Hybrid Nanofluid Flow of Non-Newtonian Casson Fluid for the Analysis of Entropy Through a Permeable Medium

Abstract

The magnetohydrodynamic (MHD) flow of an electrically conducting fluid through a rotating channel is used for the enhancement of heat transfer properties. The entropy analysis due to the irreversibility of the system for the non-Newtonian Casson hybrid nanofluid is proposed in this investigation. Ethylene glycol (EG) is considered as the base liquid in which the metal nanoparticle i.e., copper (Cu) and oxide like aluminium oxide (Al2O3) nanoparticles are submerged into it for the preparation of nanofluid. In addition, the implementation of radiative heat, viscous and Joule dissipation in the energy equation enhance the profile as well. The dimensionless for of the governing equations are obtained by using suitable similarity transformations. The solution is obtained numerically for both the primary and the secondary velocity distributions along with the temperature profiles and the physical significance of the pertinent parameters are presented via graphs. The simulated results for the rate coefficients at both the walls are presented in tabular form. Further, the irreversibility process for the thermal system i.e., the entropy analysis is carried out for the several parameters along with the Bejan number and deliberated clearly. Further, the important findings are; an increasing rotation retards the thickness of the bounding surface of the primary velocity near the lower wall however, significant augmentation in the shear rate as well as heat transfer rate is revealed for the augmenting magnetic and the rotation parameter.