Tears-Of-Wine and Related Phenomena
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.
P. Neogi, "Tears-Of-Wine and Related Phenomena," Journal of Colloid and Interface Science, Elsevier, May 1985.
The definitive version is available at http://dx.doi.org/10.1016/0021-9797(85)90350-9
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
Article - Journal
© 1985 Elsevier, All rights reserved.