黑龙江科技大学学报2025，Vol.35Issue(1)：78-83,6.DOI:10.3969/j.issn.2095-7262.2025.01.012
自激脉冲空化水射流空泡云特性试验研究
Experimental study on cavitation cloud characteristics behind self-excited pulsed cavitation water jet
摘要
Abstract
Cavitation cloud is one of the important methods to characterize the cavitation performance of cavitation water jets.In order to obtain the characteristics behind the cavitation water jet bubble cloud formed by the self-excited pulsed cavitation nozzle designed based on the organ pipe resonance principle and the shear flow cavitation mechanism,the study is focused on the efforts to investigate the dynamic characteristics of the self-excited pulsed cavitation water jet bubble cloud by using the visualization test method;photograph the changing images of the self-excited pulsed cavitation water jet bubble cloud under different inlet pressures in the submerged state over time with high-speed camera technology;and analyze the dynamic evolution process of initiation,development,shedding and collapse of the bubble cloud by u-sing the image analysis method of the original image,grayscale map and FDM map.The results show that the macro-morphology of the cavitation water jet bubble cloud is good under the submerged state,and the range of the collapsed target distance,the cavitation period,and the maximum width and the maximum length of the bubble cloud in the bubble cloud cluster all increase with the increase of the inlet pressure to different degrees with better collectivity of the jet and wider effective range,as which can meet the re-quirements of high-frequency impact loading on the target.关键词
自激脉冲/空化水射流/高速摄像/空泡云/图像分析Key words
self-excited pulse/cavitation water jet/high speed camera/cavitation cloud/image a-nalysis分类
机械工程引用本文复制引用
董星,李雪堂,王涛,陈吉烽..自激脉冲空化水射流空泡云特性试验研究[J].黑龙江科技大学学报,2025,35(1):78-83,6.基金项目
国家自然科学基金项目(52075151) （52075151）
