NDLI: Symmetry-to-asymmetry transition of Marangoni flow at a convex volatizing meniscus

Content Provider	Springer Nature Link
Author	Pan, Zhenhai Wang, Hao
Copyright Year	2010
Abstract	Plenty of studies have been made to have a comprehensive understanding of heat and mass transport at an evaporating meniscus. Recently in this journal Gazzola et al. (2009) reported an asymmetrical flow pattern generated at a convex meniscus while the boundary conditions were symmetrical. In their experiment a vertical micro well was filled up with liquid and the meniscus was held convex above the well outlet. The flow pattern at the meniscus was found having only one single vortex, which was distinct from those symmetrical paired vortexes in literatures (Buffone and Sefiane 2004). In the present work a simulation is conducted to clarify the mechanisms behind the abnormality. Factors including liquid evaporation, vapor transport, and Marangoni effect are considered. It is found that for a convex meniscus as that in the experiment, symmetrical flow pattern is not stable. The transition of symmetry to asymmetry occurs and this is greatly affected by random perturbations. After the asymmetrical flow pattern is established, the perturbations have relatively minor effects on the flow pattern.
Starting Page	657
Ending Page	669
Page Count	13
File Format	PDF
ISSN	16134982
Journal	Microfluidics and Nanofluidics
Volume Number	9
Issue Number	4-5
e-ISSN	16134990
Language	English
Publisher	Springer-Verlag
Publisher Date	2010-02-17
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Meniscus Marangoni Asymmetry Evaporation Liquid layer Vapor transport Biomedical Engineering Industrial Chemistry/Chemical Engineering Engineering Fluid Dynamics
Content Type	Text
Resource Type	Article
Subject	Nanoscience and Nanotechnology Materials Chemistry Condensed Matter Physics Electronic, Optical and Magnetic Materials

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