Recent Development in the Design of Wind Deflectors for Vertical Axis Wind Turbine: A Review
Developments in the design of wind turbines with augmentation are advancing around the globe with the goal of generating electricity close to the user in built-up areas. This is certain to help lessen the power generation load as well as distribution and transmission network costs by reducing the di...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-08-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/14/16/5140 |
| _version_ | 1797523986349817856 |
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| author | Altaf Hussain Rajpar Imran Ali Ahmad E. Eladwi Mohamed Bashir Ali Bashir |
| author_facet | Altaf Hussain Rajpar Imran Ali Ahmad E. Eladwi Mohamed Bashir Ali Bashir |
| author_sort | Altaf Hussain Rajpar |
| collection | DOAJ |
| description | Developments in the design of wind turbines with augmentation are advancing around the globe with the goal of generating electricity close to the user in built-up areas. This is certain to help lessen the power generation load as well as distribution and transmission network costs by reducing the distance between the user and the power source. The main objectives driving the development and advancement of vertical-axis wind turbines are increasing the power coefficient and the torque coefficient by optimizing the upstream wind striking on the rotor blades. Unlike horizontal-axis wind turbines, vertical axis turbines generate not only positive torque but also negative torque during operation. The negative torque generated by the returning blade is a key issue for vertical-axis wind turbines (VAWTs) that is counterproductive. Installation of wind deflectors for flow augmentation helps to reduce the negative torque generated by the returning blades as well as enhance the positive torque by creating a diversion in the upstream wind towards the forwarding blade during operation. This paper reviews various designs, experiments, and CFD simulations of wind deflectors reported to date. Optimization techniques for VAWTs incorporating wind deflectors are discussed in detail. The main focus of the review was on the installation position and orientation of the deflectors and their potential contribution to increasing the power coefficient. Topics for future study are suggested in the conclusion section of the paper. |
| first_indexed | 2024-03-10T08:50:56Z |
| format | Article |
| id | doaj.art-ab08d6181784433091c8607a3745770d |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-10T08:50:56Z |
| publishDate | 2021-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-ab08d6181784433091c8607a3745770d2023-11-22T07:32:35ZengMDPI AGEnergies1996-10732021-08-011416514010.3390/en14165140Recent Development in the Design of Wind Deflectors for Vertical Axis Wind Turbine: A ReviewAltaf Hussain Rajpar0Imran Ali1Ahmad E. Eladwi2Mohamed Bashir Ali Bashir3Department of Mechanical Engineering, College of Engineering, Jouf University, Sakaka 42421, Saudi ArabiaElectrical and Electronics Engineering Department, Faculty of Engineering, Universiti Malaysia Sarawak, Sarawak 94300, MalaysiaDepartment of Mechanical Engineering, College of Engineering, Jouf University, Sakaka 42421, Saudi ArabiaDepartment of Mechanical Engineering, College of Engineering, Jouf University, Sakaka 42421, Saudi ArabiaDevelopments in the design of wind turbines with augmentation are advancing around the globe with the goal of generating electricity close to the user in built-up areas. This is certain to help lessen the power generation load as well as distribution and transmission network costs by reducing the distance between the user and the power source. The main objectives driving the development and advancement of vertical-axis wind turbines are increasing the power coefficient and the torque coefficient by optimizing the upstream wind striking on the rotor blades. Unlike horizontal-axis wind turbines, vertical axis turbines generate not only positive torque but also negative torque during operation. The negative torque generated by the returning blade is a key issue for vertical-axis wind turbines (VAWTs) that is counterproductive. Installation of wind deflectors for flow augmentation helps to reduce the negative torque generated by the returning blades as well as enhance the positive torque by creating a diversion in the upstream wind towards the forwarding blade during operation. This paper reviews various designs, experiments, and CFD simulations of wind deflectors reported to date. Optimization techniques for VAWTs incorporating wind deflectors are discussed in detail. The main focus of the review was on the installation position and orientation of the deflectors and their potential contribution to increasing the power coefficient. Topics for future study are suggested in the conclusion section of the paper.https://www.mdpi.com/1996-1073/14/16/5140wind deflectorVAWTwind turbine optimizationflow augmentationsmall wind energyaerodynamic-enhancement |
| spellingShingle | Altaf Hussain Rajpar Imran Ali Ahmad E. Eladwi Mohamed Bashir Ali Bashir Recent Development in the Design of Wind Deflectors for Vertical Axis Wind Turbine: A Review Energies wind deflector VAWT wind turbine optimization flow augmentation small wind energy aerodynamic-enhancement |
| title | Recent Development in the Design of Wind Deflectors for Vertical Axis Wind Turbine: A Review |
| title_full | Recent Development in the Design of Wind Deflectors for Vertical Axis Wind Turbine: A Review |
| title_fullStr | Recent Development in the Design of Wind Deflectors for Vertical Axis Wind Turbine: A Review |
| title_full_unstemmed | Recent Development in the Design of Wind Deflectors for Vertical Axis Wind Turbine: A Review |
| title_short | Recent Development in the Design of Wind Deflectors for Vertical Axis Wind Turbine: A Review |
| title_sort | recent development in the design of wind deflectors for vertical axis wind turbine a review |
| topic | wind deflector VAWT wind turbine optimization flow augmentation small wind energy aerodynamic-enhancement |
| url | https://www.mdpi.com/1996-1073/14/16/5140 |
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