水利学报2017，Vol.48Issue(2)：127-134,8.DOI:10.13243/j.cnki.slxb.20160449
自由液面附近空化泡的溃灭特性
Collapse characteristics of the cavitation bubble near free surface
摘要
Abstract
Study of collapse characteristics of the cavitation bubble near free surface has important significance in knowing cavitation erosion mechanism in water conservancy and hydropower project.To further understanding collapse characteristics of the cavitation bubble near free surface,experiments the spark-induced cavitation bubbles were carried out and the results show that:(1) Cavitation bubbles near free surface always deviate from the free surface when collapsing,the critical condition of deviating from the free surface is that the distance between the cavitation bubble and the free surface is about five times of the maximum radius of the cavitation bubble.The larger the size of the cavitation bubble or the closer the cavitation bubble away from the free surface,the more obvious the phenomenon will be.(2) Double cavitation bubbles near free surface collapse towards each other and fuse together and the fusion body deviates from the free surface.(3) Under the influence of the free surface and the air bubble,the direction of collapse of the cavitation bubble is vector sum of the respective effect of the free surface and the air bubble.A quantitative knowledge of cavitation bubbles near free surface was developed in this study and collapse directions of cavitation bubbles could be predicted under certain conditions.关键词
空化泡/自由液面/空气泡/溃灭特性/溃灭方向Key words
cavitation bubble/free surface/air bubble/collapse characteristics/direction of collapse分类
建筑与水利引用本文复制引用
张亚磊,许唯临,张祺,翟俨伟..自由液面附近空化泡的溃灭特性[J].水利学报,2017,48(2):127-134,8.基金项目
国家重点基础研究计划973计划项目(2013CB035905) （2013CB035905）
国家自然科学基金项目(51179114) （51179114）
