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借助可视化实验装置对离心泵和诱导轮内部汽蚀空泡的产生和发展情况进行了观测。实验发现,随着流量的增大,离心泵内汽蚀空泡区受离心力作用会逐渐向下游移动,极易造成流道的阻塞,这将对泵的性能产生较大影响。诱导轮中的汽蚀空泡被压控在轮缘和前缘附近,对流道内部的流动影响较小。轴流诱导轮内的汽蚀发展情况揭示了其具有较高杭汽蚀能力的机理。
The appearance and development of cavitation cavitation in centrifugal pump and inducer were observed by means of visual experimental equipment. The experimental results show that with the increase of flow rate, the cavitation area in the centrifugal pump will gradually move downstream due to the centrifugal force, which will easily cause blockage of the flow passage, which will greatly affect the performance of the pump. Cavitation cavitation bubbles in the inducer are pressure-controlled near the rim and the leading edge, and have little effect on the flow inside the runner. The development of cavitation in the axial inducing wheel reveals the mechanism of its high cavitation ability.