Effect of upstream deflector utilization on H-Darrieus wind turbine performance: An optimization study
This paper aims to enhance the performance of H-Darrieus Vertical Axis Wind Turbine (VAWT) via introducing upstream deflectors. The impact of this addition has been investigated and discussed through different deflector configurations. The turbine performance before and after adding different wind r...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2023-01-01
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| Series: | Alexandria Engineering Journal |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1110016822005075 |
| _version_ | 1797943121228595200 |
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| author | Iham F. Zidane Hesham M. Ali Greg Swadener Yehia A. Eldrainy Ali I. Shehata |
| author_facet | Iham F. Zidane Hesham M. Ali Greg Swadener Yehia A. Eldrainy Ali I. Shehata |
| author_sort | Iham F. Zidane |
| collection | DOAJ |
| description | This paper aims to enhance the performance of H-Darrieus Vertical Axis Wind Turbine (VAWT) via introducing upstream deflectors. The impact of this addition has been investigated and discussed through different deflector configurations. The turbine performance before and after adding different wind rotor barriers was compared. A two dimensional, incompressible, transient, and turbulent flow model was built up in order to simulate the air flow around the turbine blades. Model verification and validation were performed through comparing the model solutions using different mesh sizes, time steps, turbulent models, and discretization schemes. Computational Fluid Dynamics (CFD) models were validated to provide novel insights on the effect of the deflectors on the aerodynamic characteristics of a VAWT blades. Results showed that the presence of a single deflector increases the highest value of the moment coefficient of the bare configuration by 24%, either increases the negative torque values, while two defectors increase the maximum value by 22% and the overall average value of the moment coefficient over the optimal range for the tip speed ratio. |
| first_indexed | 2024-04-10T20:19:18Z |
| format | Article |
| id | doaj.art-da1d03b7d43142be94d9efa8197204ad |
| institution | Directory Open Access Journal |
| issn | 1110-0168 |
| language | English |
| last_indexed | 2024-04-10T20:19:18Z |
| publishDate | 2023-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Alexandria Engineering Journal |
| spelling | doaj.art-da1d03b7d43142be94d9efa8197204ad2023-01-26T04:44:17ZengElsevierAlexandria Engineering Journal1110-01682023-01-0163175189Effect of upstream deflector utilization on H-Darrieus wind turbine performance: An optimization studyIham F. Zidane0Hesham M. Ali1Greg Swadener2Yehia A. Eldrainy3Ali I. Shehata4Mechanical Engineering Department, College of Engineering and Technology, Arab Academy of Science, Technology and Maritime Transport (AASTMT), 1029 Abu Kir, Alexandria, Egypt; Corresponding authors.Mechanical Engineering Department, College of Engineering and Technology, Arab Academy of Science, Technology and Maritime Transport (AASTMT), 1029 Abu Kir, Alexandria, EgyptSchool of Engineering and Applied Science, Aston University, Aston Triangle, Birmingham B4 7ET, United Kingdom; Corresponding authors.Mechanical Engineering Department, College of Engineering and Technology, Arab Academy of Science, Technology and Maritime Transport (AASTMT), 1029 Abu Kir, Alexandria, Egypt; Mechanical Engineering Department, Faculty of Engineering, Alexandria University, Alexandria, EgyptMechanical Engineering Department, College of Engineering and Technology, Arab Academy of Science, Technology and Maritime Transport (AASTMT), 1029 Abu Kir, Alexandria, EgyptThis paper aims to enhance the performance of H-Darrieus Vertical Axis Wind Turbine (VAWT) via introducing upstream deflectors. The impact of this addition has been investigated and discussed through different deflector configurations. The turbine performance before and after adding different wind rotor barriers was compared. A two dimensional, incompressible, transient, and turbulent flow model was built up in order to simulate the air flow around the turbine blades. Model verification and validation were performed through comparing the model solutions using different mesh sizes, time steps, turbulent models, and discretization schemes. Computational Fluid Dynamics (CFD) models were validated to provide novel insights on the effect of the deflectors on the aerodynamic characteristics of a VAWT blades. Results showed that the presence of a single deflector increases the highest value of the moment coefficient of the bare configuration by 24%, either increases the negative torque values, while two defectors increase the maximum value by 22% and the overall average value of the moment coefficient over the optimal range for the tip speed ratio.http://www.sciencedirect.com/science/article/pii/S1110016822005075H-DarrieusVertical Axis Wind TurbineDeflectorAerodynamic performanceCFD |
| spellingShingle | Iham F. Zidane Hesham M. Ali Greg Swadener Yehia A. Eldrainy Ali I. Shehata Effect of upstream deflector utilization on H-Darrieus wind turbine performance: An optimization study Alexandria Engineering Journal H-Darrieus Vertical Axis Wind Turbine Deflector Aerodynamic performance CFD |
| title | Effect of upstream deflector utilization on H-Darrieus wind turbine performance: An optimization study |
| title_full | Effect of upstream deflector utilization on H-Darrieus wind turbine performance: An optimization study |
| title_fullStr | Effect of upstream deflector utilization on H-Darrieus wind turbine performance: An optimization study |
| title_full_unstemmed | Effect of upstream deflector utilization on H-Darrieus wind turbine performance: An optimization study |
| title_short | Effect of upstream deflector utilization on H-Darrieus wind turbine performance: An optimization study |
| title_sort | effect of upstream deflector utilization on h darrieus wind turbine performance an optimization study |
| topic | H-Darrieus Vertical Axis Wind Turbine Deflector Aerodynamic performance CFD |
| url | http://www.sciencedirect.com/science/article/pii/S1110016822005075 |
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