MHD Free Convective Heat and Mass Transfer of a Micropolar Fluid Flow over a Stretching Permeable Sheet with Constant Heat and Mass Flux
E. O. Fatunmbi *
Department of Mathematics and Statistics, Federal Polytechnic, Ilaro, Ogun State, Nigeria.
A. S. Odesola
Department of Mathematics, University of Lagos, Akoka, Lagos State, Nigeria.
*Author to whom correspondence should be addressed.
Abstract
This study investigates heat and mass transfer of chemically reacting and electrically conducting micropolar fluid flow past a vertical stretching permeable sheet in a Darcy-Forchheimer porous medium with constant heat and mass flux and in the presence of heat source/sink. A magnetic field of uniform strength is applied normal to the stretching sheet. The governing partial differential equations governing the flow are transformed into nonlinear coupled ordinary differential equations using appropriate similarity transformations. The resulting equations are solved by shooting method alongside fourth order Runge-Kutta integration scheme. The effects of various flow physical parameters are found on the dimensionless velocity, temperature, concentration and microrotation profiles as well as on the skin friction, wall couple shear stress, Nusselt and Sherwood numbers. It was found that micropolar fluid exhibits a reduction in shear stresses as compared to Newtonian fluids.
Keywords: Stretching sheet, non-Newtonian fluid, magnetohydrodynamic, micropolar fluid.