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Coupling of thermocapillary convection and evaporation effect in a liquid layer when the evaporating interface is open to air

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  • Mechanics
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Chinese Science Bulletin

Abstract

The coupling mechanism of thermocapillary convection and evaporation effect in evaporating liquids was studied experimentally. The experiments were carried out to study a thin evaporating liquid layer in a rectangular test cell when the upper surface was open to air. By altering the imposed horizontal temperature differences and heights of liquid layers, the average evaporating rate and interfacial temperature profiles were measured. The flow fields were also visualized by PIV method. For comparison, the experiments were repeated by use of another two non-evaporating liquids to study the influence of evaporation effect. The results reveal evidently the role that evaporation effect plays in the coupling with thermocapillary convection.

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Authors and Affiliations

  1. Key Laboratory of Microgravity (National Microgravity Laboratory), Institute of Mechanics, Chinese Academy of Sciences, Beijing, 100190, China

    ZhiQiang Zhu & QiuSheng Liu

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  1. ZhiQiang Zhu
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  2. QiuSheng Liu
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Correspondence to QiuSheng Liu.

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Zhu, Z., Liu, Q. Coupling of thermocapillary convection and evaporation effect in a liquid layer when the evaporating interface is open to air. Chin. Sci. Bull. 55, 233–238 (2010). https://doi.org/10.1007/s11434-009-0693-2

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  • DOI: https://doi.org/10.1007/s11434-009-0693-2

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