| 单液滴撞击球形表面的涂覆效果 |
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| 引用本文： | 徐庆,李占勇,王瑞芳,朱曙光.单液滴撞击球形表面的涂覆效果[J].天津科技大学学报,2013(1):50-54. |
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| 作者姓名： | 徐庆 李占勇 王瑞芳 朱曙光 |
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| 作者单位： | 天津科技大学机械工程学院 |
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| 基金项目： | 国家高技术研究发展计划(863计划)项目(2012AA021303) |
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| 摘 要： | 液滴与球形表面的碰撞为喷雾包衣等工程应用的基础．以单液滴与球形光滑表面为研究对象，采用高速相机，分析了在液滴不同撞击速度（0．88～4．43m／s）和不同直径的球面（5～15mm）实验条件下涂覆率的变化．研究了液滴与球面发生碰撞时发生的铺展震荡、涂覆球面、破碎飞溅现象．最后，建立了K值、球面直径与碰撞现象之间的关系图，为理论分析和数值模拟提供依据．
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| 关 键 词： | 单液滴 撞击速度 球形表面 涂覆 |
Coating and the Impact of Single Droplet on the Spherical Surface |
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| XU Qing,LI Zhanyong,WANG Ruifang,ZHU Shuguang.Coating and the Impact of Single Droplet on the Spherical Surface[J].Journal of Tianjin University of Science & Technology,2013(1):50-54. |
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| Authors: | XU Qing LI Zhanyong WANG Ruifang ZHU Shuguang |
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| Institution: | (College of Mechanical Engineering,Tianjin University of Science & Technology,Tianjin 300222,China) |
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| Abstract: | Droplet-spherical surface collision is a fundamental issue in the application of spray coating. Under the experi- mental conditions of different impact velocity（0.88-4.43 m/s）and different outer diameters of the spherical surface（5- 15 mm）, the impact of a single droplet on a spherical surface at room temperature was investigated by analyzing the changes of coating with the help of a high-speed camera. When contacting the spherical surface, the droplet spreads, retracts, relaxes or splashes on the surface. Consequently, the relationship between the K value, sphere diameter and impacting phenomena was established for theoretic analysis and numerical simulation. |
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| Keywords: | single droplet impacting velocity spherical surface coating |
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