Abstract

The heat and mass transfer characteristics in mixed convection along a semi-infinite plate in a fluid saturated porous medium with radiative heat transfer has been investigated. Diffusion-thermo and thermo-diffusion effects are assumed to be significant. Using a similarity transformation, the governing steady boundary layer equations for the momentum, heat and mass transfer were reduced to a set of ordinary differential equations and then solved using a recent novel linearization method and the Keller-box method. The results were further confirmed by using the Matlab bvp4c numerical routine. The effects of the Dufour and Soret parameters on the local skin friction and the local heat and mass transfer rates are investigated. Numerical results for the velocity and the temperature profiles are also presented.

Key words: Vertical flat plate, porous medium, cross diffusion, radiation, successive linearization method.