Effects of Bjerknes forces on gas-filled microbubble trapping by ultrasonic waves
Effects of Bjerknes forces on gas-filled microbubble trapping by ultrasonic waves
复制标题
Bjerknes 力对超声波捕获充气微泡的影响
DOI：
10.1143/jjap.40.3852
复制
发表时间：
2001
影响因子：
1.5
通讯作者：
N. Masuda
中科院分区：
文献类型：
--
作者：
Y. Yamakoshi;Y. Ozawa;M. Ida;N. Masuda
当充满气体的微泡流入超声波场时，微泡与超声波相互作用并聚集成大块气泡。这些气泡被超声波捕获到周围的液流中。本文从理论和实验的角度对超声波场捕获微气泡进行了讨论。同时考虑了超声波二次毕克尼斯力引起的微泡聚集和超声波一次毕耶克尼斯力引起的微泡捕获。使用对应平均直径为 20 µm 和 1.3 µm 的两种不同类型的充气微泡来观察超声波场内微泡的动力学。
When gas-filled microbubbles flow into an ultrasonic wavefield, the microbubbles interact with the ultrasonic waves and aggregate into large masses of bubbles. Those bubbles are trapped against the surrounding liquid flow by ultrasonic waves. In this paper, the microbubble trapping by an ultrasonic wavefield are discussed both from theoretical and experimental viewpoints. Both, the microbubble aggregation by ultrasonic-wave secondary Bjerknes force and the microbubble trapping by ultrasonic-wave primary Bjerknes force are considered. The dynamics of microbubbles inside an ultrasonic wavefield are observed using two different types of gas-filled microbubbles with corresponding mean diameters of 20 µm and 1.3 µm.