Evaluation and interpretation of bubble size distributions in pulsed megasonic fields
Evaluation and interpretation of bubble size distributions in pulsed megasonic fields
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DOI：
10.1063/1.4803858
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发表时间：
2013-05
影响因子：
3.2
通讯作者：
M. Hauptmann;H. Struyf;S. Gendt;C. Glorieux;S. Brems
中科院分区：
文献类型：
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作者：
M. Hauptmann;H. Struyf;S. Gendt;C. Glorieux;S. Brems
声空化的发生是一个相互依赖的影响，强烈依赖于气泡的大小。因此，气泡尺寸控制对于依赖于声空化的生物和工业过程将是有益的。脉冲声场可以导致气泡尺寸控制以及潜在活性气泡的反复溶解和再活化（“再循环”）。因此，脉冲场可以强烈地增强空化活性。在本文中，我们提出了一种改进的方法，通过结合空化噪声测量和超声脉冲的活性气泡尺寸分布的评价。这种改进方法的关键组成部分是对尺寸上限的定义，低于该上限，在随后的脉冲之间的气泡必须溶解，以便可持续地回收。这一上限使得有可能解释和链接到气泡尺寸分布的空化活动的增强。实验确定的…
The occurrence of acoustic cavitation is incorporating a multitude of interdependent effects that strongly depend on the bubble size. Therefore, bubble size control would be beneficial for biological and industrial processes that rely on acoustic cavitation. A pulsed acoustic field can result in bubble size control and the repeated dissolution and reactivation (“recycling”) of potentially active bubbles. As a consequence, a pulsed field can strongly enhance cavitation activity. In this paper, we present a modified methodology for the evaluation of the active bubble size distribution by means of a combination of cavitation noise measurements and ultrasonic pulsing. The key component of this modified methodology is the definition of an upper size limit, below which bubbles—in between subsequent pulses—have to dissolve, in order to be sustainably recycled. This upper limit makes it possible to explain and link the enhancement of cavitation activity to a bubble size distribution. The experimentally determined...