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Comparison between blade-element models of propellers

机译：螺旋桨叶片模型之间的比较

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Blade-element models are the most common models for the analysis of propeller aerodynamics, performance calculations and propeller design. In spite of their simplicity these models are very efficient and accurate. Blade-element models use the local induced velocities as an input thus they should be combined with another model in order to calculate these induced velocities. Various models are used for the calculation of the induced velocity, where the most popular ones include: momentum, simplified-momentum, lifting-line (prescribed and free wake), and vortex (McCormick and Theodorsen) models. The paper describes the various models, compares their results and discusses the advantages and disadvantages of each one. The results indicate that the Blade-element/simplified-momentum model offers very good accuracy together with high efficiency. For propeller performance calculations during steady axial flight, where most of the cross-sections do not experience stall, detailed and complicated models for calculating the induced velocities do not show advantages over the simple blade-element/simplified-momentum model.
机译：桨叶模型是用于螺旋桨空气动力学分析，性能计算和螺旋桨设计的最常用模型。尽管它们简单，但是这些模型非常有效且准确。叶片元素模型使用局部感应速度作为输入，因此应将其与另一个模型组合以计算这些感应速度。各种模型用于计算感应速度，其中最流行的模型包括：动量模型，简化动量模型，提升线模型（规定和自由尾迹）和涡旋模型（McCormick和Theodorsen）。本文介绍了各种模型，比较了它们的结果，并讨论了每种模型的优缺点。结果表明，叶片元素/简化动量模型提供了非常好的准确性和高效率。对于在大多数横截面没有失速的稳定轴向飞行过程中进行的螺旋桨性能计算，用于计算诱导速度的详细而复杂的模型并没有显示出比简单的叶片/简化动量模型更好的优势。

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