Semi-analytical and numerical explorations on entropy optimization of EMHD in Casson hybrid nanofluid with radiation slip and convective boundary conditions

Abstract

TheTheoretical study of 3D electro magnetohydrodynamic boundary layer steady flow of a Casson fluid across a rotating disk in the presence of velocity slip, porous medium and thermal radiation is indeed the subject of this article. Engine oil with (Copper–Zirconium dioxide) hybrid nanoparticles takes up the fluid in the containment. The nonlinear differential systems are transformed into ordinary differential systems using a suitable self-similarity variable, which are obtained using the Runge–Kutta scheme. When compared to the numerical method, the HPM yields a more precise and dependable conclusion than the Runge–Kutta method. With new parameters, Casson fluid velocity, temperature, entropy production rate, bejan number, skin friction factor and rate of heat transfer are explored and the findings are graphically shown for two different fluid cases that is Newtonian and non-Newtonian. The entropy generation increases for greater values of the electric field parameter, Brinkman number and temperature ratio parameters. Hybrid nanoparticles play a significant role in Power transmission lines, the Automobile industry, fuel cell membranes, and joint implants.