The prediction on cooling and thermal enhancement in ternary-Boger hybrid nanofluid on a spinning sphere via finite element method

In this manuscript, ternary Boger nanofluid on porous spinning sphere in mass diffusion, heat energy and microorganisms is discussed. Base fluid is considered as diathermic oil, whereas ternary hybrid nanofluid contains aluminum oxide, MnZnFe2O4 and CoFe2O4. Ternary hybrid nanofluid has significant performance on the cooling process and thermal enhancement. The mechanism of Oxytactic microorganisms is used to determine wastewater treatment and engineering processes. The current model can be applied in applications of cooling of transformers, electronic systems, nuclear reactors, solar collectors and accelerates heat dissipation. The magnetic field is applied, thermo-phoresis and Brownian motion are used. Transfer of heat energy is experienced using the heat sink, viscous dissipation and Joule heating with convective boundary conditions. Various shapes (Sphere, Lamina, tetrahedron, column and hexahedron) of nanofluid are considered. The desired model in terms of ODEs is attained using transformations. The finite element method is used for numerical results. The cooling process can be achieved using a combination of SiC,Al2O3,Co3O4/diathermicoil with convection and enhanced thermal conductivity. Trihybrid nanofluid decreases the surface temperature and improves the cooling mechanism in applications of industrial cooling processes. Lamina and column shapes of nanofluid attain 21 % heat transfer rate, while sphere and tetrahedron shapes obtain 19 % which is greater than that of the hexahedron.