Boundary-layer analysis of forced convection with a plate and porous substrate

Summary.The classical boundary-layer analysis of Blasius and Pohlhausen for forced convection from a flat plate in the presence of a uniform external stream is extended to the case where a thin layer of a porous medium is attached to the plate. It is found that the effect of the porous layer is to increase the heat flux as represented by a Nusselt number, and to within the approximations made this increase is independent of the Darcy number. The deviation increases with the Prandtl number, and also increases with the new parameter ξ defined by Eq. (9).