激光技术2012，Vol.36Issue(6)：749-753,5.DOI:10.3969/j.issn.1001-3806.2012.06.010
不同环境压强下激光空泡溃灭射流的实验研究
Experiment investigation on the liquid jet of laser-induced bubble in different ambient pressures
摘要
Abstract
In order to study effect of ambient pressure on the liquid jet of laser-induced bubbles, the collapse time and the water hammer pressure of the liquid jet were obtained after studying the collapse action of the bubbles by means of a fiber-optic diagnostic technique based on probe beam deflection (PBD) in experiments. The data indicate that the collapse time decreases nonlinearly with the ambient pressure increasing, and the water hammer pressure increases nonlinearly with the ambient pressure increasing. At the initial stage of the collapse stage, the acceleration of the bubble wall and the effect of the ambient pressure on the acceleration are very small; at the final stage of the collapse stage, the velocity of the center of the top bubble wall increases very quickly, and the acceleration increases with the ambient pressure increasing at the same stage. It' s helpful to underwater laser processing and study about cavitation bubble dynamics.关键词
激光物理/激光空泡/光偏转法/液体射流/水锤Key words
laser physics/ laser-induced bubble/ optical beam deflection/ liquid jet/ water hammer分类
数理科学引用本文复制引用
李贝贝,张宏超,倪晓武,陆建..不同环境压强下激光空泡溃灭射流的实验研究[J].激光技术,2012,36(6):749-753,5.基金项目
南京理工大学自主科研专项计划资助项目(2010ZDJH09) （2010ZDJH09）
