Computational Simulation of Sodium Doublet Line Intensities in Multibubble Sonoluminescence

被引：0

作者：

梁金福 ^{[1
,2
]}

安宇 ^{[3
]}

陈伟中 ^{[4
]}

机构：

[1] School of Physics and Electronic Science, Guizhou Normal University

[2] Key Laboratory of Radio Astronomy of Guizhou Province

[3] Department of Physics, Tsinghua University

[4] Institution of Acoustics, Nanjing University

来源：

Chinese Physics Letters | 2019年 / 36卷 / 10期

关键词：

D O I：

暂无

中图分类号：

O351.2 [流体动力学];

学科分类号：

080704 ;

摘要：

We perform a computational simulation of the fluid dynamics of sodium doublet(Na-D)line emissions from one sonoluminescing bubble among the cavitation bubbles in argon-saturated Na hydroxide(NaOH)aqueous solutions.Our simulation includes the distributions of acoustic pressures and the dynamics of cavitation bubbles by numerically solving the cavitation dynamic equation and bubble-pulsation equation.The simulation results demonstrate that when the maximum temperature inside a luminescing bubble is relatively low,two emission peaks from excited Na are prominent within the emission spectra,at wavelengths of 589.0 and 589.6 nm.As the maximum temperature of the bubble increases,the two peaks merge into one peak and the full width at half maximum of this peak increases.These calculations match with the observations of Na-D line emissions from MBSL occurring in aqueous solutions of NaOH under an argon gas.

引用

页码：123 / 126

页数：4