Study on the Effect of Inlet Fluctuation on Cavitation in a Cone Flow Channel

作者：Liu Hai; Cao Shuping; Luo Xiaohui^*

来源：Journal of Fluids Engineering-Transactions of the ASME, 2015, 137(5): 051301.

DOI：10.1115/1.4029080

• cavitation cloud
• cavitation bubble
• inlet fluctuation
• collapse pressure

A mathematical method was conducted to investigate the mechanism of formation of cavitation cloud, while the inlet stream contains a fluctuating flow. Based on the Rayleigh-Plesset equation and the static pressure distribution in a cone flow channel, parameters related to cavitation cloud are estimated, and the collapse pressure of the cavitation cloud is obtained by solving the equation of Morch's model. Moreover, the effect of the amplitude and frequency of inlet fluctuation on cavitation is studied. Results revealed that the smaller the amplitude, the smaller the cloud and the lower the collapse pressure. And frequency of fluctuating stream was found to have a relative great effect on frequency of peak pressure but not so significant on peak collapse pressure and size of cloud. It is concluded that limiting the inlet fluctuation reduces the erosion and noise generated by cavitation collapse.

• 出版日期2015-5
• 单位华中科技大学