Work

Simulation of conjugate free convection heat transfer of NEPCM/Al2O3-kerosene non-Newtonian hybrid nanoliquid between a double-pipe space

Year: 2025

Type: article

Abstract: In the current study, assessment of heat and mass transfer of NEPCM/Al2O3- Kerosene hybrid nanoliquid inside a double pipes space as a part of a heat exchanger is addressed. The mentioned synthesis can reflect Newtonian or non- Newtonian property following well-known Carreau model. After finding the governing equations including fluid flow continuity, momentum components and thermal (energy) in the fluid and the solid parts, they have been turned into their non- dimensional form. Next, the equations were formulated based on Galerkin finite element method. To ensure that the numerical code is qualified, it is compared with the results obtained in the other valid papers. The results have been configured in the forms of curves, contours and streamlines. In the meantime, Nusselt number has a determinative role in the current study. The findings express that the non- Newtonian hybrid nanoliquid by shear thinning property takes the lead in Nusselt number, about 42% against the Newtonian synthesis. Instead, a deterioration in the heat transfer rate by 9% against the Newtonian fluid is obtained via shear thickening hybrid nanoliquid.

Source: Case Studies in Thermal Engineering

DOI: 10.1016/j.csite.2025.106143