Investigation of magneto-convection characteristics in a sudden expanding channel with convex surface geometry under thermally developing flow conditions
International Journal of Numerical Methods for Heat & Fluid Flow
ISSN: 0961-5539
Article publication date: 25 March 2024
Abstract
Purpose
The purpose of this study is to analyse the magnetic field effect on Fe3O4/H2O Ferrofluid flowing in a sudden expansion tube, which has specific behaviour in terms of rheology, with convex dimple fins. Because the investigation of flow separation is a prominent application in performance, the effect of magnetic field and convex dimple on the thermo-hydraulic performance of sudden expansion tube are examined, in detail.
Design/methodology/approach
During the solution of the boundary conditions of the sudden expansion tube, finite volume method was used. Analyses have been conducted considering the single-phase solution, steady-state, incompressible fluid and no-slip condition of the wall under forced convection conditions. In the analyses, it has been assumed that the flow was developing thermally and has been fully developed hydrodynamically.
Findings
The present study focuses on exploring the influence of the magnetic field, nanofluid concentration and convex dimple fins on the thermo-hydraulic performance of sudden expansion tube. The results indicate that the strength of the magnetic field, nanofluid concentration and convex dimple fins have a positive effect on the convective heat transfer in the system.
Originality/value
The authors conducted numerical studies, determining through a literature search that no one had yet investigated enhancing heat transfer on a sudden expansion tube using combinations of magnetic fields, nanofluids and convex dimple fins. The results of the numerical analyses provide valuable information about the improvement of heat transfer and system performance in electronic device cooling and heat exchangers.
Keywords
Acknowledgements
This study was previously published as a preprint by Research Square via the link https://doi.org/10.21203/rs.3.rs-3449356/v1. The authors thank Research Square for their contribution. Research Square has granted legal rights to this preprint work as a CC BY 4.0 License, allowing you to freely revise, republish and enhance the study. Additionally, the statement is included the Research Square's regulations (www.researchsquare.com/legal/editorial) state “Our policies do not currently prevent publication of submissions whose titles match preprints submitted to other servers.”
Funding: This study has been supported by TÜBİTAK BİDEB-2211/C fellowship in the scope of this study.
Citation
Gürsoy, E., Pazarlioğlu, H.K., Gürdal, M., Gedik, E., Arslan, K. and Dağdeviren, A. (2024), "Investigation of magneto-convection characteristics in a sudden expanding channel with convex surface geometry under thermally developing flow conditions", International Journal of Numerical Methods for Heat & Fluid Flow, Vol. ahead-of-print No. ahead-of-print. https://doi.org/10.1108/HFF-11-2023-0703
Publisher
:Emerald Publishing Limited
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