Flow and heat transfer of hydromagnetic Oldroyd-B fluid in a channel with stretching walls

The present study investigates the heat transfer in an electrically conducting Oldroyd-B fluid through a channel with stretchingwalls in the presence of an applied magnetic field. The governing partial differential equations are reduced in a set of nonlinear ordinary differential equations using dimensionless variables. An implicit finite difference method is employed to develop a numerical solution at each spatial node for the governing nonlinear differential equations. The obtained results are analyzed and discussed graphically under the influence of controlling pertinent parameters.