Inclined to splash: triggering and inhibiting a splash with tangential velocity
Inclined to splash: triggering and inhibiting a splash with tangential velocity
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DOI：
10.1088/1367-2630/11/6/063017
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发表时间：
2009-06-12
影响因子：
3.3
通讯作者：
Stone, Howard A.
中科院分区：
文献类型：
--
作者：
Bird, James C.;Tsai, Scott S. H.;Stone, Howard A.
当液滴撞击光滑、固体、干燥的表面时，液滴形成径向扩散的薄层，这可能导致飞溅。以前的研究几乎完全集中在垂直于表面的撞击上;然而，水滴撞击有角度或移动的表面是很常见的。这种碰撞的不对称性导致喷射边缘的方位角变化，并且在某些条件下，只有部分边缘破裂形成液滴。我们表明，切向分量的影响，可以采取行动，以提高或抑制飞溅。我们开发了一个新的模型来预测何时会发生这种类型的飞溅。该模型解释了切向速度的影响，并与以前的实验数据吻合得很好。
When a liquid drop impacts a smooth, solid, dry surface, the drop forms a radially spreading lamella, which can lead to a splash. Previous studies have focused almost exclusively on impacts perpendicular to a surface; yet it is common for drops to impact on angled or moving surfaces. The asymmetry of such impacts leads to an azimuthal variation of the ejected rim, and under certain conditions only part of the rim breaks up to form droplets. We show that the tangential component of impact can act to enhance or suppress a splash. We develop a new model to predict when this type of splashing will occur. The model accounts for our observations of the effects of tangential velocity and agrees well with previous experimental data.