Asmadi, M. S. and Kasmani, R. Md and Siri, Z. and Saleh, H. and Aznam, S. Mt (2024) 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: Advances in Computational Heat and Mass Transfer, ICCHMT 2023, Vol 2, 4-8 September 2024, Dusseldorf, GERMANY.
Full text not available from this repository.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 ratios of the enclosure are 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 momentum and energy boundary conditions. A damped Newton-Raphson algorithm is employed as the convergence criterion for the non-linear governing equations. Numerical and experimental comparisons between the present numerical results and previously published findings are conducted to ensure the solution's validity. The results are presented 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, which is closer to modeling real-world situations, where a top-bottom heating and cooling solution is preferable. It is found that hybrid nanofluid produces a better thermal enhancement solution compared to pure water as high as 10%, and a smaller lid width will restrict the heat transfer rate. It is hoped the findings in this manuscript will benefit heat transfer management in industries such as laptop and smartphone manufacturing. In turn, more sustainable energy management can be achieved.
| Item Type: | Conference or Workshop Item (Paper) |
|---|---|
| Funders: | Ministry of Higher Education (MOHE) Malaysia (FRGS/1/2020/STG06/UM/02/6) |
| Additional Information: | 14th International Conference on Computational Heat and Mass Transfer (ICCHMT), Dusseldorf, GERMANY, SEP 04-08, 2024 |
| Uncontrolled Keywords: | Natural convection; hybrid nanofluid; aspect ratio; U-shaped cavity; finite element; numerical computation |
| Subjects: | Q Science > QA Mathematics |
| Divisions: | Faculty of Science > Institute of Mathematical Sciences |
| Depositing User: | Ms. Juhaida Abd Rahim |
| Date Deposited: | 20 Jan 2025 03:38 |
| Last Modified: | 20 Jan 2025 03:38 |
| URI: | http://eprints.um.edu.my/id/eprint/47631 |
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