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https://hdl.handle.net/11147/13597
Title: | Investigation of external magnetic field effect on the performance of ferrofluid-based single-phase natural circulation loops | Authors: | Bozkır, Selim Can Çobanoğlu, Nur Doğanay, Serkan Karadeniz, Ziya Haktan Elçioğlu, Elif Begüm Turgut, Alpaslan |
Keywords: | Ferrofluids External magnetic field Numerical simulation Mixed convection |
Publisher: | Elsevier | Abstract: | The goal of this study is to investigate the performance of a Single-Phase Natural Circulation mini Loop (SPNCmL) operating under the influence of an external magnetic field (EMF). For this purpose, a numerical SPNCmL model working with Fe3O4 ferrofluids (1-3 vol%.) under the influence of an EMF is developed to reflect the effect of a NdFeB permanent magnet with a remanence of 1.22 T located at the outlet of the cooler-end for the magnetic field generation. System characteristics such as temperature difference at heater-end (& UDelta;Theater) and maximum temperature (Tmax) and performance in terms of effectiveness (& epsilon;) are investigated. In addition, the effect of EMF on boundary layer energy transport along the cooler-end is evaluated in terms of the change in the local Nusselt number. Applying an EMF dramatically affects the system performance in terms of an increase in & UDelta;Theater and & epsilon;, respectively up to 34% and 25% compared to those with water. Tmax values are obtained by up to 9% higher for Fe3O4 ferrofluids compared to water, while applying EMF results in an increment in Tmax by up to 5%. Improved heat transfer performance by employing EMF at the cooler-end outlet of the SPNCmLs emphasizes their potential in cooling applications. | URI: | https://doi.org/10.1016/j.tsep.2023.101921 https://hdl.handle.net/11147/13597 |
ISSN: | 2451-9049 |
Appears in Collections: | Energy Systems Engineering / Enerji Sistemleri Mühendisliği Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection |
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1-s2.0-S2451904923002743-main.pdf Until 2025-01-01 | 6.39 MB | Adobe PDF | View/Open Request a copy |
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