Soret and Dufour effects on mixed convection in a non-Darcy porous medium saturated with micropolar fluid

Abstract

The Soret and Dufour effects on the steady, laminar mixed convection heat and mass transfer along a semi-infinite vertical plate embedded in a micropolar fluid saturated non-Darcy porous medium with heat and mass flux conditions are investigated. The non-linear governing equations and their associated boundary conditions are initially cast into dimensionless forms using similarity transformations. The resulting system of equations is then solved numerically using the Keller-box method. The numerical results are compared and found to be in good agreement with previously published results as special cases of the present investigation. The non-dimensional velocity, microrotation, temperature and concentration profiles are displayed graphically for different values of coupling number, Forchheimer number, Soret and Dufour numbers. In addition, the skin-friction coefficient, Nusselt number and Sherwood number are shown in a tabular form.