摘要
采用激光技术聚焦击穿液体产生空泡,利用高速摄像系统开展激光空泡与自由液面的相互作用的实验研究。实验研究发现,空泡与自由液面之间的无量纲距离对水下空泡的脉动特性和自由液面的水冢现象存在影响。通过大量实验总结了无量纲距离与空泡半径、空泡脉动周期、自由液面水柱的最大高度和产生水冢时间的相互关系。实验表明无量纲距离越小,空泡脉动周期越短,自由面的水冢现象越明显。同时统计出了在不同无量纲距离范围内所出现的5种不同水冢现象的规律。研究内容为空泡与自由液面相互作用的理论提供了实验依据。
The subject in the study of the characteristic and interaction about the bubble occuring near a free liquid surface of water is carried out by the method of laser-generated cavitation bubble and high speed camera system. The experimental results indicate that the dimensionless distance between the bubble and free surface affects the bubble motion and plume of water. The summary of the relation between the dimensionless distance and the maximum radius, period of motion, the height of water column and the time of the plume of water are provided. There are five different plumes for different dimensionless distances. It provides an experimental reference to the research on the interaction of the bubble and free liquid surface.
出处
《光学学报》
EI
CAS
CSCD
北大核心
2012年第7期154-160,共7页
Acta Optica Sinica
基金
国家自然科学基金(51109217)
武器装备预研重点基金项目(9140A14060207JB11)资助课题
关键词
激光技术
空泡运动
激光空泡
自由液面
水冢
laser technique
bubble motion
laser-generated bubble
free liquid surface
plume of water
