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Bond数变化对固壁液滴接触角的影响
Alternative TitleInfluence of Bond Number on the Contact Angle of Liquid Drops Deposited on Solid Substrates
朱志强; 汪洋; 刘秋生
Source Publication工程热物理学报
2012-02-15
Volume33Issue:2Pages:251-254
ISSN0253-231X
Abstract本文利用微重力落塔实验研究了Bond数改变时,PTFE和铝板表面上正滴和倒滴接触角的动态变化。实验发现液滴接触角与Bond数的大小有关,当Bond数趋于0时,还与其放置状态有关。本文采用VOF方法对Bond数变化引起的液滴形状及内部流动变化进行二维数值模拟,结果显示液滴内部的流动控制着液滴的外形和接触角。
Other AbstractThe behaviors of liquid drops in microgravity have been experimentally performed in Beijing 3.6 s Drop Tower. Contact angle dynamic behaviors of sessile and pendant liquid drops on PTFE and Aluminum were measured and analyzed for varying Bond number. It was found that Bond number had direct influence on the drop contact angle. And the drops with different status (sessile or pendant) also exhibited dissimilar contact angle behaviors when Bond number closed to zero. For comparison, the VOF methodology was introduced to analyze numerically the influence of Bond number on the shapes and inner bulk flow fields of liquid drops. It indicated that the bulk flow could influence the shape and contact angle of drops evidently.
Keyword液滴 Bond数 接触角 微重力
Subject Area微重力流体力学
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Indexed ByCSCD ; EI
Language中文
Funding Organization国家自然科学基金资助项目(No.11072249;No.50890182); 中国科学院国防科技创新基金项目(No.CXtJJ-10-M55)
CSCD IDCSCD:4442297
DepartmentNML流动稳定性与复杂流动
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Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/46428
Collection国家微重力实验室
Corresponding Author朱志强
Recommended Citation
GB/T 7714
朱志强,汪洋,刘秋生. Bond数变化对固壁液滴接触角的影响[J]. 工程热物理学报,2012,33(2):251-254.
APA 朱志强,汪洋,&刘秋生.(2012).Bond数变化对固壁液滴接触角的影响.工程热物理学报,33(2),251-254.
MLA 朱志强,et al."Bond数变化对固壁液滴接触角的影响".工程热物理学报 33.2(2012):251-254.
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