Investigation of Natural Convection in a Vertical Cavity Filled with a Anisotropic Porous Media

In present paper, a numerical analysis for a rectangular cavity filled with aanisotropic porous media has been studied. it is assumed that the horizontal walls are adiabaticand impermeable, while the side walls of the cavity are maintained at constant temperatures andconcentrations. the buoyancy force that induced the fluid motion are assumed to be cooperative. inthe two extreme cases of heat-driven (n £ 1) and solute-driven (n ³ 1) natural convection, scaleanalysis is applied to predict the order of magnitudes involved in the boundary layer regime.especially, the effects of anisotropic properties on heat and mass transfer have been considered.the variation of nusselt and sherwood numbers for values of permeability ratio for a wide range ofthermal rayleigh number, buoyancy ratio, and lewis number are presented. it is demonstrated thatthe anisotropic properties of the porous medium considerably modify the heat and mass transferrates from that expected under isotropic conditions.