Moving contact lines in a pure-vapor atmosphere: a singularity-free description in the sole framework of classical physics

Details Moving contact lines in a pure-vapor atmosphere: a singularity-free description in the sole framework of classical physics Moving contact lines in a pure-vapor atmosphere: a singularity-free description in the sole framework of classical physics

2012-02-01

arxiv.org/abs/1202.0273v1

Physics

Fluid Dynamics

To be submitted to Phys. Rev. Lett

Scientific paper

We here show that, even in the absence of "regularizing" microscopic effects (viz. slip at the wall or the disjoining pressure/precursor films), no singularities in fact arise for a moving contact line surrounded by the pure vapor of the liquid considered. There are no evaporation-related singularities either even should the substrate be superheated. We consider, within the lubrication approximation and a classical one-sided model, a contact line advancing/receding at a constant velocity, or immobile, and starting abruptly at a (formally) bare solid surface with a zero or finite contact angle.

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