Experimental and numerical investigation of the thermal - hydraulic performance of flow inside helical coil elliptic tubes
Helical coil tubes are essential in a variety of engineering applications due to their improved heat transfer and compact shape. The current study presents an experimental and numerical investigation of geometrical optimization for helical coil elliptic tubes. Four distinct coil pitch values are exa...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-01-01
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| Series: | Alexandria Engineering Journal |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S111001682401161X |
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| author | Ghanem Alabdali Wael M. El-Maghlany Yasser S. Mohamed M.A. Qassem Mohamed A. Alnakeeb |
| author_facet | Ghanem Alabdali Wael M. El-Maghlany Yasser S. Mohamed M.A. Qassem Mohamed A. Alnakeeb |
| author_sort | Ghanem Alabdali |
| collection | DOAJ |
| description | Helical coil tubes are essential in a variety of engineering applications due to their improved heat transfer and compact shape. The current study presents an experimental and numerical investigation of geometrical optimization for helical coil elliptic tubes. Four distinct coil pitch values are examined with a constant perimeter for all geometries and three aspect ratio values (1, 0.75, 0.5) utilizing water as the working fluid across varying the volume flow rates. The helical coil has the same surface area as the tube for each coil. The numerical simulation is conducted using the ANSYS FLUENT CFD software (Version 19.2). The experimental and numerical results indicate that the increase in heat transfer due to an increase in mass flow rate is significantly greater than the improvement gained by changing the aspect ratios. Increasing the volume flow rate to 3 L/min significantly improves the average heat transfer coefficient, with a 66.6 % increase found at a maximum coil pitch of 0.08 m and an aspect ratio of 0.5. Furthermore, a helical coil with an aspect ratio of one (circular cross-section) exhibits the best compromise between pressure drop penalty and heat transfer enhancement, resulting in the greatest hydraulic thermal performance parameter. |
| format | Article |
| id | doaj-art-123482fcebad46698d0fe2f62c422991 |
| institution | Kabale University |
| issn | 1110-0168 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Alexandria Engineering Journal |
| spelling | doaj-art-123482fcebad46698d0fe2f62c4229912025-01-09T06:13:22ZengElsevierAlexandria Engineering Journal1110-01682025-01-011102436Experimental and numerical investigation of the thermal - hydraulic performance of flow inside helical coil elliptic tubesGhanem Alabdali0Wael M. El-Maghlany1Yasser S. Mohamed2M.A. Qassem3Mohamed A. Alnakeeb4Department of Mechanical Engineering, Faculty of Engineering, Alexandria University, EgyptCorresponding author.; Department of Mechanical Engineering, Faculty of Engineering, Alexandria University, EgyptDepartment of Mechanical Engineering, Faculty of Engineering, Alexandria University, EgyptDepartment of Mechanical Engineering, Faculty of Engineering, Alexandria University, EgyptDepartment of Mechanical Engineering, Faculty of Engineering, Alexandria University, EgyptHelical coil tubes are essential in a variety of engineering applications due to their improved heat transfer and compact shape. The current study presents an experimental and numerical investigation of geometrical optimization for helical coil elliptic tubes. Four distinct coil pitch values are examined with a constant perimeter for all geometries and three aspect ratio values (1, 0.75, 0.5) utilizing water as the working fluid across varying the volume flow rates. The helical coil has the same surface area as the tube for each coil. The numerical simulation is conducted using the ANSYS FLUENT CFD software (Version 19.2). The experimental and numerical results indicate that the increase in heat transfer due to an increase in mass flow rate is significantly greater than the improvement gained by changing the aspect ratios. Increasing the volume flow rate to 3 L/min significantly improves the average heat transfer coefficient, with a 66.6 % increase found at a maximum coil pitch of 0.08 m and an aspect ratio of 0.5. Furthermore, a helical coil with an aspect ratio of one (circular cross-section) exhibits the best compromise between pressure drop penalty and heat transfer enhancement, resulting in the greatest hydraulic thermal performance parameter.http://www.sciencedirect.com/science/article/pii/S111001682401161XExperimental and numericalThermal - hydraulic performanceHelical coilElliptic tubes |
| spellingShingle | Ghanem Alabdali Wael M. El-Maghlany Yasser S. Mohamed M.A. Qassem Mohamed A. Alnakeeb Experimental and numerical investigation of the thermal - hydraulic performance of flow inside helical coil elliptic tubes Alexandria Engineering Journal Experimental and numerical Thermal - hydraulic performance Helical coil Elliptic tubes |
| title | Experimental and numerical investigation of the thermal - hydraulic performance of flow inside helical coil elliptic tubes |
| title_full | Experimental and numerical investigation of the thermal - hydraulic performance of flow inside helical coil elliptic tubes |
| title_fullStr | Experimental and numerical investigation of the thermal - hydraulic performance of flow inside helical coil elliptic tubes |
| title_full_unstemmed | Experimental and numerical investigation of the thermal - hydraulic performance of flow inside helical coil elliptic tubes |
| title_short | Experimental and numerical investigation of the thermal - hydraulic performance of flow inside helical coil elliptic tubes |
| title_sort | experimental and numerical investigation of the thermal hydraulic performance of flow inside helical coil elliptic tubes |
| topic | Experimental and numerical Thermal - hydraulic performance Helical coil Elliptic tubes |
| url | http://www.sciencedirect.com/science/article/pii/S111001682401161X |
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