Relevance of various cavity aspect ratios to the thermal behavior of natural convection heat transfer for water-based hybrid nanofluid within a U-shaped enclosure

Asmadi, M. Solleh and Md. Kasmani, Ruhaila and Siri, Zailan and Saleh, Habibis and Mt Aznam, Suazlan (2023) Relevance of various cavity aspect ratios to the thermal behavior of natural convection heat transfer for water-based hybrid nanofluid within a U-shaped enclosure. In: 14. International Conference on Computational Heat and Mass Transfer, 4-8 September 2023, Düsseldorf, Germany. (Unpublished)

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Abstract

The investigation of the effect of the U-shaped cavity aspect ratio on the natural convection heat transfer of copper-alumina/pure water hybrid nanofluid is presented in the manuscript. Various aspect ratio of the enclosure is examined with fixed parameters to observe their effect on the overall thermal performance within the cavity. The dimensionless governing equations are formed, together with the thermophysical properties of hybrid nanofluid which are coupled and solved using the Galerkin weighted residuals finite element method bounded by the boundary conditions. A damped Newton-Raphson algorithm is employed as the convergence criterion to the hon-linear governing equations. Numerical and experimental comparisons between the present numerical results and previously published findings are conducted to ensure the solution's validity. An independent mesh test is done to ascertain the solution's independence from the meshing formation. The results are presented in the form of graphs, streamlines, and isotherms to see the effect of various parameters such as nanoparticle volume fraction and its ratios, Rayleigh number, and enclosure aspect ratios, and the discussion on the results is extensively presented. The present investigation is novel in terms of one heating wall instead of three heating walls in the previously published papers. It is hoped the findings in this manuscript will benefit heat transfer management in industries such as laptop and smartphone manufacturing.

Item Type:	Conference or Workshop Item (Slide Presentation)
Uncontrolled Keywords:	Natural convection, hybrid nanofluid, aspect ratio, U-shaped cavity, finite element, numerical computation
Subjects:	Q Science > QA Mathematics > QA297 Numerical Analysis Q Science > QA Mathematics > QA76 Computer software T Technology > TJ Mechanical engineering and machinery T Technology > TJ Mechanical engineering and machinery > TJ163.26 Energy conservation
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering > Department of Manufacturing and Materials Engineering
Depositing User:	Dr. Suazlan Mt Aznam
Date Deposited:	23 Oct 2023 11:34
Last Modified:	23 Oct 2023 11:34
URI:	http://irep.iium.edu.my/id/eprint/107589

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