摘要
提出了激光空泡溃灭的简单计算模型。在确定初始状态时考虑并减去整个溃灭过程中的热传导和水蒸气在空泡壁面的凝结与蒸发因素,这样在计算过程中空泡内的水蒸气质量不变,同时考虑了整个溃灭过程中水的可压缩性。研究了半径1 mm激光空泡的溃灭过程。空泡壁的最大溃灭速度可达1172.8 m/s,空泡中心的最高压强可达8.8728×108Pa,最高温度11038 K,最小半径15μm。该模型简单实用,激光空泡初始条件的确定,为研究激光空泡与弹塑性固体壁面的相互作用打下了基础。
A simple model of laser induced bubble collapse is proposed. When the initial phase is determined the values of thermal diffusion and mass diffusion of the bubble are considered and subtracted, and so the mass of water vapor remains uniform through the whole collapse process. The compression of water around the bubble is also considered. The bubble radius of lmm is investigated. The maximum collapsing velocity is 1172.8 m/s,the maximum pressure in bubble center is 8. 8728 × 10^8 Pa,and the minimum radius is 15 μm. The model is simple and practical,and the initial conditions of the bubble can be used in the research of the interaction between the elastoplasticity solid wall and the laser induced bubble.
出处
《激光与红外》
CAS
CSCD
北大核心
2009年第8期821-824,共4页
Laser & Infrared
基金
预研基金项目(No.51400010105JB1101)
预研重点基金项目(No.9140A14060207JB11)资助
关键词
激光
空泡
溃灭
数值计算
laser
bubble
collapse
numerical calculation
