螺旋桨表面和它的尾涡面离散为四边形双曲面元，每个面元上布置等强度偶极子和源汇分布。
The surface of propeller and its trailing vortex is divided into a number of small hyperboloidal quadrilateral panels with constant source sink and doublet distributions.
该文应用低阶速度势面元法建立了预报三维水翼水动力性能的数值方法，重点对翼梢和尾涡进行了研究。
A potential-based surface panel method is applied to predicting the performance for three-dimensional hydrofoils, with emphasis on the tip region.
用该方法研究了近地升力面尾涡卷起的地面效应。
The improved vortex lattice method is used to predict the ground effect on wake roll-up behind a lifting surface.
采用基于涡系理论的模型建立刚性圆柱尾迹和预定尾迹模型的升力面法预测程序，对无偏航情况的风力机性能进行了预测。
Based on the vortex theory, lifting surface method is used to establish wind turbine performance prediction model with rigid cylinder wake model, prescribed wake model and free-wake method.
采用基于涡系理论的模型建立刚性圆柱尾迹和预定尾迹模型的升力面法预测程序，对无偏航情况的风力机性能进行了预测。
Based on the vortex theory, lifting surface method is used to establish wind turbine performance prediction model with rigid cylinder wake model, prescribed wake model and free-wake method.
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