Cavitation bubbles collapse characteristics behind a convex body

作     者：李瑶 许唯临 张亚磊 张敬威 陈春祺 阿蓉 LI Yao;XU Wei-lin;ZHANG Ya-lei;ZHANG Jing-wei;CHEN Chun-qi;Arong

作者机构：State Key Laboratory of Hydraulics and Mountain River EngineeringSichuan University 

出 版 物：《Journal of Hydrodynamics》 (水动力学研究与进展B辑（英文版）)

年 卷 期：2013年第25卷第6期

页      面：886-894页

核心收录：

学科分类：080103[工学-流体力学] 08[工学] 080104[工学-工程力学] 081502[工学-水力学及河流动力学] 0815[工学-水利工程] 0801[工学-力学（可授工学、理学学位）] 

基　　金：Project supported by the Natural Science Foundation of China(Grant No.51179114) the National Basic Research Development Program of China(973 Program,2013CB035905) 

主　　题：convex body cavitation bubble collapse high speed camera cavitation noise 

摘      要：Cavitation bubbles behind a convex body were experimentally studied by a high speed camera and a hydrophone synchronously. The experiments were conducted in a circulating water tunnel with five various contraction ratios： β = 0.497, β= 0.6, β= 0.697, β= 0.751, and β= 0.799. The distributions of the cavitation bubble collapse positions behind the five different convex bodies were obtained by combining the images taken by the high speed camera. According to the collapse positions, it was found that no cavitation bubble was collapsed in the region near the wall until the ratio of the water head loss over the convex body height was larger than 20, which can be used to predict if the cavitation damage would occur in the tunnel with orifice energy dissipaters.