Entropy generation of a radiative hydromagnetic Powell-Eyring chemical reaction nanofluid with variable conductivity and electric field loading

Abstract

The study examines the thermodynamic second law of a Powell-Eyring chemical reaction nanofluid flow with electric field loading and variable heat dependent electrical conductivity. The non-Newtonian radiative flow liquid is induced by electric and magnetic fields. The Powell-Erying Cauchy non-Newtonian model is employed for the viscoelastic effect. With suitable transformations, the modeled equations are successfully solved numerically. The results are plotted to investigate the influences of some emerging terms on the concentration, temperature, momentum, Bejan number and entropy generation. It is revealed from the study that entropy generation is minimized as the radiation, electric field loading and magnetic parameters are increased. Also, to avoid blowing up in the technology and industrial engines, the electric field loading as a current carrying hydromagnetic fluid needs to be encouraged for effective operations and performance of engineering and industrial machines. Keywords: Irreversibility, Viscous heating, Non-Newtonian, Bejan number, Electric field