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Volume 12, Issue 1 (Spring 2025) |
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Numerical investigation of the effect of using different ferrofluids under the effect of magnetic dipoles with different strengths on heat transfer and pressure drop in a two-dimensional channel
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Mahziyar Ghaedi1   , Hamid-Reza Bahrami *2 |
1- Department of Mechanical Engineering, Faculty of Technical Engineering, Qom University of Technology, Qom, Iran
2- Department of Mechanical Engineering, Faculty of Technical Engineering, Qom University of Technology, Qom, Iran , h_tbahrami@yahoo.com |
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Abstract: (18 Views) |
In the present study, using finite volume-based software, the effect of employing two dipoles with different strengths and commercially manufactured ferrofluids was modeled. The ferrofluids, with varying nanoparticle volume fractions and magnetic properties, flow through a channel. By applying a non-uniform magnetic field generated by one or two dipoles of different strengths, heat transfer characteristics and pressure drop within the microchannel are altered. The results indicate that the use of ferrofluids with different magnetic properties and the positioning of the dipoles have a direct impact on the heat transfer rate and pressure drop, as reflected by parameters such as the average and minimum Nusselt numbers. An increase in the volume fraction of magnetic nanoparticles in the base fluid (water) enhances the heat transfer rate. According to the results, when a non-uniform magnetic field generated by the magnetic dipole is applied, the AMG 700 ferrofluid achieves the highest average Nusselt number (10.47), while the AMG 308 ferrofluid shows the lowest average Nusselt number (9.9). Additionally, the highest and lowest imposed pressure drops in the internal flow correspond to AMG 700 (16.9 Pa) and AMG 308 (4.61 Pa), respectively. |
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| Keywords: Ferrofluid, Nusselt Number, Magnetic Dipoles, Two Dimensional Channel, Heat Transfer |
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Full-Text [PDF 1772 kb]
(10 Downloads)
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Type of Study: Research |
Subject:
Heat and Mass Transfer
Received: 2025/02/11 | Accepted: 2025/05/18 | Published: 2025/05/31
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Ghaedi M, Bahrami H. Numerical investigation of the effect of using different ferrofluids under the effect of magnetic dipoles with different strengths on heat transfer and pressure drop in a two-dimensional channel. تبدیل انرژی 2025; 12 (1) :43-65 URL: http://jeed.dezful.iau.ir/article-1-535-en.html
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