[1]刘炫麟,王笑珊,赵殿伟,等.液滴撞击超疏水—亲水混合表面的动态行为特性[J].南京师范大学学报(工程技术版),2019,19(02):018.[doi:10.3969/j.issn.1672-1292.2019.02.003]
　Liu Xuanlin,Wang Xiaoshan,Zhao Dianwei,et al.Dynamic Behavioral Characteristics of Water Droplet Impacting onSuperhydrophobic-Hydrophilic Surface[J].Journal of Nanjing Normal University(Engineering and Technology),2019,19(02):018.[doi:10.3969/j.issn.1672-1292.2019.02.003]
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液滴撞击超疏水—亲水混合表面的动态行为特性
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南京师范大学学报（工程技术版）[ISSN:1006-6977/CN:61-1281/TN]

卷:
19卷
期数:
2019年02期
页码:
018
栏目:
能源与机械工程
出版日期:
2019-06-30

文章信息/Info

Title:
Dynamic Behavioral Characteristics of Water Droplet Impacting onSuperhydrophobic-Hydrophilic Surface
文章编号:
1672-1292(2019)02-0018-07
作者:
刘炫麟1; 王笑珊1; 赵殿伟1; 华君叶1; 2; 赵孝保1; 2; 李 栋1; 2
(1.南京师范大学能源与机械工程学院,江苏 南京 210042)(2.南京师范大学江苏省能源系统过程转化与减排技术工程实验室,江苏 南京 210042)
Author(s):
Liu Xuanlin1; Wang Xiaoshan1; Zhao Dianwei1; Hua Junye1; 2; Zhao Xiaobao1; 2; Li Dong1; 2
(1.School of Energy and Mechanical Engineering,Nanjing Normal University,Nanjing 210042,China)(2.Engineering Laboratory of Energy System Process Conversion and Emission Reduction Technology of Jiangsu Province,Nanjing Normal University,Nanjing 210042,China)
关键词:
超疏水表面; 液滴撞击; 动力行为; 可视化实验; 接触角
Keywords:
superhydrophobic surface; drop impacting; dynamic behavior; visual experiment; contact angle
分类号:
TK124
DOI:
10.3969/j.issn.1672-1292.2019.02.003
文献标志码:
A
摘要:
对液滴撞击普通表面、疏水表面、疏水—亲水混合表面的行为进行可视化观测,对比研究不同撞击表面的动力学特性,分析表面润湿性以及撞击速度对撞击行为的影响. 疏水部分接触角选取115°、135°和150°. 液滴撞击不同的表面,均会发生铺展、回缩、反弹或破碎行为. 液滴撞击疏水表面的速度越大,表面的铺展因子越大,但不会影响最大铺展时间(3 ms). 当液滴以2.43 m/s的速度撞击超疏水表面时,铺展因子可达3.43. 研究发现,液滴撞击超疏水—亲水混合表面未发生反弹,且撞击速度越大,接触角越大,液滴撞击产生的液指越多,断裂产生的次生小液滴越多. 结果表明,超疏水—亲水混合条纹可以减小单个液滴的体积,减少液滴的二次回弹.
Abstract:
The behavior of a single water droplet impacting on different surfaces is observed by high-speed camera,including bare surface,hydrophobic surface and hydrophobic-hydrophilic surface. Besides,the dynamic characteristics of droplet impacting on different surfaces are studied comparatively,so that how the impacting speed and wettability affect the behavior can be analyzed with different contact angles(115°,135°,150°). It is found that the water droplet spreads,retracts,rebounds or smashes in each dynamic process. The spread factor increases with the higher speed while the spreading time(3 ms)has no change. When the velocity of droplet is 2.43 m/s,the spreading factor is up to 3.43. The study shows that the rebound behavior of droplet impacting on the hydrophobic-hydrophilic surface does not happen. Moreover,more satellite droplets are produced as the contact angle becomes bigger and the speed becomes higher. In addition,the superhydrophobic-hydrophilic surfaces contribute to decreasing in volume of single droplet after retraction behavior.

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备注/Memo

备注/Memo:
收稿日期:2018-12-28.
基金项目:江苏省高校自然科学研究面上项目(16KJB47008).
通讯联系人:华君叶,博士,高级实验师,研究方向:强化传热. E-mail:yepiaoluo.101@163.com
更新日期/Last Update: 2019-06-30