Investigation of Nanofluid Natural Convection Heat Transfer in Open Ended L-shaped Cavities utilizing LBM
In this paper, laminar natural convection of copper/water nanofluid in an open-ended L-shaped cavity is investigated by Lattice Boltzmann Model (LBM). The results are compared by previous studies that are in good agreement. Influences of Rayleigh number (Ra = 103, 104, 105, 106), cavity aspect ratio...
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| Format: | Article |
| Language: | English |
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Shahid Chamran University of Ahvaz
2021-10-01
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| Series: | Journal of Applied and Computational Mechanics |
| Subjects: | |
| Online Access: | https://jacm.scu.ac.ir/article_15620_a20754c609932e2c75cf10fd9b4ee81c.pdf |
| _version_ | 1818015999599837184 |
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| author | Hasan Mohammadifar Hasan Sajjadi Mohammadi Rahnama Saeed Jafari Yan Wang |
| author_facet | Hasan Mohammadifar Hasan Sajjadi Mohammadi Rahnama Saeed Jafari Yan Wang |
| author_sort | Hasan Mohammadifar |
| collection | DOAJ |
| description | In this paper, laminar natural convection of copper/water nanofluid in an open-ended L-shaped cavity is investigated by Lattice Boltzmann Model (LBM). The results are compared by previous studies that are in good agreement. Influences of Rayleigh number (Ra = 103, 104, 105, 106), cavity aspect ratio (AR = 0.2, 0.4, 0.6) and volume concentration of Cu nanoparticles (0 ≤ Φ ≤ 0.1) on the momentum, thermal fields and heat transfer in the enclosure are studied. Also, the effect of changing the boundary conditions, on the heat transfer rate has been investigated. It is observed that maximum heat transfer enhancement by adding the nanoparticles for Ra = 106 with AR = 0.4 (32.76%) occurs. Results illustrate that increasing the cavity aspect ratio decreases heat transfer rate for Ra = 103 and Ra = 104. The least and most heat transfer rate for Ra = 105 occurs in enclosures by aspect ratios of 0.2 and 0.4 respectively, while it was observed at Ra = 106 for minimum and maximum rate of heat transfer the opposite behavior that at Ra = 105 occurs. |
| first_indexed | 2024-04-14T07:07:11Z |
| format | Article |
| id | doaj.art-6da97ecd5e0f497393feb7e569aefc39 |
| institution | Directory Open Access Journal |
| issn | 2383-4536 |
| language | English |
| last_indexed | 2024-04-14T07:07:11Z |
| publishDate | 2021-10-01 |
| publisher | Shahid Chamran University of Ahvaz |
| record_format | Article |
| series | Journal of Applied and Computational Mechanics |
| spelling | doaj.art-6da97ecd5e0f497393feb7e569aefc392022-12-22T02:06:33ZengShahid Chamran University of AhvazJournal of Applied and Computational Mechanics2383-45362021-10-01742064208310.22055/jacm.2020.33495.223515620Investigation of Nanofluid Natural Convection Heat Transfer in Open Ended L-shaped Cavities utilizing LBMHasan Mohammadifar0Hasan Sajjadi1Mohammadi Rahnama2Saeed Jafari3Yan Wang4Department of Mechanical Engineering, Shahid Bahonar University of Kerman, Kerman, P.O. Box 76175-133, IranDepartment of Mechanical Engineering, University of Bojnord, Bojnord, P.C. 945 3155111, IranDepartment of Mechanical Engineering, Shahid Bahonar University of Kerman, Kerman, P.O. Box 76175-133, IranDepartment of Mechanical Engineering, Shahid Bahonar University of Kerman, Kerman, P.O. Box 76175-133, IranDepartment of Aerodynamics, Nanjing University of Aeronautics and Astronautics, Nanjing, ChinaIn this paper, laminar natural convection of copper/water nanofluid in an open-ended L-shaped cavity is investigated by Lattice Boltzmann Model (LBM). The results are compared by previous studies that are in good agreement. Influences of Rayleigh number (Ra = 103, 104, 105, 106), cavity aspect ratio (AR = 0.2, 0.4, 0.6) and volume concentration of Cu nanoparticles (0 ≤ Φ ≤ 0.1) on the momentum, thermal fields and heat transfer in the enclosure are studied. Also, the effect of changing the boundary conditions, on the heat transfer rate has been investigated. It is observed that maximum heat transfer enhancement by adding the nanoparticles for Ra = 106 with AR = 0.4 (32.76%) occurs. Results illustrate that increasing the cavity aspect ratio decreases heat transfer rate for Ra = 103 and Ra = 104. The least and most heat transfer rate for Ra = 105 occurs in enclosures by aspect ratios of 0.2 and 0.4 respectively, while it was observed at Ra = 106 for minimum and maximum rate of heat transfer the opposite behavior that at Ra = 105 occurs.https://jacm.scu.ac.ir/article_15620_a20754c609932e2c75cf10fd9b4ee81c.pdflattice boltzmann methodnatural convectionnanofluidopen-ended l-shaped cavityaspect ratio |
| spellingShingle | Hasan Mohammadifar Hasan Sajjadi Mohammadi Rahnama Saeed Jafari Yan Wang Investigation of Nanofluid Natural Convection Heat Transfer in Open Ended L-shaped Cavities utilizing LBM Journal of Applied and Computational Mechanics lattice boltzmann method natural convection nanofluid open-ended l-shaped cavity aspect ratio |
| title | Investigation of Nanofluid Natural Convection Heat Transfer in Open Ended L-shaped Cavities utilizing LBM |
| title_full | Investigation of Nanofluid Natural Convection Heat Transfer in Open Ended L-shaped Cavities utilizing LBM |
| title_fullStr | Investigation of Nanofluid Natural Convection Heat Transfer in Open Ended L-shaped Cavities utilizing LBM |
| title_full_unstemmed | Investigation of Nanofluid Natural Convection Heat Transfer in Open Ended L-shaped Cavities utilizing LBM |
| title_short | Investigation of Nanofluid Natural Convection Heat Transfer in Open Ended L-shaped Cavities utilizing LBM |
| title_sort | investigation of nanofluid natural convection heat transfer in open ended l shaped cavities utilizing lbm |
| topic | lattice boltzmann method natural convection nanofluid open-ended l-shaped cavity aspect ratio |
| url | https://jacm.scu.ac.ir/article_15620_a20754c609932e2c75cf10fd9b4ee81c.pdf |
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