RT Journal Article
ID 369992c8122b334a
A1 Saleh, Habibis
A1 Fudholi, Ahmad
A1 Hashim, Ishak
T1 NATURAL CONVECTION IN A PARTIALLY OPEN-ENDED POROUS SQUARE CAVITY
JF Journal of Porous Media
JO JPM
YR 2014
FD 2014-07-29
VO 17
IS 7
SP 563
OP 572
K1 natural convection
K1 Forchheimer-Brinkman model
K1 open cavity
AB Natural convective heat transfer in an open-ended porous square cavity is studied numerically in the present article. The left surface has a constant temperature and the right surface is a partial opening to the ambient, permitting air to flow inside the cavity by virtue of buoyancy, while the outer surfaces are all insulated. The Forchheimer-Brinkman-extended Darcy model is used in the mathematical formulation for the porous layer, and the COMSOL Multiphysics software 4.1 is applied to solve the dimensionless governing equations. P2−P1 lagrange elements and Galerkin least-square are used to assure the stability. The governing parameters considered are the aperture size, 0.3 ≤ H ≤ 1, the thermal conductivity ratio of solid matrix to fluid (1 ≤ ks/kf ≤ 20), the porosity of porous medium, 0.4 ≤ ε ≤ 0.99, and the
Rayleigh number, 103 ≤ Ra ≤ 106. The results are presented to show the effect of these parameters on the fluid flow and
heat transfer characteristics. It is found that the strength of the flow circulation and heat transfer rate are much higher for a larger opening. It is also found that the heat transfer enhancement by increasing the opening can be scaled directly from the porosity value.
PB Begell House
LK https://www.dl.begellhouse.com/journals/49dcde6d4c0809db,0cf033db05fb8df4,369992c8122b334a.html