Entropy generation for natural convection in an inclined porous cavity

The issue of entropy generation in a tilted saturated porous cavity for lam inar natural convection heat transfer is analysed by solving numerically th e mass, momentum and energy balance equations, using Darcy's law and Boussi nesq-incompressible approximation. As boundary conditions of cavity, two op posite walls are kept at constant but different temperatures and the other two are thermally insulated. The parameters considered are the angle of inc lination and the Darcy-Rayleigh number. When available, present solutions a re compared with known results from the previous researches. Excellent agre ement was obtained between results that validate the used computer code. Th e results show that the calculation of local entropy generation maps are fe asible and can supply useful information for the selection of a suitable an gle of inclination. (C) 2000 Elsevier Science Ltd. All rights reserved.