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Theoretical scaling law for predicting evaporation rate from meniscus

机译:用于预测弯月面蒸发速率的理论比例定律

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Previous studies have shown that diffusion-limited evaporation in the confined spaces such as tubes and gaps between parallel plates strongly depends on geometrical gap configurations. However, there is no study discussing the dependence of evaporation quantity on perimeter and curvature of the meniscus. In addition, there is no theoretical approach to predicting evaporation rates from menisci which have various interface shapes. In this study, evaporation rates in various geometrical gap configurations made of glass were experimentally measured and the dependence of evaporation quantity on perimeter and curvature of the meniscus was discussed. As the result, the different evaporation tendencies were found regarding the relation between capillary length and the characteristic length of gap configuration defined as an inner radius of a tube or a half of gap distance between parallel plates. Moreover, we derived the scaling law to relate evaporation rates to various interface shapes of menisci. The maximum evaporation rates predicted by this scaling law were consistent with the experimental data obtained in this study. (C) 2019 Elsevier Ltd. All rights reserved.
机译:先前的研究表明,在受限空间(如管子和平行板之间的缝隙)中的扩散受限蒸发在很大程度上取决于几何缝隙结构。但是,没有研究讨论蒸发量对弯液面的周长和曲率的依赖性。另外,还没有理论方法来预测具有各种界面形状的弯月面的蒸发速率。在这项研究中,实验测量了玻璃制成的各种几何间隙配置下的蒸发速率,并讨论了蒸发量对弯月面的周长和曲率的依赖性。结果,发现关于毛细管长度和间隙构造的特征长度之间的关系的不同的蒸发趋势,所述间隙构造的特征长度被定义为管的内半径或平行板之间的间隙距离的一半。此外,我们推导了定标律,将蒸发速率与弯液面的各种界面形状相关联。该比例定律预测的最大蒸发速率与本研究中获得的实验数据一致。 (C)2019 Elsevier Ltd.保留所有权利。

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