Soret and Dufour effects on mixed convection flowof couple stress fluid in a non-darcy porous medium with heat and mass fluxes

Abstract

Original Manuscript Submitted: 6/25/12; Final Draft Received: 7/8/2013 An analysis is presented to investigate the Soret and Dufour effects on mixed convection heat and mass transfer along a semi-infinite vertical plate embedded in a non-Darcy porous medium saturated with couple stress fluid with flux dis-tributions. The governing nonlinear partial differential equations are transformed into a system of ordinary differential equations using similarity transformations and then solved numerically. Profiles of dimensionless velocity, tempera-ture, and concentration are shown graphically for various values of Dufour number, Soret number, and couple stress parameter. Nusselt number and Sherwood numbers are calculated and presented in table form.