Mixed Convection from an Exponentially Stretching Surface in Non-Darcy Porous Mediumin the Presence of Soret and Dufour Effects

Abstract

The Soret and Dufour effects on mixed convection flow, heat and mass transfer from an exponentially stretching vertical surface in a quiescent fluid saturated non-Darcy porous medium is analyzed. Stretching velocity, temperature and concentration distributions are assumed to have specific exponential function forms. The governing partial differential equations are transformed into ordinary differential equations using similarity transformations and then solved numerically. An analysis of the results obtained shows that the flow field is influenced appreciably by the physical parameters involved in the problem in both aiding and opposing flow situations.