keywords: Newtonian fluid, mixed convection, heat transfer, heat absorption, Darcian
The present paper deals with the study of a mixed convective flow of Newtonian, incompressible, viscous fluid past a porous vertical plate embedded in heat absorbing Darcian porous media in presence of viscous dissipation and thermal radiation. A system of non-linear, coupled partial differential equations has been developed based on the basic conservation principles of physics such as conservation of mass, conservation of momentum and conservation of energy. Multi – parameter regular perturbation technique has been used to solve the governed system of equations subject to a set of favourable boundary conditions. The exact closed form of solutions for the velocity, temperature as well as skin – friction and Nusselt number have been obtained in terms of some governed physical parameters. Numerical simulations in terms of graphs and table have been made to investigate the effects of pertinent parameters. It is observed that, an increase in Reynolds number decreases the temperature as well as the velocity while the presence of Reynolds number increases the Nusselt number as well as skin- friction. Again the fluid velocity and temperature are found to increase due to increase in Eckert number but a reversed effect has observed in case of Nusselt number and skin – friction.
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