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Large-eddy simulation of airflow over complex terrain and application to the wind turbine safety management
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| Abstract | With the growth in the number of wind powered generator facilities in recent years, such facilities built on complex terrain such as mountainous areas have seen increase in accidents such as damage of... turbine blades. In face of the recent growth in the number of wind turbine accidents, the national government has reinforced its safety regulations on wind power generation facilities. This research was conducted in cooperation with Kyudenko New Energy Co., Ltd., to measure deformation on wind turbine blades and gather actual data on wind conditions for Wind Turbine #10 of the Kushikino Reimei Wind Farm (in operation since Nov. 2012), in Kushikino, Kagoshima Prefecture. Based on the gathered measurement data, the wind direction that most impacted the structural strength of the turbine was identified, and the data was analyzed in detail. To examine into the failure analysis method based on numerical wind loads, numerical wind simulation based on large-eddy simulation (numerical wind diagnosis) was conducted for the wind directions that have been identified. The research focused especially on the 3D air flow structure and wind load characteristics of east wind, which showed the largest impact from terrain-induced turbulence and north wind that showed the least impact and studied the correlation with actual measurement data. Lastly, a proposal is presented on application on wind turbine safety management based on numerical wind simulation with attention to the requirements in the structural strength of the wind turbine.show more |
| Table of Contents | 1.緒言 2.串木野れいめい風力発電所の概要 3.風車疲労荷重データ解析(実測データ解析) 4.ナセル風力・風向計による気流場解析(実測データ解析) 5.数値風況シミュレーション手法の概要 6.数値風況シミュレーション条件の概要 7.計算結果と考察 8.おわりに |
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| Created Date | 2018.05.08 |
| Modified Date | 2023.02.27 |