Spreading dynamics of drop impacts
Spreading dynamics of drop impacts
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DOI：
10.1017/jfm.2012.431
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发表时间：
2012-12-25
影响因子：
3.7
通讯作者：
Petitjeans, Philippe
中科院分区：
文献类型：
--
作者：
Lagubeau, Guillaume;Fontelos, Marco A.;Petitjeans, Philippe
我们提出了一个实验研究液滴冲击固体表面上的蔓延制度，没有飞溅。利用时空分辨傅里叶变换轮廓术技术，我们可以跟踪液滴形状在撞击过程中的演变。我们发现，一个自相似的动力学制度驱动的下降蔓延，直到从基板的粘性边界层的增长选择一个剩余的最小膜厚度最后，我们讨论了毛细管和粘性效应之间的相互作用的传播动力学，这表明了一个相关的影响参数。
We present an experimental study of drop impact on a solid surface in the spreading regime with no splashing. Using the space time-resolved Fourier transform profilometry technique, we can follow the evolution of the drop shape during the impact. We show that a self-similar dynamical regime drives the drop spreading until the growth of a viscous boundary layer from the substrate selects a residual minimal film thickness Finally, we discuss the interplay between capillary and viscous effects in the spreading dynamics, which suggests a pertinent impact parameter.