Surface roughness effects on contact line motion with small capillary number
Surface roughness effects on contact line motion with small capillary number
复制标题
表面粗糙度对小毛细管数接触线运动的影响
DOI:
10.1063/1.5003277
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发表时间:
2018-01
影响因子:
4.6
通讯作者:
Yue Pengtao
中科院分区:
文献类型:
--
作者:
YANG Feng-Chao;Chen Xiao-Peng;Yue Pengtao
In this work, we investigate how surface roughness influences contact line dynamics by simulating forced wetting in a capillary tube. The tube wall is decorated with microgrooves and is intrinsically hydrophilic. A phase-field method is used to capture the fluid interface and the moving contact line. According to the numerical results, a criterion is proposed to judge whether the grooves are entirely wetted or not at vanishing capillary numbers. When the contact line moves over a train of grooves, the apparent contact angle exhibits a periodic nature, no matter whether the Cassie-Baxter or the Wenzel state is achieved. The oscillation amplitude of apparent contact angle is analyzed and found to be inversely proportional to the interface area. The contact line motion can be characterized as stick-jump-slip in the Cassie-Baxter state and stick-slip in the Wenzel state. By comparing to the contact line dynamics on smooth surfaces, equivalent microscopic contact angles and slip lengths are obtained. The equiv...
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影响因子:
4.6
作者:
Wang J;Do-Quang M;Cannon JJ;Yue F;Suzuki Y;Amberg G;Shiomi J
通讯作者:
Shiomi J
影响因子:
4.6
作者:
Zhao MH;Chen XP;Wang Q
通讯作者:
Wang Q
影响因子:
4.1
作者:
Yue, Pengtao;Zhou, Chunfeng;Hu, Howard H.
通讯作者:
Hu, Howard H.
影响因子:
4.6
作者:
Shravanthi T. Reddy;P. Schunk;R. Bonnecaze
通讯作者:
Shravanthi T. Reddy;P. Schunk;R. Bonnecaze
DOI:
10.1103/physrevfluids.2.094002
发表时间:
2017-01
期刊:
--
影响因子:
--
作者:
P. Kant;A. Hazel;Mark C. Dowling;A. Thompson;A. Juel
通讯作者:
P. Kant;A. Hazel;Mark C. Dowling;A. Thompson;A. Juel