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Wind and Structures Volume 24, Number 3, March 2017 , pages 205-221 DOI: https://doi.org/10.12989/was.2017.24.3.205 |
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Analysis of the effect of blade positions on the aerodynamic performances of wind turbine tower-blade system in halt states |
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Shitang Ke, Wei Yu, Tongguang Wang, Yaojun Ge and Yukio Tamura
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| Abstract | ||
| The unsteady flow field disturbance between the blades and tower is one of the primary factors affecting the aerodynamic performance of wind turbine. Based on the research object of a 3MW horizontal axis wind turbine which was developed independently by Nanjing University of Aeronautics and Astronautics, numerical simulation on the aerodynamic performance of wind turbine system in halt state with blades in different position was conducted using large eddy simulation (LES) method. Based on the 3D unsteady numerical simulation results in a total of eight conditions (determined by the relative position with the tower during the complete rotation process of the blade), the characteristics of wind pressure distributions of the wind turbine system and action mechanism of surrounding flow field were analysed. The effect of different position of blades on the aerodynamic performance of wind turbine in halt state as well as the disturbance effect was evaluated. Results of the study showed that the halt position of blades had significant effect on the wind pressure distribution of the wind turbine system as well as the characteristics of flow around. Relevant conclusions from this study provided reference for the wind-resistant design of large scale wind turbine system in different halt states. | ||
| Key Words | ||
| wind turbine system; halt state; blade position; large eddy simulation; aerodynamic performance; parameter analysis | ||
| Address | ||
| Shitang Ke: Department of Civil Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China; State Key Laboratory for Disaster Reduction in Civil Engineering, Tongji University, Shanghai 200092, China Wei Yu and Tongguang Wang: Department of Civil Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China Yaojun Ge: State Key Laboratory for Disaster Reduction in Civil Engineering, Tongji University, Shanghai 200092, China Yukio Tamura: Wind Engineering Research Center, Tokyo Polytechnic University, 1583 Iiyama, Atsugi, Kanagawa 243-0297, Japan | ||