Convective Heat Transfer Analysis in a Trapezoidal Porous Cavity Using Al2O3-kerosene Nanofluid

Abstract

A numerical study is conducted to investigate the transport mechanism of mixed convection in a lid-driven trapezoidal porous cavity filled with Al2O3-kerosene nanofluid. The left vertical wall moving at a constant speed and right inclined wall of the enclosure are insulated while the bottom horizontal wall is kept at constant temperature. The Galerkin weighted residual technique of finite element method (FEM) is used for simulation. Numerical solutions are obtained for a wide range of parameters. The streamlines, isotherm plots and the variation of the average Nusselt number at the bottom hot wall are presented and discussed elaborately. It is observed that the average heat transfer rate at the bottom surface is highest for the higher values of Darcy number.