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。
A saddle point and horse shoe vortex were formed in the front of the hole because of the rigid body character of coolant jet near the hole.
射流在出口附近具有刚体的特性，并在射流前方形成了鞍点及马蹄涡。
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