Recent research developments have indicated that substantial reduction of both the fatigue and ultimate loads can be achieved by adopting trailing edge (TE) flap control strategies. Their aeroelastic tools employ blade element momentum (BEM) aerodynamic models enhanced with a sectional 2D treatment of the TE flap, neglecting the 3D effect of the trailed vorticity in the vicinity of the moving flap. In the present paper, a cross comparison of the BEM‐based models used in the aeroelastic analysis tools against higher fidelity, free‐wake lifting line, and fully resolved CFD models is performed, with the aim to highlight limitations of the first. A second level of comparison assesses the differences among tools of the same level of fidelity from different research groups. Moreover, a number of engineering‐based correction models that are used in conjunction with BEM and account for the complex 3D trailed vorticity effect are assessed. Simulations of a stiff rotor configuration of the DTU 10 MW Reference Wind Turbine are performed for a prescribed, harmonic TE flap motion, and aerodynamic loads are compared at the sectional and rotor‐integrated level. For the studied stiff rotor with the chosen flaps configuration, the results of the code‐to‐code comparisons indicate that low‐fidelity BEM tools consistently predict 1P variations of the rotor thrust due to the TE flap motion, but fail to reproduce the details of the load distributions especially in the vicinity of the flap section. BEM‐based corrected models, which account for 3D‐induced velocity effects, provide load distribution predictions closer to higher fidelity free‐wake and CFD models.

中文翻译：

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使用测距保真度工具对风力涡轮机叶片上的振荡后缘襟翼进行仿真

最近的研究表明，通过采用后缘（TE）襟翼控制策略，可以大大降低疲劳和极限载荷。他们的气动工具采用叶片元素动量（BEM）空气动力学模型，并通过对TE襟翼进行分段2D处理得到了增强，而忽略了活动襟翼附近尾随涡度的3D效果。在本文中，对气动弹性分析工具中使用的基于BEM的模型与更高保真度，自由苏醒提升线和完全解析的CFD模型进行了交叉比较，目的是强调第一个模型的局限性。第二级比较评估了来自不同研究组的相同保真度工具之间的差异。而且，评估了许多基于工程的校正模型，这些模型与BEM结合使用并解决了复杂的3D跟踪涡度效应。针对规定的谐波TE襟翼运动，对DTU 10 MW参考风力涡轮机的刚性转子配置进行了仿真，并在截面和转子集成水平上比较了空气动力负载。对于已研究的具有选定襟翼配置的刚性转子，代码与代码的比较结果表明，低保真BEM工具能够始终预测由于TE襟翼运动而导致的转子推力的1P变化，但无法重现尤其是在襟翼部分附近的载荷分布。基于BEM的校正模型，该模型考虑了3D引起的速度影响，