Hydromagnetic simultaneous heat and mass transfer by mixed convection froma vertical plate embedded in a stratified porous medium with thermal dispersion effects

The problem of steady, laminar, hydromagnetic simultaneous heat and mass tr ansfer by mixed convection flow over a vertical plate embedded in a uniform porous medium with a stratified free stream and taking into account the pr esence of thermal dispersion is investigated for the case of power-law vari ations of both the wall temperature and concentration. Certain transformati ons are employed to transform the governing differential equations to a loc al similarity form. The transformed equations are solved numerically by an efficient implicit, iterative, finite-difference scheme. The obtained resul ts checked against previously published work on special cases of the proble m and are found to be in excellent agreement. A parametric study illustrati ng the influence the magnetic field, porous medium inertia effects, heat ge neration or absorption, lateral wall mass flux, concentration to thermal bu oyancy ratio, and the Lewis on the fluid velocity, temperature and concentr ation as well as the Nusselt and the Sherwood numbers is conducted. The res ults of this parametric study is shown graphically and the physical aspects of the problem are discussed.