Natural Convective Heat Transfer Analysis of Electrically Conducting Hybrid Nanofluid in a Small Gap Between Rotating Cone and Disc.

In this research, we examine four models—a rotating cone with a stationary disc, a stationary cone with a revolving disc, a co-rotating cone-disc, and a counter-rotating cone-disc—to determine the role of magnetohydrodynamic (MHD) natural convective flow of hybrid nanofluid and heat transfer in a small gap between cone and disc. An amalgamation of two nanoparticles magnesium oxide M g O and copper oxide C u O is used in water H 2 O . The computations of the proposed model were limited to Reynolds number 12 with a corresponding conical angle at α = 4 ∘ . The temperature of a disc surface varies radially. An innovative aspect of the proposed framework is the convective flow of radiative hybrid nanofluid in the presence of buoyancy force and magnetic field. The governing three-dimensional momentum and energy equations are solved for velocity and temperature fields using befitting similarity transformations. The bvp4c technique has been applied. Graphs demonstrate the effect of dimensionless parameters on flow characteristics. Heat transfer rates are calculated at both the cone and disc surfaces for all four models and found that the co-rotation model produces a higher heat transfer rate at the cone surface. The proposed model has characteristics in solar thermal systems, electronics cooling, energy storage, biomedical, and waste heat recovery. This study has been validated with prior research. [ABSTRACT FROM AUTHOR]