Axisymmetric explosions in a liquid microjet induced by co-axial nanosecond laser

IF 3.8 2区工程技术 Q1 MECHANICS International Journal of Multiphase Flow Pub Date : 2025-07-01 Epub Date: 2025-02-25 DOI:10.1016/j.ijmultiphaseflow.2025.105182

Qisheng Chen , Tianqi Zhai , Chenghao Xu , Bingyang Liu , Huihui Xia , Weiwei Deng , Xinyan Zhao , Yanchu Liu

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Abstract

We report an experimental investigation on the explosion of a liquid microjet induced by nanosecond laser. The jet is periodically perturbed by a piezoelectric actuator to generate highly controllable jet pinch-off. The laser is introduced co-axially and propagates through the liquid jet by total internal reflections. The pinch-off region serves as a light funnel to confine and concentrate the laser beam, and the optical power flux may exceed the threshold to induce plasmas and explosions. The explosive phenomenon evolves over four different time scales spanning from 10 ns to

100 μ s

. The growth of the explosion gap follows power laws behavior , while the growth of the mist cloud diameter remains linear with respect to time, both of which can be described by models relating plasma volume to deposited energy.

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同轴纳秒激光诱导液体微射流中的轴对称爆炸

本文报道了纳秒激光诱导液体微射流爆炸的实验研究。射流由压电致动器周期性扰动，产生高度可控的射流掐断。激光同轴引入，通过全内反射在液体射流中传播。掐断区作为光漏斗限制和集中激光束，光功率通量可能超过阈值而诱发等离子体和爆炸。爆炸现象在从10纳秒到100μs的四个不同的时间尺度上演变。爆炸间隙的增长遵循幂律行为，而雾云直径的增长与时间保持线性关系，两者都可以用等离子体体积与沉积能量的关系模型来描述。

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来源期刊

International Journal of Multiphase Flow 物理-力学

CiteScore

7.30

自引率

10.50%

发文量

244

审稿时长

4 months

期刊介绍： The International Journal of Multiphase Flow publishes analytical, numerical and experimental articles of lasting interest. The scope of the journal includes all aspects of mass, momentum and energy exchange phenomena among different phases such as occur in disperse flows, gas–liquid and liquid–liquid flows, flows in porous media, boiling, granular flows and others. The journal publishes full papers, brief communications and conference announcements.