Influence of Variable Viscosity on Hydromagnetic Non-Darcy Convective-Radiative Heat Transfer Over a Stretching Sheet with Non-Uniform Heat Source/Sink

In this article, the effects of variable temperature-dependent viscosity and thermal conductivity on non-Darcy mixed convection over a stretching sheet embedded in a porous medium in the presence of thermal radiation, non-uniform heat source/sink, and Ohmic dissipation due to transverse magnetic field and electric field are investigated. Comparison of the present numerical results of Nusselt number are found to be in excellent agreement with the earlier published results under some limiting cases.The effects of non-uniform heat source/sink, porosity, Hartmann number, and viscosity parameter are analyzed on velocity and temperature profiles. We see that the fluid velocity increases due to an increase in the porosity parameter, and the effect of increasing the Hartman number increases the temperature profiles for both PST and PHF cases. Another important finding is that the non-uniform temperature-dependent heat source/sink parameters lead to an increase in the temperature profile for both PST and PHF cases.