| 液滴撞击固体表面铺展特性的实验研究 |
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| 引用本文： | 毕菲菲,郭亚丽,沈胜强,陈觉先,李熠桥.液滴撞击固体表面铺展特性的实验研究[J].物理学报,2012,61(18):184702-184702. |
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| 作者姓名： | 毕菲菲 郭亚丽 沈胜强 陈觉先 李熠桥 |
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| 作者单位： | 大连理工大学能源与动力学院,辽宁省海水淡化重点实验室,大连116024 |
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| 基金项目： | 国家自然科学基金(批准号: 50976016, 51176017)资助的课题. |
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| 摘 要： | 利用高速摄影仪记录了不同液滴撞击固体表面的形态变化过程, 并探讨了液滴撞击参数对撞击过程液滴形态的影响. 结果表明: 液滴黏度对液滴铺展过程起着决定性作用, 液滴表面张力对液滴铺展后的回缩起到主导作用, 两者的共同作用决定着液滴的震荡特性; 撞击速度的提高会增大液滴的最大铺展因子, 但达到最大铺展的时间因表面张力的不同呈现不同变化规律.
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| 关 键 词： | 液滴 撞击 铺展 表面张力 |
| 收稿时间： | 2011-12-20 |
Experimental study of spread characteristics of droplet impacting solid surface |
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| Bi Fei-Fei,Guo Ya-Li,Shen Sheng-Qiang,Chen Jue-Xian,Li Yi-Qiao.Experimental study of spread characteristics of droplet impacting solid surface[J].Acta Physica Sinica,2012,61(18):184702-184702. |
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| Authors: | Bi Fei-Fei Guo Ya-Li Shen Sheng-Qiang Chen Jue-Xian Li Yi-Qiao |
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| Institution: | Key Laboratory of Ocean Energy Utilization and Energy Conservation of Ministry of Education, School of Energy and Power Engineering, Dalian University of Technology, Dalian 116024, China |
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| Abstract: | The processes of different droplets impacting the solid surface are recorded using a high-speed digital came and the effects of the impact parameters on the droplet impact are studied. The results show that the viscosity of droplet plays a decisive role in spreading process, and surface tension has a leading influence on recoiling process. These two factors jointly determine the oscillation characteristics. The maximum spread factor increases with impact velocity increasing, however, the time from the beginning to achieve the maximum spreading factor shows different variation rules due to surface tension. |
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| Keywords: | droplet impact spread surface tension |
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