Method for calculating vibration probability density curve of runner of full-through-flow water turbine

The invention discloses a method for calculating a vibration probability density curve of a runner of a full-through-flow water turbine, and the method specifically comprises the following steps: the probability density distribution of the vibration speed of the runner can be quickly calculated according to the cavitation coefficient of the full-through-flow water turbine during the current operation, so that the workload and time of the vibration test of the runner are greatly saved; the problem that the vibration characteristics of the rotating wheel cannot be rapidly evaluated under different cavitation coefficients is solved. 本发明公开了一种计算全贯流水轮机转轮振动概率密度曲线的方法，具体包括如下步骤：采用本发明能够根据全贯流式水轮机当前运行时的空化系数快速计算出转轮振动速度的概率密度分布，极大节省了转轮振动测试的工作量和时间，解决了不同空化系数下转轮振动特性无法快速评估的难题。