Onset of solutal marangoni convection in a suddenly desorbing liquid layer

The onset of surface‐tension‐driven convection in an initially quiescent liquid layer experiencing sudden desorption from a free surface is analyzed using the linear stability theory. The propagation theory was developed for the basic time‐dependent concentration profile, which is strongly nonlinear...

Full description

Saved in:
Bibliographic Details
Published in:AIChE journal 2000-01, Vol.46 (1), p.15-23
Main Authors: Kang, Kyoung H., Choi, Chang K., Hwang, In G.
Format: Article
Language:English
Subjects:
Convection and heat transfer
Exact sciences and technology
Fluid dynamics
Fundamental areas of phenomenology (including applications)
Hydrodynamic stability
Physics
Surface-tension-driven instability
Turbulent flows, convection, and heat transfer
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The onset of surface‐tension‐driven convection in an initially quiescent liquid layer experiencing sudden desorption from a free surface is analyzed using the linear stability theory. The propagation theory was developed for the basic time‐dependent concentration profile, which is strongly nonlinear. Based on this theory, a new set of stability equations is derived in considering the effect of Gibbs adsorption and by neglecting the surface diffusion. It is found that the liquid layer becomes more stable by decreasing the Schmidt and Biot numbers. It is interesting that, during an initial period, the system is stable, depending on the Gibbs effect. The predictions agree favorably with the existing experimental results of triethylamine desorption in water in a wetted‐wall and a liquid‐jet column.
ISSN:0001-1541
1547-5905
DOI:10.1002/aic.690460104