运用高速摄像、噪声分析等手段对不同阀口空化流场及流动特性进行了分析,高速摄相机采用微距放大模式进行观测,结合大量观测结果总结出阀口空化的典型特征,以及和阀腔内部压力分布的相关关系,在此基础上研究了阀口结构及流动参数对空化形态、流量与噪声特性的影响。 The use of high-speed camera, noise analysis and other means of different valve port cavitation flow field and flow characteristics were analyzed using high-speed camera macro mode amplification, combined with a large number of observations concluded that the typical characteristics of valve cavitation, and The pressure distribution inside the valve cavity, and on the basis of which the effect of the valve port structure and flow parameters on cavitation shape, flow rate and noise characteristics was studied.