每年出版 12 期
ISSN 打印: 1091-028X
ISSN 在线: 1934-0508
Indexed in
NON-DARCY AND LOCALIZED HEATING EFFECTS ON BENARD CONVECTION IN POROUS ENCLOSURE
摘要
Benard convection in a porous medium using the non-Darcy model with localized heating is studied numerically in the present paper. The Forchheimer−Brinkman-extended Darcy model is used in the mathematical formulation for the porous layer. The governing parameters considered are the heater size (0.2 ≤ H ≤ 1), the Rayleigh number (102 ≤ Ra ≤ 105), the porosity of the porous medium (0.4 ≤ ε ≤ 0.99), the Darcy number (10−5 ≤ Da ≤ 10−2), and the thermal conductivity ratio of solid matrix to fluid (1 ≤ ka/kf ≤ 10). The Prandtl number is fixed at Pr = 1. It is found that an extremum heat transfer rate occurs about H = 0.8 for any value of the porosity and any porous material considered.
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Nield Donald A., Bejan Adrian, Internal Natural Convection: Heating from the Side, in Convection in Porous Media, 2017. Crossref