Abstract
Abstract In this paper the effects of thermophoresis on an unsteady magnetohydrodynamic (MHD) forced convective heat and mass transfer flow of viscous, incompressible and electrically conducting fluid over a wedge with variable electric conductivity have been investigated. The potential flow velocity has been taken as a function of the distance x and time t. The governing time dependent non-linear partial differential equations are transferred into locally similar ordinary differential equations and solve numerically by applying Nachtsheim- Swigert shooting iteration technique along with sixth order Runge-Kutta integration scheme. Steady solutions are compared with previously published works which show excellent agreement. The local similarity solutions for unsteady case are presented graphically for the velocity, temperature and concentration profiles in the boundary layer. The results show that skin friction coefficient, Nusselt number and Sherwood number are higher for the fluids of constant electric conductivity than those of the variable electric conductivity.
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