中文说明：叶片元素计算法基于叶素-动量理论（BEM）. 采用叶素-动量理论可以计算风轮旋转面中的轴向诱导。风力发电用
English Description：
The blade element calculation method is based on the blade element momentum theory (BEM), which can be used to calculate the axial induction in the rotating surface of a wind turbine. For wind power generation