Irreversibility Analysis of MHD Mixed Convection Channel Flow of Nanofluid with Suction and Injection

The inherent irreversibility in hydromagnetic mixed convection channel flow of Cu-water nanofluid in the presence of suction and injection at the walls. In addition, the entropy production decreased at the permeable walls but increased at the channel core region with a rise in magnetic field intensity. Investigated theoretically based on first and second laws of thermodynamics. The model equations of momentum and energy balance are obtained and tackled numerically using a shooting technique coupled with a fourth order Runge-Kutta-Fehlberg integration scheme. The results obtained for the velocity and temperature profiles are utilised to determine the skin friction, Nusselt number, entropy generation rate and Bejan number. The results reveal that the enhancement of the Nusselt number due to presence of Cu-nanoparticles increases the magnitude of entropy generation and Bejan number. In addition, the entropy production is decreased at the permeable walls but increased at the channel core region with a rise in magnetic field intensity.

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