A Study on Dynamic Wetting Behavior

动态润湿行为的研究

• 批准号: 23560203
• 负责人: KATOH Kenji
• 金额: $ 3.24万
• 依托单位: Osaka City University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2011
• 资助国家: 日本
• 起止时间: 2011 至 2013
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23560203/
• 关键词: 表面・界面物性; 接触角; 動的ぬれ; 毛細管; マイクロマシン; 動的ぬれ挙動; 壁面欠陥; 接触線

The dynamic contact angle dependent on the velocity of three-phase contact line were experimentally measured in capillary flow, 2D meniscus and axi-symmetric droplet. The results showed that the contact angle is not dependent on the contact line curvature, and cannot be simply arranged by Capillary number. It is suggested that wall defects such as roughness or impurities have a strong influence on the dynamic wetting behavior.A numerical simulation was performed to investigate the behavior of contact line passing over a defect with better wettability. The work of contact line deformation increases with the velocity. From the consideration of system energy equilibrium, the work of deformation should have an important role on the dynamic contact angle.

实验测量了毛细管流、二维弯月面和轴对称液滴中三相接触线速度对动态接触角的影响。结果表明，接触角不依赖于接触线曲率，也不能简单地由毛细管数来确定。结果表明，表面粗糙度或杂质等壁面缺陷对动态润湿行为有很大影响，通过数值模拟研究了接触线通过润湿性较好缺陷的行为。接触线变形功随着速度的增加而增大。从系统能量平衡的角度考虑，变形功对动接触角有重要影响。

项目成果

Dynamic Wet ing Behavior of Three-Phase Contact Line in Several Experimental Systems

几个实验系统中三相接触线的动态润湿行为

• 发表时间: 2014
• 期刊: Experimental Thermal and Fluid Science
• 影响因子: 3.2
• 作者: Katoh;K.;Wakimoto;T.;Yamamoto;Y. and Ito;T.
• 通讯作者: T.

Characteristics of Liquid Film Flowing around a Horizontal Circular Cylinder<BR>(Film Thickness and Wave Length of Standing Wave)

水平圆筒绕流液膜特性<BR>（膜厚和驻波波长）

• DOI: 10.11395/jjsem.10.s67
• 发表时间: 2010
• 期刊: Journal of the Japanese Society for Experimental Mechanics
• 作者: Katoh;K. and Wakimoto;T.
• 通讯作者: T.

Dynamic Wetting Behavior of Three-Phase Contact Line in Several Experimental Systems

多个实验系统中三相接触线的动态润湿行为

• 发表时间: 2013
• 作者: Katoh;K.
• 通讯作者: K.

A New Method to Manupilate a Drop on a Plate by using Laser and Supersonic Oscillator

利用激光和超声振荡器操纵平板上液滴的新方法

• 发表时间: 2011
• 作者: Mohd Hazwan bin Yusof;K. Moritake;H. Katanoda;Kenji KATOH
• 通讯作者: Kenji KATOH

A New Method to Actuate a Droplet on a Plate by Use of Laser Irradiation to Improve Wettability

• DOI: 10.11395/jjsem.13.19
• 发表时间: 2013-03
• 期刊: Journal of the Japanese Society for Experimental Mechanics
• 作者: T. Wakimoto;Yuzo Sato;K. Katoh