Abdelrazek, Ali H. and Alawi, Omer A. and Mat Ali, Mohamed Sukri and Zaki, Sheikh Ahmad and Ahmed, Khaled I. and Kazi, S. N. (2024) Thermal performance assessment of alumina/graphene oxide hybrid nanofluid in annular passage of multiple configurations. Journal of Thermal Analysis and Calorimetry, 149 (5). pp. 2463-2479. ISSN 1388-6150, DOI https://doi.org/10.1007/s10973-023-12821-x.
Full text not available from this repository.Abstract
The current study investigated the effect of both the intrinsic and extrinsic parameters of annular flow on the thermal performance of alumina/graphene oxide (Al2O3/GO) for fully developed turbulent flow by A 3-D CFD model. A fully circular annular pipe (the cross-section is a full circle for both the outer pipe and inner rod) and an annular pipe with a diamond-shaped inner rod were considered in the study. An aqua-based hybrid nanofluid containing Al2O3: GO nanocomposite of 80%: 20% mass mixing ratio, respectively, was tested in comparison with the distilled water (DW) as a heat transfer fluid in both annular passages. The hybrid nanofluid of volumetric concentrations 0.1%, 0.3%, 0.5%, and 0.75% was selected from a published work, and its density and specific heat were calculated theoretically by the current research. The effect of heating location on thermal performance was investigated by alternating a uniform heat flux boundary at the inner rod and outer pipe. The CFD model was verified experimentally using a DW run experiment with a fully circular annular pipe with inner heating under a Reynolds number range between 3000 and 8500. The results generally concluded that the annular pipe with a diamond-shaped inner rod has a higher shape performance index than the fully circular annular pipe, and the inner heating has a higher heat transfer coefficient than that of the outer heating for all nanofluid concentrations in both pipe configurations.
| Item Type: | Article |
|---|---|
| Funders: | Malaysia Japan International Institute of Technology, Universiti Teknologi Malaysia (R.K130000.7113.06E34), Universiti Teknologi Malaysia (UTM), Fundamental Research Grant Scheme (FRGS/1/2019/TK03/UM/02/12 (FP143-2019A)), Ministry of Education, Malaysia |
| Uncontrolled Keywords: | Annular flow; Hybrid nanofluid; Graphene oxide; CFD modeling, annulus configurations; Turbulent flow |
| Subjects: | T Technology > TJ Mechanical engineering and machinery |
| Divisions: | Faculty of Engineering > Department of Mechanical Engineering |
| Depositing User: | Ms. Juhaida Abd Rahim |
| Date Deposited: | 07 Nov 2024 04:15 |
| Last Modified: | 07 Nov 2024 04:15 |
| URI: | http://eprints.um.edu.my/id/eprint/45659 |
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