Entropy Generation During Mixed Convection in a Porous Double-Lid-Driven Cavity

Abstract

The issue of entropy generation in a vertically two-sided lid-driven square cavity filled with porous medium for mixed convection heat transfer is analysed by solving numerically the mass, momentum and energy balance equations, using Darcy’s law and Boussinesq-incompressible approximation. Two opposite vertical walls are kept at different temperatures, while the bottom as well as the top walls is adiabatic. We have used Higher Order Compact (HOC) scheme [1] to discretize the governing equations. Entropy generation terms involving thermal and velocity gradients are evaluated accurately based on the elemental basis set via the Pade approximation method. We have first solved benchmark problem given in [2]. Excellent agreement was obtained between benchmark results and the results that validate our used computer code.