Effects of navier slip on entropy generation in a porous channel with suction/injection

Abstract

In this paper, we investigate the combined effects of suction/injection and asymmetric Navier slips on the entropy generation rate in a steady flow of an incompressible viscous fluid through a porous channel subjected to non-uniform temperature at the walls. The nonlinear model problem is tackled numerically using shooting quadrature. Both the velocity and temperature profiles are obtained and utilized to compute the entropy generation number. The effects of slip parameter, Brinkmann number, the Peclet number and suction/injection Reynolds number on the fluid velocity, temperature profile, skin friction, Nusselt number, entropy generation rate and Bejan number are depicted graphically and discussed quantitatively. © 2012 by JSME.