| Title: | Euler–Euler numerical model for transport phenomena modeling in a natural circulation loop operated by nanofluids |
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| Authors: | ID Kamenik, Blaž (Author)
ID Vovk, Nejc (Author)
ID Elcioglu, Elif Begum (Author)
ID Sezgin, Firat (Author)
ID Ozyurt, Erdem (Author)
ID Karadeniz, Ziya Haktan (Author)
ID Turgut, Alpaslan (Author)
ID Ravnik, Jure (Author) |
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| Files: |  s10765-024-03497-y.pdf (2,88 MB)
MD5: 6465228F3F79C3D429854DDA4AC3A3CE
 https://link.springer.com/article/10.1007/s10765-024-03497-y
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| Language: | English |
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| Work type: | Article |
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| Typology: | 1.01 - Original Scientific Article |
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| Organization: | FS - Faculty of Mechanical Engineering
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| Abstract: | This paper explores a computational approach to model multiphase heat transfer and fuid fow in a natural circulation loop utilizing nanofuids. We propose and implement an Euler–Euler framework in a CFD environment, incorporating an innovative boundary condition to preserve mass conservation during thermophoretic particle fux. The model’s accuracy is verifed through a one-dimensional example, by comparing results against both an Euler–Lagrange model and an in-house fnite volume solution. Experimental validation is conducted with aluminum oxide nanofuids at varying nanoparticle concentrations. We prepared the nanofuids and measured their thermophysical properties up to 60◦C. We assess the thermal performance of the nanofuid in natural circulation loop at diferent heating powers via experiment and numerical simulations. The fndings reveal that the heat transfer enhancement ofered by the nanofuid is modest, with minimal diferences observed between the proposed Euler–Euler approach and a simpler single-phase model. The results underscore that while the Euler–Euler model ofers detailed particle–fuid interactions, its practical thermal advantage is limited in this context. |
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| Keywords: | CFD · Euler–Euler, multiphase fow, nanofluid, natural circulation loop, thermophoresis |
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| Publication status: | Published |
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| Publication version: | Version of Record |
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| Submitted for review: | 19.11.2024 |
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| Article acceptance date: | 21.12.2024 |
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| Publication date: | 08.02.2025 |
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| Publisher: | Springer |
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| Year of publishing: | 2025 |
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| Number of pages: | 28 str. |
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| Numbering: | Vol. 46 |
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| PID: | 20.500.12556/DKUM-92031  |
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| UDC: | 620.3 |
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| ISSN on article: | 1572-9567 |
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| COBISS.SI-ID: | 228707843 |
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| DOI: | 10.1007/s10765-024-03497-y |
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| Copyright: | © The Author(s) 2025 |
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| Publication date in DKUM: | 12.03.2025 |
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| Views: | 174 |
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| Downloads: | 10 |
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| Metadata: |    |
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| Categories: | Misc.
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