Journal
COLLOIDS AND INTERFACES
Volume 6, Issue 4, Pages -Publisher
MDPI
DOI: 10.3390/colloids6040053
Keywords
Marangoni convection; instability; surfactant
Categories
Funding
- Israel Science Foundation
- [843/18]
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This paper investigates the influence of insoluble surfactants on Marangoni patterns, considering various basic control parameters. In addition to reviewing previous results, new research findings are presented.
Marangoni patterns are created by instabilities caused by thermocapillary and solutocapillary stresses on the deformable free surface of a thin liquid layer. In the present paper, we consider the influence of the insoluble surfactant on the selection and modulational instability of stationary Marangoni patterns near their onset threshold. The basic governing parameters of the problem are the Biot number characterizing the heat-transfer resistances of and at the surface, the Galileo number indicating the role of gravity via viscous forces, and the elasticity number specifying the influence of insoluble surfactant on the interfacial dynamics of the liquid. The paper includes a review of the previous results obtained in that problem as well as new ones.
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