A stable transitional flow pattern in the surface tension driven spreading of ethanol-water solutions
A stable transitional flow pattern in the surface tension driven spreading of ethanol-water solutions
复制标题
乙醇水溶液表面张力驱动扩散的稳定过渡流动模式
DOI：
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发表时间：
1990
期刊：
影响因子：
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通讯作者：
D. Walters
中科院分区：
文献类型：
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作者：
D. Walters
当将一滴乙醇-水溶液置于不同乙醇-水溶液的表面上时，沿液滴边界的表面张力的差异沿着引起铺展行为，该铺展行为敏感地取决于两个本体相的乙醇浓度。在一个狭窄的浓度组合范围内，通过使用纹影摄影观察到一个复杂的流动模式与方位对称性。这一现象被认为是一种新的马拉戈尼效应，其特征在于其质量特征和浓度区域。浓度区与两种溶液之间的固定表面张力差一致。
When a drop of one ethanol-water solution is placed on the surface of a different ethanol-water solution, the difference in surface tension along the drop boundary causes spreading behavior which depends sensitively on the ethanol concentrations of the two bulk phases. Within a narrow range of concentration combinations, an intricate flow pattern with azimuthal symmetry was observed through the use of schlieren photography. This phenomenon, believed to be a novel Maragoni effect, was characterized in terms of its qualitative features and the region of concentrations for which it occurred. The concentration zone was consistent with a fixed surface tension difference between the two solutions.