期刊
PHYSICAL REVIEW FLUIDS
卷 1, 期 4, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevFluids.1.041901
关键词
-
资金
- Agence Nationale de la Recherche [AARDECO ANR-12-VPTT-005-02]
- ESA within MAP INWIP
We study the dynamics of evaporating ethanol films deposited by a receding liquid meniscus. The films are surrounded by pure vapor in a capillary heated above the saturation temperature. We observe the substrate dewetting with the dewetting ridge in spite of the complete wetting at equilibrium. The dewetting is caused by a high contact angle (similar to 30 degrees) induced by evaporation. The obtained values agree with a theory proposed earlier. The film shape ismeasured with both grid deflection technique and interferometry. The phenomenon is convenient to observe inside a capillary with an axial thermal gradient. When the capillary is closed at one end and open at another to a constant pressure reservoir, the meniscus oscillations are known to appear spontaneously. Such a system is the simplest version of an industrial device called a pulsating heat pipe. The effect is general and can be used in any system to control the wetting properties.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据