Repercussions of homogeneous and heterogeneous reactions of 3D flow of Cu-water and AL2O3-water nanofluid and entropy generation estimation along stretching cylinder

This research article is aimed to investigate the behavior of 3D flow of nanofluid comprising of copper and aluminium oxide nanoparticles i.e. the importance of the solid particle to increase the thermal conductivity of nanofluid. The results confirm a high uptake of Cu-water nanofluid and Al2O3-water nanofluid compared to no, or low, uptake of the soluble nanomaterial. This article addresses incompressible viscous Cu-water and Al2O3-water nanofluid flow along a stretching cylinder. Influence of homogeneous and heterogeneous reactions are examined for the nanofluid. An encounter of entropy generation is also taken into account. The entire phenomena is considered for water as base fluid comprising nanoparticles (Copper and Aluminium Oxide). The equations obtained concerning the flow are being transformed using suitable transformations. The results are being evaluated numerically for the obtained equations. Graphical behavior of velocity, temperature, concentration and entropy generation is analyzed to perceive effect of diverse parameters. It is found that the larger values of curvature parameter and nanoparticle volume fraction enhances the velocity profile while the temperature profile decreases. The concentration at the surface decrease with the strength of the heterogeneous reaction parameter while show opposite trend for homogeneous reaction and Schmidt number. Entropy generation shows an enhancing trend for the curvature parameter, Eckert and Prandtl number while contradictory trend for temperature difference ratio parameter. Skin friction and Nusselt number are being examined through numerical values obtained. (C) 2021 THE AUTHORS. Published by Elsevier BV on behalf of Faculty of Engineering, Ain Shams University.

Automated summary

This research investigates the behavior of 3D flow of nanofluid consisting of copper and aluminium oxide nanoparticles and emphasizes the significance of solid particles in enhancing the thermal conductivity of nanofluid. The study confirms a higher uptake of Cu-water and Al2O3-water nanofluids compared to soluble nanomaterials. The research examines incompressible viscous nanofluid flow and explores the influence of homogeneous and heterogeneous reactions, as well as entropy generation. The findings suggest that the curvature parameter and nanoparticle volume fraction have a positive correlation with velocity profile but a negative correlation with temperature profile.