A physical depiction of a semi-spherical fin unsteady heat transfer and thermal analysis of a fully wetted convective-radiative semi-spherical fin

The current investigation scrutinizes non-Fourier heat conduction law to describe transient temperature variation through a convective-radiative wetted semi-spherical fin with internal heating. The fin is fully wetted with a hybrid nanofluid containing MnZnFe2O4 - NiZnFe2O4 nanoparticles and water or methanol (methyl alcohol (MA)) as base liquids. Dimensionless terms are used to nondimensionalize the energy equation, and the finite difference method (FDM) is used to solve the nonlinear partial differential equation (PDE). In addition, graphs are drawn to explore the impact of several non-dimensional attributes on the temperature gradient, such as radiation-conduction, convection-conduction, and internal heat production parameters for hybrid nanofluid containing MnZnFe2O4 and NiZnFe2O4 nanoparticles with different base liquids. The major findings of the study show that as the magnitude of the wet parameter, and radiation-conduction parameters increases, the transient thermal distribution through the fin drops. Thermal distribution, on the other hand, improves for the parameter of heat generation.