MHD Boundary Layer Flow in Double Stratification Medium

Magnetohydrodynamic (MHD) fluid flow over an exponentially permeable stretching sheet in a thermally and chemically stratified porous medium with heat source is investigated. The partial differential equations are reduced to ordinary differential equations using suitable similarity transformation, which are then solved numerically with MAPLE software. The effect of the pertinent parameters on the flow, heat and mass transfer characteristics are examined graphically. The results indicated that the velocity profile decreases with increasing value of porosity, magnetic, and suction parameters. The temperature increases with porosity, magnetic and heat source parameters. The concentration profile increases with the increase in porosity and magnetic parameters. Thermal stratification reduces the temperature while chemical stratification reduces the concentration of the fluid. (paper)