双流道叶轮设计方法研究

Research on the Designing Method of Double-flow-passage Impeller

双流道叶轮设计采用变宽流道设计法,容易造成高效区向大流量偏移设计点效率偏低,因此需要对流道面积进行控制。对现有文献中双流道叶轮设计方法进行了补充,较为详尽地介绍了流道面积、流道中线分点以及平面流道中线的确定方法,为双流道叶轮设计提供了参考。

In order to provide references on impeller of double-current designing ,based on the existing documents about impeller designing methods of double-flow-passage,some methods are introduced exhaustively. Such as： how to make sure the area of flow passage, the point of flow passage＇ s centre line and planar flow passage＇s midline.