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不同环境压强下激光空泡溃灭射流的实验研究

李贝贝 张宏超 倪晓武 陆建

引用本文:
Citation:

不同环境压强下激光空泡溃灭射流的实验研究

    作者简介: 李贝贝(1984- ),男,博士研究生,现主要从事激光与材料物质相互作用的研究。.
    通讯作者: 陆建, lj6805@163.com
  • 基金项目:

    南京理工大学自主科研专项计划资助项目(2010ZDJH09)

  • 中图分类号: O434.14

Experiment investigation on the liquid jet of laser-induced bubble in different ambient pressures

    Corresponding author: LU Jian, lj6805@163.com
  • CLC number: O434.14

  • 摘要: 为了研究环境压强对固壁面附近激光空泡溃灭射流的影响,采用光偏转方法对固体壁面附近空泡溃灭行为进行了实验研究,得到了不同环境压强下空泡的溃灭时间、溃灭射流冲击压强。结果表明,相同激光能量下,环境压强对空泡溃灭时间、射流冲击压强都有非线性的影响关系,环境压强越大,溃灭时间越小,射流冲击压强越大;在空泡溃灭的前期,泡壁加速率较小且受环境压强的影响较小;在溃灭的后期,射流形成,空泡上表面泡壁中心点速率迅速增大,且相应阶段的加速率随着环境压强的增大而增大。这一结果对激光水下加工及空泡动力学的研究有积极的意义。
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出版历程
  • 收稿日期:  2012-02-29
  • 录用日期:  2012-04-05
  • 刊出日期:  2012-11-25

不同环境压强下激光空泡溃灭射流的实验研究

    通讯作者: 陆建, lj6805@163.com
    作者简介: 李贝贝(1984- ),男,博士研究生,现主要从事激光与材料物质相互作用的研究。
  • 1. 南京理工大学理学院信息物理与工程系, 南京210094
基金项目:  南京理工大学自主科研专项计划资助项目(2010ZDJH09)

摘要: 为了研究环境压强对固壁面附近激光空泡溃灭射流的影响,采用光偏转方法对固体壁面附近空泡溃灭行为进行了实验研究,得到了不同环境压强下空泡的溃灭时间、溃灭射流冲击压强。结果表明,相同激光能量下,环境压强对空泡溃灭时间、射流冲击压强都有非线性的影响关系,环境压强越大,溃灭时间越小,射流冲击压强越大;在空泡溃灭的前期,泡壁加速率较小且受环境压强的影响较小;在溃灭的后期,射流形成,空泡上表面泡壁中心点速率迅速增大,且相应阶段的加速率随着环境压强的增大而增大。这一结果对激光水下加工及空泡动力学的研究有积极的意义。

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