presented for the full range of Darcy-Rayleigh numbers and several values of the aspect ratio and the temperature boundary condition.