非均匀流场中桨叶剖面设计方法

给出了非均匀流场中螺旋桨桨叶剖面的设计方法，提出了保持剖面空泡特征不变的等效运转曲线的思想，并创建了等效运转曲线的确定方法．基于等效运转曲线设计的桨叶剖面能有效地控制空泡范围和空泡类型，得到期望的空泡性能．剖面采用母型剖面方法来设计，进而可确定桨叶弦向环量分布，然后由升力面理论设计三维桨叶的几何形状．通过实例螺旋桨的设计，说明本方法是合理和有效的．

Design Method of Blade Section in Non-uniform Flow Field

This paper presents a design method of propeller blade section operating in non-uniform flow field and an idea of equivalent operating curve with unchanged cavitations characteristic on blade section, the method for selecting the curve is set up. Blade section designed based on equivalent operating curve can effectively control the cavitaion area and type, and the desired cavitation performance can obtained. The blade section can be designed by parent section, thereby its chordwis circulation distributions can be worked out, and then lifting surface theory is used to design the three dimension blade geometry. In the design example, the cavitation performance is improved markedly, this shows that present method is reasonable and effective.