Enhanced heat transfer in large-aperture PTSCs with semi-circular absorbers using multi-dipole magnetic field: A numerical study
This study investigates a large-aperture parabolic trough collector design featuring a half-cylindrical absorber tube, a planar radiation shield, and a glass cover. The components of the half-cylindrical absorber tube are a planar surface and a semi-circular surface. The multiple line dipoles magnet...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-07-01
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| Series: | Case Studies in Thermal Engineering |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214157X25005003 |
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| author | Yassine Bouazzi Ali B.M. Ali Galal A. Ahmed Alashaari Sultan Alsheherye Aboulbaba Eladeb Qasem Al Mdallal Lioua Kolsi |
| author_facet | Yassine Bouazzi Ali B.M. Ali Galal A. Ahmed Alashaari Sultan Alsheherye Aboulbaba Eladeb Qasem Al Mdallal Lioua Kolsi |
| author_sort | Yassine Bouazzi |
| collection | DOAJ |
| description | This study investigates a large-aperture parabolic trough collector design featuring a half-cylindrical absorber tube, a planar radiation shield, and a glass cover. The components of the half-cylindrical absorber tube are a planar surface and a semi-circular surface. The multiple line dipoles magnetic field is created by electrical current-carrying wires. Therminol®VP-1/Fe3O4 fluid is employed as the magnetic fluid. Response Surface Methodology (RSM) is utilized to correlate the Nusselt number and Darcy friction factor. Correlations indicate that the Reynolds number has a nonlinear effect on the friction factor. However, the magnetic flux density has a nonlinear effect on the Nusselt number. At Re = 16000, the multi-dipole magnetic field (B = 90 G, ϕ = 0.04) leads to the Nusselt number ratio, performance factor, Darcy friction factor ratio, and dimensionless maximum temperature of 2.14, 0.81, 2.64, and 1.49, respectively. While the nanofluid (ϕ = 0.04, B = 0) has a weaker performance, resulting in the corresponding values of 1.88, 0.78, 2.4, and 1.55. Also, the increase in magnetic flux density leads to an increase in the Nusselt number, Darcy friction factor, and performance factor. The non-uniform magnetic field disrupts the boundary layer, induces mixing within the ferrofluid, and elevates turbulent kinetic energy. |
| format | Article |
| id | doaj-art-0531ed19aa6341d89e060ea98e232255 |
| institution | DOAJ |
| issn | 2214-157X |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Thermal Engineering |
| spelling | doaj-art-0531ed19aa6341d89e060ea98e2322552025-08-20T03:18:37ZengElsevierCase Studies in Thermal Engineering2214-157X2025-07-017110624010.1016/j.csite.2025.106240Enhanced heat transfer in large-aperture PTSCs with semi-circular absorbers using multi-dipole magnetic field: A numerical studyYassine Bouazzi0Ali B.M. Ali1Galal A. Ahmed Alashaari2Sultan Alsheherye3Aboulbaba Eladeb4Qasem Al Mdallal5Lioua Kolsi6Department of Industrial Engineering, College of Engineering, University of Ha'il, Ha'il City, 81451, Saudi ArabiaAir Conditioning Engineering Department, College of Engineering, University of Warith Al-Anbiyaa, Karbala, IraqDepartment of Mathematics, College of Sciences & Humanities, Prince Sattam bin Abdulaziz University, Al-Kharj, 11942, Saudi ArabiaCollege of Engineering, Mechanical Engineering Department, King Khalid University, Abha, Saudi ArabiaDepartment of Chemical and Materials Engineering, College of Engineering, Northern Border University, Arar P.O. Box 1321, Saudi ArabiaDepartment of Mathematical Sciences, United Arab Emirates University, P.O. Box 15551, Al Ain, Abu Dhabi, United Arab Emirates; Corresponding author.Department of Mechanical Engineering, College of Engineering, University of Ha'il, Ha'il City, 81451, Saudi ArabiaThis study investigates a large-aperture parabolic trough collector design featuring a half-cylindrical absorber tube, a planar radiation shield, and a glass cover. The components of the half-cylindrical absorber tube are a planar surface and a semi-circular surface. The multiple line dipoles magnetic field is created by electrical current-carrying wires. Therminol®VP-1/Fe3O4 fluid is employed as the magnetic fluid. Response Surface Methodology (RSM) is utilized to correlate the Nusselt number and Darcy friction factor. Correlations indicate that the Reynolds number has a nonlinear effect on the friction factor. However, the magnetic flux density has a nonlinear effect on the Nusselt number. At Re = 16000, the multi-dipole magnetic field (B = 90 G, ϕ = 0.04) leads to the Nusselt number ratio, performance factor, Darcy friction factor ratio, and dimensionless maximum temperature of 2.14, 0.81, 2.64, and 1.49, respectively. While the nanofluid (ϕ = 0.04, B = 0) has a weaker performance, resulting in the corresponding values of 1.88, 0.78, 2.4, and 1.55. Also, the increase in magnetic flux density leads to an increase in the Nusselt number, Darcy friction factor, and performance factor. The non-uniform magnetic field disrupts the boundary layer, induces mixing within the ferrofluid, and elevates turbulent kinetic energy.http://www.sciencedirect.com/science/article/pii/S2214157X25005003Parabolic trough collectorMulti-dipole magnetic fieldHalf-cylindrical absorber tubeResponse surface methodology |
| spellingShingle | Yassine Bouazzi Ali B.M. Ali Galal A. Ahmed Alashaari Sultan Alsheherye Aboulbaba Eladeb Qasem Al Mdallal Lioua Kolsi Enhanced heat transfer in large-aperture PTSCs with semi-circular absorbers using multi-dipole magnetic field: A numerical study Case Studies in Thermal Engineering Parabolic trough collector Multi-dipole magnetic field Half-cylindrical absorber tube Response surface methodology |
| title | Enhanced heat transfer in large-aperture PTSCs with semi-circular absorbers using multi-dipole magnetic field: A numerical study |
| title_full | Enhanced heat transfer in large-aperture PTSCs with semi-circular absorbers using multi-dipole magnetic field: A numerical study |
| title_fullStr | Enhanced heat transfer in large-aperture PTSCs with semi-circular absorbers using multi-dipole magnetic field: A numerical study |
| title_full_unstemmed | Enhanced heat transfer in large-aperture PTSCs with semi-circular absorbers using multi-dipole magnetic field: A numerical study |
| title_short | Enhanced heat transfer in large-aperture PTSCs with semi-circular absorbers using multi-dipole magnetic field: A numerical study |
| title_sort | enhanced heat transfer in large aperture ptscs with semi circular absorbers using multi dipole magnetic field a numerical study |
| topic | Parabolic trough collector Multi-dipole magnetic field Half-cylindrical absorber tube Response surface methodology |
| url | http://www.sciencedirect.com/science/article/pii/S2214157X25005003 |
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