关键词: 射流干涉, 旋转水斗, 多喷嘴, 冲击式水轮机, 数值解析

Abstract:

The discretization in time and space domains of the unsteady water flow in a rotating bucket of Pelton turbine is carried out using animated cartoon frames. Then , by applying Lagrangean approach to the movement calculation of the flow particles in each discrete frame , the unsteady water sheet flow in a rotating bucket is simulated. Moreover , by superimposing the result of flow analysis under the second jet on the one under the first jet , the jet interference in a bucket is numerically verified. Based on the comparison between the numerical prediction results of the jet interference in a bucket with the photograph of visual observation taken by the model test , it is finally confirmed that the water sheet flow interference is practically the same.

Key words: jet interference, rotating bucket, multi -nozzle, Pelton turbine, numerical simulation