Thermal analysis of ferromagnetic nanofluid flow in a channel over a dimpled cavity

The water-based nanofluid analysis of a ferromagnetic fluid flow in a channel has been conducted over a dimpled cavity. The horizontal flat walls are assumed to be adiabatic, whereas the dimpled part and the inner rectangularfinned-shaped obstacle are heated. The system of Partial Differential Equations (PDEs) along with boundary conditions have been solved via Galerkin Weighted Residual Finite Element Method. To predict the streamlines isotherms, local and average Nusselt numbers, all the simulations are performed for various Reynold and Hartmann numbers. High Reynolds numbers, results in significant improvement in heat transfer at the dimpled surface. It is believed that such investigation might be helpful to make a base for finding the experimental results for mixed convection of ferromagnetic nanofluid problem over a dimpled cavity.

Automated summary

This study conducted a water-based nanofluid analysis on the flow of a ferromagnetic fluid in a channel with a dimpled cavity. The adiabatic horizontal flat walls were assumed, while the dimpled part and the inner rectangular finned-shaped obstacle were heated. The system of partial differential equations (PDEs) along with boundary conditions were solved using the Galerkin Weighted Residual Finite Element Method. Simulations were performed for various Reynold and Hartmann numbers to predict the streamlines, isotherms, local, and average Nusselt numbers. Higher Reynolds numbers led to a significant improvement in heat transfer at the dimpled surface. It is believed that this investigation could provide a basis for finding experimental results for the mixed convection of ferromagnetic nanofluid problem over a dimpled cavity.