Title

Tears-Of-Wine and Related Phenomena

Abstract

The meniscus of a strong wine in a glass is drawn upward on the glass surface into a thin film. Due to a preferred evaporation of alcohol, the alcohol-lean liquid interface has a higher surface tension giving rise to a surface tension gradient and a flow which leads to the formation of the thin film. the accumulated liquid water forms "tears." the tears-of-wine phenomenon has been generalized here to account for movement of thin films containing contact lines and driven by surface tension gradients. the fluid mechanical problem has been solved under lubrication theory approximation and a rough comparison with the experiments made. the results obtained here for the nonwetting liquids show that wettability plays an important role and the lack of wetting ability can give rise to receding contact lines even when the gradient of surface tension opposes such a movement. © 1985.

Department(s)

Chemical and Biochemical Engineering

Keywords and Phrases

Alcohol-Lean Liquid Interface; Alcohols; Liquids - Surface Tensions; Surface Tension Gradient; Tears-Of-Wind Phenomenon; Fluid Mechanics - Mathematical Models

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 1985 Elsevier, All rights reserved.


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