The distribution of the angles of attack over the span of a rotor blade, together with blade element theory, provides a useful framework to understand forces, performance and other fluid dynamic phenomena of axial‐flow rotors. However, the angle of attack is not straightforward to define for a three‐dimensional rotor, where the flow is perturbed by the blade circulation, shed vorticity and wake development.

中文翻译：

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从叶片解析转子CFD仿真中提取迎角

攻角在转子叶片跨度上的分布以及叶片元件理论为了解轴流转子的力，性能和其他流体动力学现象提供了有用的框架。但是，对于三维转子，很难定义迎角，在三维转子中，叶片的流通，旋涡和尾流的发展会扰动气流。