An Experimental Investigation on Dynamic Wetting and Dynamic Contact Angle

WANG Xiao-dong; PENG Xiao-feng; WANG Bu-xuan

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An Experimental Investigation on Dynamic Wetting and Dynamic Contact Angle

更新时间：2026-07-07

- An Experimental Investigation on Dynamic Wetting and Dynamic Contact Angle
- Vol. 20, Issue 2, (2005)
- 作者机构：
  
  清华大学热能工程系相变与界面传递现象实验室,北京,100084
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2005
- 稿件说明：
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WANG Xiao-dong, PENG Xiao-feng, WANG Bu-xuan. An Experimental Investigation on Dynamic Wetting and Dynamic Contact Angle[J]. 2005, 20(2).
DOI：

WANG Xiao-dong, PENG Xiao-feng, WANG Bu-xuan. An Experimental Investigation on Dynamic Wetting and Dynamic Contact Angle[J]. 2005, 20(2). DOI：

摘要

利用精密步进电机、高速CCD图像采集系统、立体显微镜

采用液槽法测试硅酮油在玻璃、铝、不锈钢表面上的动态湿润行为。实验结果与前驱膜模型对比表明

无量纲参数λ在玻璃、铝和不锈钢表面上分别取值0.07

0.16和0.35时

二者吻合较好

表明动态接触角不仅是静接触角和毛细数的函数

也和固体表面性质有关。实验同时发现

对于低毛细数下成立的Hoffman-Voinov-Tanner定律(Cazabat推荐适用于CaD<1或θD<10°)

直到动态接触角达到70°依然成立

用前驱膜模型可给出合理解释。

Abstract

An experimental system

composed of a liquid tank

a solid thin plate

a step-motor

a CCD camera connected with stereoscopic microscope

a high-speed image acquisition card

and a computer

was utilized to investigate dynamic wetting behavior of silicone oil on glass

aluminum and stainless steel surfaces and understand the effect of the solid surface properties on the dynamic wetting behavior.It concludes that when the value of the dimensionless parameter

was selected as 0.07

0.16 and 0.35 for glass

aluminum and stainless steel

respectively

the experimental results are in good accordance with the prediction of the precursor film model presented by Wang and Peng et al.Clearly

the dynamic contact angle is dependent not only on the capillary number and static contact angle but also on λ describing the solid surface properties.Furthermore

it is shown that the Hoffman-Voinov-Tanner law valid at low capillary number (Ca1 or θ_D<10°) recommended by Cazabat still keeps true for a wide range of contact angles

up to 70°

which is reasonably explained by the precursor film model.

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Related Author

WANG Xiao-dong

LU Gui

PENG Xiao-feng

ZHANG Xin-xin

WANG Bu-xuan

LU Si-da

GAO Xi-guang

SONG Ying-dong

Related Institution

北京科技大学机械工程学院

清华大学相变与界面传递现象实验室

Jiangsu Province Key Laboratory of Aerospace Power System, College of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics

Department of Power and Propulsion, School of Engineering, Cranfield University, Bedfordshire MK4

State Key Laboratory of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics

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