Present work investigates the effects of generalized Couette flow with
convective cooling, Navier slip and permeable walls on entropy generation in an
unsteady of water based nanofluids containing Copper (Cu) and Alumina (Al 2 O 3 ) as
nanoparticles. Both first and second laws of thermodynamics are applied to analyse
the problem. The nonlinear governing equations of momentum and energy are
solved numerically using a semi discretization finite difference method together with
Runge-Kutta Fehlberg integration scheme. Graphical results on the effects of
different parameter variations on velocity, temperature, skin friction, Nusselt
number, entropy generation rate, and Bejan number are presented and discussed.