THERMAL RADIATION EFFECTS ON MAGNETOHYDRODYNAMIC FLOW AND HEAT TRANSFER IN A CHANNEL WITH POROUS WALLS OF DIFFERENT PERMEABILITY

This paper deals with the problem of thermal radiation effects on magnetohydrodynamic flow and heat transfer in a channel with porous walls of different permeability. The equations governing the flow are coupled non-linear partial differential equations. By introducing the stream function, the governing partial differential equations are reduced to ordinary differential equations. The governing equations which are coupled and highly non-linear are first linearized by quasi-linearization technique and obtained numerical solution by using implicit finite difference scheme. The effects of various parameters, namely, Reynolds number, permeability parameter, Hartmann number, Prandtl number, and thermal radiation parameter, entering into the problem. on the velocity field and temperature distribution are shown graphically.