BREAKUP OF A DROPLET IN A HIGH-INTENSITY SOUND FIELD
BREAKUP OF A DROPLET IN A HIGH-INTENSITY SOUND FIELD
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DOI：
10.1121/1.404392
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发表时间：
1992-11-01
影响因子：
2.4
通讯作者：
MIRONOV, MA
中科院分区：
文献类型：
--
作者：
DANILOV, SD;MIRONOV, MA
对小液滴在强超声场中的雾化进行了理论研究。描述了三个主要阶段，包括液滴的平坦化，液滴边缘小尺度扰动的增长以及液滴表面毛细波的参数增长。小尺度不稳定性导致微米级雾化液体的形成，而参数不稳定性导致液滴破碎成较大的碎片，形成粗颗粒。确定了不稳定率，并讨论了它们与声级、频率和液滴参数的关系。
Atomization of a small droplet in an intense ultrasonic field is studied theoretically. Three main stages are described including the flattening of the droplet, the growth of small-scale disturbances at its edge, and the parametric growth of capillary waves on its surface. The small-scale instabilities are responsible for the formation of the micron-size fraction of atomized liquid while the parametric instabilities cause the breakup of the droplet into relatively large fragments that form the coarse fraction. The rates of instabilities are determined and their dependences upon sound level, frequency, and parameters of the droplet are discussed.