Numerical study on heat transfer enhancement in a curved channel with baffles
Curved channel is commonly used in cement mill's journal bearing. In this study, heat transfer enhancement of curved channel having a rectangular cross-section with using inclined shape baffles is numerically investigated. The effects of different parameters of baffles, i.e. attack angle (α= 45...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Penerbit Akademia Baru
2020
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| Subjects: | |
| Online Access: | http://eprints.uthm.edu.my/6347/1/AJ%202020%20%28292%29.pdf |
| _version_ | 1825710173906272256 |
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| author | Al-Juhais, Lafta Flayih Muhsin Mas, Fawzi Mohammad, Hafidh Hassan |
| author_facet | Al-Juhais, Lafta Flayih Muhsin Mas, Fawzi Mohammad, Hafidh Hassan |
| author_sort | Al-Juhais, Lafta Flayih Muhsin |
| collection | UTHM |
| description | Curved channel is commonly used in cement mill's journal bearing. In this study, heat transfer enhancement of curved channel having a rectangular cross-section with using inclined shape baffles is numerically investigated. The effects of different parameters of baffles, i.e. attack angle (α= 45°, 60°, and 90°), and the number of baffles (NB=9 and 13 baffles) are examined. The water is selected as working fluid for laminar and turbulent flow region. A standard k-ε turbulence model together with enhanced wall treatment is applied to solve the complex flow in Re of 500–5000. Influences of those parameters on heat transfer and friction performances in terms of Nusselt number, friction factor , Nussellt number enhancement ratio, and thermal performance factor, respectively are studied. The results show that the best condition to achieve maximum heat transfer at angle α = 90° , NB=13 and Re=5000 compared with other conditions. Furthermore, the maximum thermal performance factor (TEF) of the curved channel with using baffles is 4.4 at the same condition. This indicated that the geometry of baffles inside curved channel can improve the heat transfer significantly with reasonable increase in friction losses. |
| first_indexed | 2024-03-05T21:53:36Z |
| format | Article |
| id | uthm.eprints-6347 |
| institution | Universiti Tun Hussein Onn Malaysia |
| language | English |
| last_indexed | 2024-03-05T21:53:36Z |
| publishDate | 2020 |
| publisher | Penerbit Akademia Baru |
| record_format | dspace |
| spelling | uthm.eprints-63472022-01-30T04:01:36Z http://eprints.uthm.edu.my/6347/ Numerical study on heat transfer enhancement in a curved channel with baffles Al-Juhais, Lafta Flayih Muhsin Mas, Fawzi Mohammad, Hafidh Hassan T Technology (General) TJ Mechanical engineering and machinery Curved channel is commonly used in cement mill's journal bearing. In this study, heat transfer enhancement of curved channel having a rectangular cross-section with using inclined shape baffles is numerically investigated. The effects of different parameters of baffles, i.e. attack angle (α= 45°, 60°, and 90°), and the number of baffles (NB=9 and 13 baffles) are examined. The water is selected as working fluid for laminar and turbulent flow region. A standard k-ε turbulence model together with enhanced wall treatment is applied to solve the complex flow in Re of 500–5000. Influences of those parameters on heat transfer and friction performances in terms of Nusselt number, friction factor , Nussellt number enhancement ratio, and thermal performance factor, respectively are studied. The results show that the best condition to achieve maximum heat transfer at angle α = 90° , NB=13 and Re=5000 compared with other conditions. Furthermore, the maximum thermal performance factor (TEF) of the curved channel with using baffles is 4.4 at the same condition. This indicated that the geometry of baffles inside curved channel can improve the heat transfer significantly with reasonable increase in friction losses. Penerbit Akademia Baru 2020 Article PeerReviewed text en http://eprints.uthm.edu.my/6347/1/AJ%202020%20%28292%29.pdf Al-Juhais, Lafta Flayih Muhsin and Mas, Fawzi and Mohammad, Hafidh Hassan (2020) Numerical study on heat transfer enhancement in a curved channel with baffles. Journal of Advanced Research in Fluid Mechanics and Thermal Sciences, 68 (2). pp. 72-83. ISSN 2289-7879 https://doi.org/10.37934/arfmts.68.2.7283 |
| spellingShingle | T Technology (General) TJ Mechanical engineering and machinery Al-Juhais, Lafta Flayih Muhsin Mas, Fawzi Mohammad, Hafidh Hassan Numerical study on heat transfer enhancement in a curved channel with baffles |
| title | Numerical study on heat transfer enhancement in a curved channel with baffles |
| title_full | Numerical study on heat transfer enhancement in a curved channel with baffles |
| title_fullStr | Numerical study on heat transfer enhancement in a curved channel with baffles |
| title_full_unstemmed | Numerical study on heat transfer enhancement in a curved channel with baffles |
| title_short | Numerical study on heat transfer enhancement in a curved channel with baffles |
| title_sort | numerical study on heat transfer enhancement in a curved channel with baffles |
| topic | T Technology (General) TJ Mechanical engineering and machinery |
| url | http://eprints.uthm.edu.my/6347/1/AJ%202020%20%28292%29.pdf |
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