非定常乱流モデルLESによる地形性乱流診断と風車安全管理への応用
概要
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.
