Oscillating bubbles in ultrasonic acoustic field
Oscillating bubbles in ultrasonic acoustic field
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DOI：
10.1088/1742-6596/147/1/012015
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发表时间：
2009-02
期刊：
影响因子：
--
通讯作者：
K. Matsumoto;I. Ueno
中科院分区：
文献类型：
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作者：
K. Matsumoto;I. Ueno
振动气泡的行为是声空化研究的基础，在医学领域具有重要意义。如血管造影和肝癌的诊断。研究了多个气泡在超声波作用下的行为。将气泡从垂直毛细管注入静态水中，然后从上方向气泡施加20 kHz的超声波。气泡的振动运动被高速摄像机以高达45000 fps的帧速率捕获。实现了表面波的激励和不同模态数的形状振荡。气泡加速行为与气泡间距离之间的相关性。
Behavior of oscillating bubbles is of fundamental study for acoustic cavitations, and is of great importance for medical field. For example, angiographic and diagnosis of cancer of liver. We focused on behavior of multiple air bubbles exposed to ultrasonic wave. The bubbles were injected into the static water from a vertical capillary tube, and then the ultrasonic wave of 20 kHz was applied from above toward the bubbles. Vibrating motion of the bubbles was captured by a high-speed camera at frame rates up to 45000 fps. Excitations of surface wave and shape oscillation with distinct mode number were realized. Correlation between the accelerated bubble behavior and the bubble-bubble distance.