Papers › Droplet motion with contact-line friction: long-time asymptotics in complete wetting

Droplet motion with contact-line friction: long-time asymptotics in complete wetting

6 Feb 2023arXiv:2302.03005links table onlyarchive 2025-07-28

Lorenzo Giacomelli, Manuel V. Gnann, Dirk Peschka

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We consider the thin-film equation for a class of free boundary conditions modelling friction at the contact line, as introduced by E and Ren. Our analysis focuses on formal long-time asymptotics of solutions in the perfect wetting regime. In particular, through the analysis of quasi-self-similar solutions, we characterize the profile and the spreading rate of solutions depending on the strength of friction at the contact line, as well as their (global or local) corrections, which are due to the dynamical nature of the free boundary conditions. These results are complemented with full transient numerical solutions of the free boundary problem.

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