研究了水斗数对冲击式水轮机性能的影响。
The experimental study on the influence of bucket Numbers on the Pelton turbine's performance was presented.
本文在首先介绍了冲击式水轮机内部流动中管内流、自由射流以及水斗绕流等方面的研究现状和进展。
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.
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。
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.
由于冲击式水轮机三维自由射流是两相流，进行瞬态计算的时间步长必须非常小，这就需要大量的计算资源。
The time step is very small for the transient analysis of nozzle jet flow, which occupied numerous computational resources.
冲击式水轮机试验表明：真机效率均低于模型效率，这种反常的趋势容易引起从模型试验结果预测真机性能的风险性。
This characteristic of Pelton turbine is apt to take the risk to predict the hydraulic performance of prototype from model.
将各种按动量定理工作的冲击式水轮机作为研究对象，构建其基本原理模型，严谨地推导出原理模型基本方程及其数值解。
The basic principle model was established on the various impulse turbines. The basic principle formulas, the formulas of kinetic energy and direction of outflow were deduced strictly.
通过对国内电厂冲击式水轮发电机水轮机转轮断斗的分析研究，找出了断斗的原因，提出了解决办法，以避免转轮产生断斗。
The broken reasons of bailer of impeller was found out by analyzing some relevant cases occurred in a jet-type impulse turbine in China, some measures to handling it was presented.
通过对国内电厂冲击式水轮发电机水轮机转轮断斗的分析研究，找出了断斗的原因，提出了解决办法，以避免转轮产生断斗。
The broken reasons of bailer of impeller was found out by analyzing some relevant cases occurred in a jet-type impulse turbine in China, some measures to handling it was presented.
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