Thermal Performance of an Unsteady Exponential Moving Porous Fin Subject to the Flow of Hybrid Nanofluid

Abstract

In the current research, fin structures of various shapes, including rectangular profiles and exponentials with thin and thick tips have been taken into account. Here, it has been explored how the thermal performance in unsteady exponential moving porous fin structures is affected by the flow of hybrid nanofluid under convection and radiation circumstances. The hybrid nanofluid is composed of silver (Ag) and graphene (Gr) nanoparticles suspended in pure water as base fluid. In this study, in the place of volume concentration, the masses of the base fluid and the nanoparticles are taken into consideration by employing the Tiwari-Das nanofluid model. The governing partial differential equations (PDE) that are modeled have been nondimensionalized and further solved by using the finite difference method (FDM). The impact of dimensionless parameters on the thermal behavior of the rectangular and exponential fin structures has been demonstrated graphically. It is discovered that the thermal profile increases with time and achieves a stable state after a certain amount of time. Further, an exponential fin with a thick tip performs better than the other two profiles in the process of fin cooling. This study can be a useful analysis in the design of fin structures for practical applications.