Plateau-Rayleigh instability of a viscous film on a soft fiber
Language
en
Article de revue
This item was published in
EPL - Europhysics Letters. 2024, vol. 145, p. 67001
European Physical Society/EDP Sciences/Società Italiana di Fisica/IOP Publishing
English Abstract
We theoretically study the Plateau-Rayleigh instability of a thin viscous film covering a fiber consisting of a rigid cylindrical core coated with a thin compressible elastic layer. We develop a soft-lubrication model, ...Read more >
We theoretically study the Plateau-Rayleigh instability of a thin viscous film covering a fiber consisting of a rigid cylindrical core coated with a thin compressible elastic layer. We develop a soft-lubrication model, combining the capillary-driven flow in the viscous film to the elastic deformation of the soft coating, within the Winkler-foundation framework. We perform a linear-stability analysis and derive the dispersion relation. We find that the growth rate is larger when the soft coating is more compliant. As such, softness acts as a destabilising factor. In contrast, increasing the thickness of the soft coating reduces the growth rate, due to the dominating geometrical effect.Read less <
European Project
Brownian Motion near Soft Interfaces
ANR Project
Capteur Interférométrique de Contraintes de Surface - ANR-21-CE06-0029
Frottements dans les systèmes complexes - ANR-21-CE06-0039
Frottements dans les systèmes complexes - ANR-21-CE06-0039
Origin
Hal imported