Thermal radiation effect on an unsteady magnetohydrodynamic flow past inclined porous heated plate in the presence of chemical reaction and viscous dissipation

An analysis is made for the unsteady magnetohydrodynamic (MHD) flow of a viscous, incompressible, electrically conducting fluid in a porous medium. Considering the viscous dissipative term in energy equation which is important in free convective flow. The coupled non-linear partial differential equations are solved by using an implicit finite difference method of Crank Nicolson type. The effects of chemical reaction, viscous dissipation and radiation on velocity, temperature and concentrations are discussed. More importantly, the results of numerical solution of the present study agree well with the analytical solution of the earlier study in a particular case (i.e. without viscous dissipation). It is interesting to note that the Hartmann number reduces the velocity at all points of the flow domain as expected. An increase in viscous dissipation contributes slightly but uniformly to the rise of temperature as well as velocity distribution.