Flow Characteristics of a Straight-Bladed Vertical Axis Wind Turbine with Inclined Pitch Axes
Currently, vertical axis wind turbines (VAWT) are considered as an alternative technology to horizontal axis wind turbines in specific wind conditions, such as offshore farms. However, complex unsteady wake structures of VAWTs exert a significant influence on performance of wind turbines and wind fa...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2020-11-01
|
| Series: | Energies |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1996-1073/13/23/6281 |
| _version_ | 1797546430823399424 |
|---|---|
| author | Jia Guo Liping Lei |
| author_facet | Jia Guo Liping Lei |
| author_sort | Jia Guo |
| collection | DOAJ |
| description | Currently, vertical axis wind turbines (VAWT) are considered as an alternative technology to horizontal axis wind turbines in specific wind conditions, such as offshore farms. However, complex unsteady wake structures of VAWTs exert a significant influence on performance of wind turbines and wind farms. In the present study, instantaneous flow fields around and downstream of an innovative VAWT with inclined pitch axes are simulated by an actuator line model. Unsteady flow characteristics around the wind turbine with variations of azimuthal angles are discussed. Several fluid parameters are then evaluated on horizontal and vertical planes under conditions of various fold angles and incline angles. Results show that the total estimated wind energy in the shadow of the wind turbine with an incline angle of 30° and 150° is 4.6% higher than that with an incline angle of 90°. In this way, appropriate arrangements of wind turbines with various incline angles have the potential to obtain more power output in a wind farm. |
| first_indexed | 2024-03-10T14:29:39Z |
| format | Article |
| id | doaj.art-f3d35c61f29b4389898c061739a44dbe |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-10T14:29:39Z |
| publishDate | 2020-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-f3d35c61f29b4389898c061739a44dbe2023-11-20T22:46:15ZengMDPI AGEnergies1996-10732020-11-011323628110.3390/en13236281Flow Characteristics of a Straight-Bladed Vertical Axis Wind Turbine with Inclined Pitch AxesJia Guo0Liping Lei1Key Laboratory for Advanced Materials Processing Technology of MOE, Department of Mechanical Engineering, Tsinghua University, Beijing 100084, ChinaKey Laboratory for Advanced Materials Processing Technology of MOE, Department of Mechanical Engineering, Tsinghua University, Beijing 100084, ChinaCurrently, vertical axis wind turbines (VAWT) are considered as an alternative technology to horizontal axis wind turbines in specific wind conditions, such as offshore farms. However, complex unsteady wake structures of VAWTs exert a significant influence on performance of wind turbines and wind farms. In the present study, instantaneous flow fields around and downstream of an innovative VAWT with inclined pitch axes are simulated by an actuator line model. Unsteady flow characteristics around the wind turbine with variations of azimuthal angles are discussed. Several fluid parameters are then evaluated on horizontal and vertical planes under conditions of various fold angles and incline angles. Results show that the total estimated wind energy in the shadow of the wind turbine with an incline angle of 30° and 150° is 4.6% higher than that with an incline angle of 90°. In this way, appropriate arrangements of wind turbines with various incline angles have the potential to obtain more power output in a wind farm.https://www.mdpi.com/1996-1073/13/23/6281vertical axis wind turbineactuator line modelflow characteristicspitch regulation |
| spellingShingle | Jia Guo Liping Lei Flow Characteristics of a Straight-Bladed Vertical Axis Wind Turbine with Inclined Pitch Axes Energies vertical axis wind turbine actuator line model flow characteristics pitch regulation |
| title | Flow Characteristics of a Straight-Bladed Vertical Axis Wind Turbine with Inclined Pitch Axes |
| title_full | Flow Characteristics of a Straight-Bladed Vertical Axis Wind Turbine with Inclined Pitch Axes |
| title_fullStr | Flow Characteristics of a Straight-Bladed Vertical Axis Wind Turbine with Inclined Pitch Axes |
| title_full_unstemmed | Flow Characteristics of a Straight-Bladed Vertical Axis Wind Turbine with Inclined Pitch Axes |
| title_short | Flow Characteristics of a Straight-Bladed Vertical Axis Wind Turbine with Inclined Pitch Axes |
| title_sort | flow characteristics of a straight bladed vertical axis wind turbine with inclined pitch axes |
| topic | vertical axis wind turbine actuator line model flow characteristics pitch regulation |
| url | https://www.mdpi.com/1996-1073/13/23/6281 |
| work_keys_str_mv | AT jiaguo flowcharacteristicsofastraightbladedverticalaxiswindturbinewithinclinedpitchaxes AT lipinglei flowcharacteristicsofastraightbladedverticalaxiswindturbinewithinclinedpitchaxes |