A NUMERICAL INVESTIGATION OF HALL AND RADIATION EFFECTS ON MHD THREE-DIMENSIONAL CASSON FLUID FLOW IN A POROUS MEDIUM

This work presents a numerical analysis of the time-dependent three-dimensional hydromagnetic Casson fluid flow along a stretching surface through a porous medium considering the effects of Hall current and nonlinear radiation. The mathematical model of the problem is presented in the form of a set of nonlinear partial differential equations along with suitable boundary conditions. These equations are transformed to a set of nonlinear ordinary differential equations using suitable similarity transformations which are later dealt with the efficient spectral quasi-linearization method (SQLM) to obtain the numerical solution of the considered model. A parametric study involving the emerging physical parameters is performed to analyze the effects of relevant flow parameters on the fluid velocity, fluid temperature, and coefficients of skin-friction and heat transfer at the surface. It is found that the momentum boundary layers, in both directions, get thicker whereas the thermal boundary layer becomes thinner with increasing Hall current.