Numerical Analysis of the Effects of Rotating Wind Turbine Blades on the Aerodynamic Forces Acting on Tower
We have investigated the effects of the rotating blades of an upwind-type three-blade horizontal-axis wind turbine (HAWT) on the basic characteristics of aerodynamic forces acting on its tower by conducting improved delayed detached-eddy simulations (DESs). Three tip-speed ratios were considered for...
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MDPI AG
2017-01-01
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| Series: | Energies |
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| Online Access: | http://www.mdpi.com/1996-1073/10/1/121 |
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| author | Takaaki Kono Satoshi Nebucho Tetsuya Kogaki Takahiro Kiwata Shigeo Kimura Nobuyoshi Komatsu |
| author_facet | Takaaki Kono Satoshi Nebucho Tetsuya Kogaki Takahiro Kiwata Shigeo Kimura Nobuyoshi Komatsu |
| author_sort | Takaaki Kono |
| collection | DOAJ |
| description | We have investigated the effects of the rotating blades of an upwind-type three-blade horizontal-axis wind turbine (HAWT) on the basic characteristics of aerodynamic forces acting on its tower by conducting improved delayed detached-eddy simulations (DESs). Three tip-speed ratios were considered for the operating conditions of the HAWT: λ = 3 (low), λ = 6 (optimum), and λ = 10 (high). The diversion of the flow approaching the tower by the rotating blades and the low-pressure region that formed downwind of the blades significantly affected the aerodynamic forces acting on the tower. For example, the azimuth angle around the tower at which the pressure reached a maximum at each height shifted significantly in the direction of the movement of the blade passing the tower because of the diversion of the flow by the blades. Fluctuations in the lift force of the tower were significantly larger than those in its drag force because of the low-pressure region downwind of the blades. |
| first_indexed | 2024-04-13T07:03:32Z |
| format | Article |
| id | doaj.art-a444f011ef3f442495937fdb17493c9e |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-04-13T07:03:32Z |
| publishDate | 2017-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-a444f011ef3f442495937fdb17493c9e2022-12-22T02:57:03ZengMDPI AGEnergies1996-10732017-01-0110112110.3390/en10010121en10010121Numerical Analysis of the Effects of Rotating Wind Turbine Blades on the Aerodynamic Forces Acting on TowerTakaaki Kono0Satoshi Nebucho1Tetsuya Kogaki2Takahiro Kiwata3Shigeo Kimura4Nobuyoshi Komatsu5Institute of Science and Engineering, Kanazawa University, Kanazawa 920-1192, JapanInstitute of Science and Engineering, Kanazawa University, Kanazawa 920-1192, JapanNational Instiute of Advanced Industrial Science and Technology, Koriyama 963-0298, JapanInstitute of Science and Engineering, Kanazawa University, Kanazawa 920-1192, JapanInstitute of Science and Engineering, Kanazawa University, Kanazawa 920-1192, JapanInstitute of Science and Engineering, Kanazawa University, Kanazawa 920-1192, JapanWe have investigated the effects of the rotating blades of an upwind-type three-blade horizontal-axis wind turbine (HAWT) on the basic characteristics of aerodynamic forces acting on its tower by conducting improved delayed detached-eddy simulations (DESs). Three tip-speed ratios were considered for the operating conditions of the HAWT: λ = 3 (low), λ = 6 (optimum), and λ = 10 (high). The diversion of the flow approaching the tower by the rotating blades and the low-pressure region that formed downwind of the blades significantly affected the aerodynamic forces acting on the tower. For example, the azimuth angle around the tower at which the pressure reached a maximum at each height shifted significantly in the direction of the movement of the blade passing the tower because of the diversion of the flow by the blades. Fluctuations in the lift force of the tower were significantly larger than those in its drag force because of the low-pressure region downwind of the blades.http://www.mdpi.com/1996-1073/10/1/121horizontal-axis wind turbine (HAWT)computational fluid dynamics (CFD)detached-eddy simulation (DES)toweraerodynamic forceblade-tower interaction (BTI) |
| spellingShingle | Takaaki Kono Satoshi Nebucho Tetsuya Kogaki Takahiro Kiwata Shigeo Kimura Nobuyoshi Komatsu Numerical Analysis of the Effects of Rotating Wind Turbine Blades on the Aerodynamic Forces Acting on Tower Energies horizontal-axis wind turbine (HAWT) computational fluid dynamics (CFD) detached-eddy simulation (DES) tower aerodynamic force blade-tower interaction (BTI) |
| title | Numerical Analysis of the Effects of Rotating Wind Turbine Blades on the Aerodynamic Forces Acting on Tower |
| title_full | Numerical Analysis of the Effects of Rotating Wind Turbine Blades on the Aerodynamic Forces Acting on Tower |
| title_fullStr | Numerical Analysis of the Effects of Rotating Wind Turbine Blades on the Aerodynamic Forces Acting on Tower |
| title_full_unstemmed | Numerical Analysis of the Effects of Rotating Wind Turbine Blades on the Aerodynamic Forces Acting on Tower |
| title_short | Numerical Analysis of the Effects of Rotating Wind Turbine Blades on the Aerodynamic Forces Acting on Tower |
| title_sort | numerical analysis of the effects of rotating wind turbine blades on the aerodynamic forces acting on tower |
| topic | horizontal-axis wind turbine (HAWT) computational fluid dynamics (CFD) detached-eddy simulation (DES) tower aerodynamic force blade-tower interaction (BTI) |
| url | http://www.mdpi.com/1996-1073/10/1/121 |
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