Nonsimilar Solutions for Mixed Convection of Water at 4 ℃ Over a Vertical Surface with a Convection Boundary Condition in a Porous Medium

摘要

A boundary layer analysis has been presented for the mixed convection of water at 4 ℃ over a vertical plate embedded in a porous medium. The Robin or convective boundary condition at the surface has been considered where the heat lost from the surface is the product of a heat transfer coefficient and the temperature difference between the surface and the free stream. The governing non-similar boundary layer equations for both the forced and free convection dominated regimes were solved numerically by means of an implicit finite difference method. The friction factor and dimensionless heat transfer rate (Nusselt number) are presented for several values of the dimensionless heat transfer coefficient and buoyancy parameter.