| 外形分析-拟合求导法测接触角 |
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| 引用本文： | 林志勇,王晓东,彭晓峰.外形分析-拟合求导法测接触角[J].工程热物理学报,2005,26(5):847-849. |
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| 作者姓名： | 林志勇 王晓东 彭晓峰 |
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| 作者单位： | 相变与界面传递现象实验室,清华大学热能工程系,北京,100084;相变与界面传递现象实验室,清华大学热能工程系,北京,100084;相变与界面传递现象实验室,清华大学热能工程系,北京,100084 |
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| 摘 要： | 在外界来流作用下,液滴在固体表面上呈现周期性振荡特性,接触角的动态变化是表征该过程特性的重要参数, 传统方法不适用此接触角测量。在分析常用接触角测量方法的基础上,提出外形分析-拟合求导法测量动态接触角,同经典测量方法对比表明,外形分析-拟合求导法可很好地满足测量精度要求。
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| 关 键 词： | 振荡 液滴 外形分析-拟合求导法 接触角 测量 |
| 文章编号： | 0253-231X(2005)05-0847-03 |
| 修稿时间： | 2005年3月3日 |
CONTACT ANGLE MEASUREMENT WITH SHAPE FIT-DIFFERENTIAL METHOD |
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| LIN Zhi-Yong,WANG Xiao-Dong,PENG Xiao-Feng.CONTACT ANGLE MEASUREMENT WITH SHAPE FIT-DIFFERENTIAL METHOD[J].Journal of Engineering Thermophysics,2005,26(5):847-849. |
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| Authors: | LIN Zhi-Yong WANG Xiao-Dong PENG Xiao-Feng |
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| Abstract: | Liquid droplets could periodically oscillate on the solid surface under the air flow, which is described by the performance of dynamic contact angle. However, the traditional experimental technologies are not applicable for this kind of dynamical contact angle measurement. With improvement of normal measurement methods, a new technology, termed as shape-fit differential method, is proposed to measure the contact angle in the oscillation process. The experiments demonstrate that this method meets the precision demand very well. |
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| Keywords: | oscillation droplet shape fit-derivation method contact angle measurement |
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