Second law analysis for radiative MHD slip flow of a nanouid over a stretching sheet with non-uniform heat source effect

Abstract

The application of second law of thermodynamics to an electrically conducting incompressible nanouid slip flow over a stretching sheet is investigated in the presence of thermal radiation and non-uniform heat source/sink, both analytically and numerically. The governing dimensionless equations for this investigation are solved analytically by hypergeometric function and numerically by using Runge-Kutta-Gill method with shooting technique. The effects of magnetic parameter, nanosolid volume fraction parameter, slip parameter, and suction parameter on velocity profile are discussed for Ag nanoparticles. Further, in addition to these parameters, the effects of radiation parameter and non-uniform heat source/sink parameters on temperature profile and entropy generation number are also discussed. Finally, the results of these profiles of Ag nanoparticles are compared with those of the Cu, Al2O3, and TiO2 nanoparticles. It is inferred that the effect of slip and non-uniform heat source parameters decrease the entropy generation. The metallic nanoparticles create more entropy than the non-metallic nanoparticles.