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On the mechanism of dendritic fragmentation by ultrasound induced cavitation
Ultrasonics Sonochemistry ( IF 8.7 ) Pub Date : 2018-10-25 , DOI: 10.1016/j.ultsonch.2018.10.031
S. Wang , Z.P. Guo , X.P. Zhang , A. Zhang , J.W. Kang

A dedicated solidification device and high speed camera were used to capture dendritic fragmentation of pure succinonitrile (SCN) induced by oscillating ultrasonic bubbles. Theoretical analysis of the melting behavior of the dendrite was performed based on local solidification thermodynamics. The dendritic growth or the evolution of the solid-liquid interface is closely related to both thermodynamics of the cavitation bubble and the local geometry of the dendrite. Accordingly, for the first time, a dimensionless scaling formulation was developed by fitting both theoretical and experimental data to determine the variational pressure exerted by the cavitation bubble.



中文翻译:

超声空化作用引起树突破碎的机理

使用专用的固化设备和高速相机捕获由振荡超声波气泡引起的纯琥珀腈(SCN)的树枝状断裂。基于局部凝固热力学对枝晶的熔融行为进行了理论分析。枝晶的生长或固液界面的演变与空化气泡的热力学和枝晶的局部几何形状都密切相关。因此,这是第一次,通过拟合理论和实验数据来确定空化气泡所施加的变化压力,从而开发出了无因次结垢配方。

更新日期:2019-03-12
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