Roles of vaporization and thermal decomposition in the dynamic evolution of laser-induced bubble on the surface of a submerged metal plate

被引:1
|
作者
Yuan, Xin [1 ,2 ]
Duan, Wenqiang [1 ,2 ]
Wang, Kedian [1 ,2 ]
Wang, Wenjun [1 ,2 ]
Fan, Zhengjie [1 ,2 ]
Lv, Jing [2 ,3 ]
Mei, Xuesong [1 ,2 ]
机构
[1] Xi An Jiao Tong Univ, Sch Mech Engn, 28 West Xianning Rd, Xian 710049, Shaanxi, Peoples R China
[2] Xi An Jiao Tong Univ, State Key Lab Mfg Syst Engn, 99 Yanxiang Rd, Xian 710054, Shaanxi, Peoples R China
[3] Northwestern Polytech Univ, Sch Artificial Intelligence Opt & Elect iOPEN, Xian 710072, Peoples R China
来源
OPTICS EXPRESS | 2024年 / 32卷 / 09期
基金
中国国家自然科学基金;
关键词
CONTROLLABLE GENERATION; HYDROGEN-PRODUCTION; MICRO-BUBBLES; LIQUID WATER; ABLATION; GROWTH;
D O I
10.1364/OE.521849
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
This paper aims to explain when the vaporization or thermal decomposition prevails during laser-induced bubble growth and how they influence bubble morphology. Bubbles were generated by irradiating a 304 stainless steel plate submerged in degassed water using millisecond lasers with a pulse width of 0.4 ms and powers of 1.6 kW and 3.2 kW, respectively. The dynamic evolution of bubbles was recorded by a high-speed camera. Moreover, the numerical models were developed to obtain a vaporization model and a decomposition model by incorporating the source terms due to the vaporization and decomposition mass fluxes into the governing equations, respectively. The simulated dynamic bubble evolution is consistent with the experimental results. When the laser power is 1.6 kW, a thin-layer bubble is formed, which gradually shrinks and eventually disappears after the laser stops irradiating. When the laser power is 3.2 kW, a spherical bubble is formed, and its volume decreases significantly after the laser stops irradiating. Subsequently, it remains relatively stable during the observation period. The fundamental reason for the difference between the bubble morphologies obtained from the vaporization model and the decomposition model lies in the presence of a condensation zone in the gas phase. When water vaporization or thermal decomposition dominates, the temperatures obtained from the models align with the decomposition ratios at varying temperatures reported in the literature. Our findings are significant for understanding the dynamic behavior of bubbles, with implications for various laser processing underwater.
引用
收藏
页码:15691 / 15709
页数:19
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