Sharp acceleration of a macroscopic contact line induced by a particle
发表时间：2019-03-11
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- 论文类型：
- 期刊论文
- 第一作者：
- Mu, Lizhong
- 通讯作者：
- Ueno, I (reprint author), Univ Tokyo Sci, Fac Sci & Technol, Dept Mech Engn, Chiba 2788510, Japan.; Yoshikawa, HN (reprint author), Univ Cote Azur, CNRS, Lab JA Dieudonne, UMR 7351, F-06108 Nice 02, France.
- 合写作者：
- Kondo, Daichi,Inoue, Motochika,Kaneko, Toshihiro,Yoshikawa, Harunori N.,Zoueshtiagh, Farzam,Ueno, Ichiro
- 发表时间：
- 2017-11-01
- 发表刊物：
- JOURNAL OF FLUID MECHANICS
- 收录刊物：
- Scopus、SCIE、EI
- 文献类型：
- J
- 卷号：
- 830
- ISSN号：
- 0022-1120
- 关键字：
- capillary flows; contact lines; drops
- 摘要：
- Wetting of a planar solid substrate is investigated in the presence of a macroscopic particle in the complete wetting regime. A drop of silicone oil spreads on the substrate and its macroscopic edge is incident on the particle at the late stage of spreading. The drop-particle interaction is observed in detail by shadowgraph and interferometry. Although the spreading drop edge is pinned by the particle for a short time, a sharp acceleration occurs when the liquid starts wetting the extra surface area offered by the particle and forming a meniscus. This process yields a net gain in spreading speed. A theoretical model based on the classical wetting dynamics dictated by Cox's law is developed. It predicts that the capillary energy of the meniscus gives rise to a rapid motion of the liquid edge, showing good agreement with the dynamics observed in the experiments.
- 是否译文：
- 否
