本文讨论了用三维有限元法来解水力机械转轮内部的流动问题。计算时假定绝对流动无旋。计算区域包括两个叶片之间的部分,并向上、下游各延伸一段。上游侧面可以不是流面,下游侧面必须为流面,因此其位置也是求解对象。应用这一方法计算了一个轴流式转轮,可以看出,结果是合理的。 This article discusses the use of three-dimensional finite element method to solve the problem of flow inside hydraulic machinery runner. The calculation assumes absolute flow without rotation. The calculation area includes the part between the two leaves, extending upwards and downwards by one each. The upstream side may not be the flow surface, the downstream side must be the flow surface, so its location is also the object of solution. Using this method to calculate an axial runner, we can see that the result is reasonable.