Comparative heat transfer analysis of γ-Al2O3 −C2H6O2 and γ-Al2O3 −H2O electroconductive nanofluids in a saturated porous square cavity with Joule dissipation and heat source/sink effects

Thirumalaisamy, K, Sivaraj, R, Prasad, V, Beg, O ORCID: https://orcid.org/0000-0001-5925-6711, Leung, H, Kamalov, F and Vajravelu, K 2022, 'Comparative heat transfer analysis of γ-Al2O3 −C2H6O2 and γ-Al2O3 −H2O electroconductive nanofluids in a saturated porous square cavity with Joule dissipation and heat source/sink effects' , Physics of Fluids, 34 (7) .

[img]
Preview
PDF (Marker and cell finite difference simulation of hydromagnetic nanofluid fuel cell mixed convection with Joule dissipation) - Accepted Version
Download (2MB) | Preview
[img] PDF - Published Version
Restricted to Repository staff only until 1 July 2023.

Download (8MB) | Request a copy

Abstract

Inspired by the applications in electromagnetic nanomaterials processing in enclosures and hybrid fuel cell technologies, a mathematical model is presented to analyze the mixed convective flow of electrically conducting nanofluids (gamma-Al2O3-H2O and gamma-Al2O3-C2H6O2) inside a square enclosure saturated with porous medium under an inclined magnetic field. The Tiwari-Das model, along with the viscosity, thermal conductivity, and effective Prandtl number correlations are considered in this study. The impacts of Joule heating, viscous dissipation, and internal heat absorption/generation are taken into consideration. Strongly nonlinear conservation equations which govern the heat transfer and momentum inside the cavity with associated initial and boundary conditions are rendered dimensionless with appropriate transformations. The Marker-And-Cell (MAC) technique is deployed to solve the non-dimensional initial-boundary value problem. Validations with previous study are included. A detailed parametric study is carried out to evaluate the influences of the emerging parameters on the transport phenomena. When 5% gamma-Al2O3 nanoparticles are suspended into H2O base-fluid, the average heat transfer rate of gamma-Al2O3-H2O nanoliquid is increased by 25.63% compared with the case where nanoparticles are absent. When 5% gamma-Al2O3 nanoparticles are suspended into C2H6O2 base-fluid, the average heat transfer rate of gamma-Al2O3-C2H6O2 nanofluid is increased by 43.20% compared with the case where nanoparticles are absent. Further, when heat source is present, the average heat transfer rate of gamma-Al2O3-C2H6O2 nanofluid is 194.92% higher than that in the case of gamma-Al2O3-H2O nanofluid.

Item Type: Article
Schools: Schools > School of Computing, Science and Engineering
Journal or Publication Title: Physics of Fluids
Publisher: American Institute of Physics
ISSN: 1070-6631
Depositing User: OA Beg
Date Deposited: 13 Jul 2022 07:27
Last Modified: 17 Aug 2022 08:47
URI: http://usir.salford.ac.uk/id/eprint/64156

Actions (login required)

Edit record (repository staff only) Edit record (repository staff only)

Downloads

Downloads per month over past year