Thermal efficiency and stability of copper-alumina nanoparticles with Darcy-Forchheimer effects

Abstract
The main objective of the current study is to find dual branches with stability analysis of two-dimensional (2D) flow and heat transport of Cu−Al2O3/ water-based hybrid nanofluid on a linear shrinking/stretching sheet with effects of the thermal radiation and convective condition. The effect of Darcy-Forchheimer has also been considered. A permeable surface is referred to sustain a shrinking flow by a sufficient mass suction of the wall. The system of governing boundary layer partial differential equations (PDEs) is transformed into ODEs by employing similarity transformation. The bvp4c solver is used as a numerical computing tool in the MATLAB software to solve the resultant ODEs and the outcomes are offered in graphs and tables. Our computational results revealed dual branches of solutions possessed by the shrinking parameter λ i.e. λ<0. The increment number of copper volume fraction can increase the range of two branches, while the thermal radiation and Biot parameters have zero effect on delaying the separation of boundary layers along with porosity and inertia parameters. Increased suction and Biot parameters can raise the rate of heat transfer while the opposite effect is achieved by enhancing the magnitude of ϕCu.

Author
Rebwar Nasir Dara

DOI
https://doi.org/10.1080/17455030.2022.2055812

Publisher
Waves in Random and Complex Media

ISSN
17455049

Publish Date: