• MIXED CONVECTION FLOW OF A MICROPOLAR FLUID WITH CONCENTRATION IN A VERTICAL CHANNEL IN THE PRESENCE OF HEAT SOURCE OR SINK

Abstract

An analysis is presented to investigate the effects of vortex viscosity parameter and the buoyancy ratio on the fully developed mixed convection heat and mass transfer of a micropolar fluid in a vertical channel with heat source or sink and concentrations. The exact solutions are found for the velocity, microrotation velocity, heat transfer and mass transfer. It is found that an increase in the vortex viscosity parameter enhances the microrotation velocity and decreases the fluid velocity for both heat source and sink. The buoyancy ratio enhances the microrotation velocity and accelerates the velocity for heat source and sink. The effect of heat sink is to suppress the microrotation velocity and velocity whereas heat source enhances the velocity and decreases the microrotation velocity. The volumetric flow rate, the total heat rate and the total species rate added to the micropolar fluids are lower than those of Newtonian fluid for both heat source and sink.