The unsteady free water sheet flow in the rotating bucket of a Pelton turbine is a very complex flow that cannot be accurately simulated for lack of a numerical method.
冲击式水轮机水斗内非定常自由水膜的流动非常复杂，至今还没有足够精确的数值方法来模拟这种流动。
2
Investment cast and ceram cast are best technology for the fabrication blade and bucket of small turbine.
采用熔模、陶瓷型铸造工艺来制造小型水轮机叶片和水斗是一种最佳的选择。
3
In the beginning of this paper, the current status and achievements in the research field of Pelton turbine are introduced respectively by means of pipe flow, free jet and bucket flow.