The present experimental study focuses on hydrodynamic cavitation in a transparent horizontal convergent-divergent nozzle. In the experimental section, flow first occurs through a nozzle with a half convergent angle of 21° and then a divergent angle of 8° to exit. The static pressure and the flow rate are varied to achieve different cavitation numbers in sheet mode. Pressure fluctuations are measured at three different locations in the test section of the nozzle and analyzed. Images of the cavities at the throat section are captured, and the average cavity length is measured for all cavitation numbers in sheet mode. The cavity dynamics variation with time is analyzed with the help of image captured using a high-speed camera. The study confirms that the cavitation number and average cavity length are exponentially inversely proportional. Pressure fluctuations and their corresponding frequency are obtained for the different stages of cavitation. The experimental findings show that the sheet cavitation stage is the most turbulent and the magnitude of pressure fluctuations gets smaller as the cavity volume increases.

目前的实验研究集中在透明水平收敛-发散喷嘴中的流体动力空化。在实验部分中，流首先通过具有22°的一半会聚角，然后是8°的发散角的喷嘴流出来。改变静压力和流速以在片材模式下获得不同的气穴数。在喷嘴的测试部分的三个不同位置测量压力波动并进行分析。在喉部截取空洞的图像，并以片状模式测量所有空洞数的平均空洞长度。利用高速相机拍摄的图像可以分析腔体动力学随时间的变化。研究证实，空化数与平均腔长成指数反比。对于空化的不同阶段，可以获得压力波动及其相应的频率。实验结果表明，片状气蚀阶段是最湍流的，并且随着腔体积的增加，压力波动的幅度变小。