The acoustic signature of bubbles fragmenting in sheared flow.
The acoustic signature of bubbles fragmenting in sheared flow.
复制标题
剪切流中气泡破碎的声学特征。
DOI：
10.1121/1.2364466
复制
发表时间：
2006
期刊：
影响因子：
--
通讯作者：
M. D. Stokes
中科院分区：
文献类型：
--
作者：
G. Deane;M. D. Stokes
对流体剪切中气泡破碎声的测量结果进行了分析。已确定的频率，振幅和衰减率的声发射从1.8毫米半径的气泡之间的相对的流体射流破碎。观察到宽频带（1.8至30 kHz），峰值压力振幅在0.03至2 Pa的范围内。虽然峰值压力振幅没有显示出显着的缩放与频率，衰减率的频率依赖性是一致的热和声辐射损失的总和。
Measurements of the sound of bubbles fragmenting in fluid shear are presented and analyzed. The frequency, amplitude, and decay rate of the acoustic emissions from 1.8-mm-radius bubbles fragmenting between opposed fluid jets have been determined. A broad band of frequencies (1.8 to 30 kHz) is observed with peak pressure amplitudes in the range of 0.03 to 2 Pa. While the peak pressure amplitudes show no significant scaling with frequency, the frequency dependence of the decay rates is consistent with the sum of thermal and acoustic radiation losses.