| 马慧敏,刘长根*,李旭,房河宇,董娇娇.液滴冲击液面过程中变形特征的实验研究[J].实验力学,2019,34(4):600~608 |
| 液滴冲击液面过程中变形特征的实验研究 |
| Experimental study of deformation characteristics during the process of liquid drop impact liquid surface |
| 投稿时间：2018-01-18 修订日期：2018-03-20 |
| DOI：10.7520/1001-4888-18-016 |
| 中文关键词: 液滴 冲击 次生液滴 次生液柱 |
| 英文关键词:liquid drop impact secondary droplet secondary liquid column |
| 基金项目:国家重点研发计划，课题编号： 2018YFD0900704 |
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| 中文摘要: |
| 用高速相机拍摄了液滴以不同速度冲击液面的运动过程，测量了冲击过程中典型时刻液坑、中心液柱、次生液滴和次生液柱的几何尺寸，对这些几何尺寸的最大值与韦伯数(We)的关系进行了回归分析，结果表明：空间上，液坑的最大垂直深度、液坑的最大水平长度、中心液柱的最大高度、次生液滴等效直径和次生液柱的最大高度随We数增加呈线性增加；次生液滴等效直径是初始液滴等效直径的1.2~2倍；当200 |
| 英文摘要: |
| The motion process of liquid drop impact liquid surface at different velocities was photographed by a high-speed camera. Geometric dimensions including the crater, central liquid column, secondary droplet and the secondary liquid column were measured at typical moments during the impact. The regression analysis of relationship between the maximum value of these geometric dimensions and Weber number (We) was carried out. Results show that in space, the maximum vertical depth of liquid crater, the maximum horizontal length of liquid crater, the maximum height of central liquid column, the equivalent diameter of the secondary droplet, and the maximum height of the secondary liquid column increase linearly with the increase of Weber number. The equivalent diameter of the secondary droplets are larger than the equivalent diameter of the initial liquid drop by 1.2~2 times. When 200 |
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