Moving contact line of a volatile fluid

Abstract

Interfacial flows close to a moving contact line are inherently multi-scale. The shape of the interface and the flow at meso- and macroscopic scales inherit an apparent interface slope and a regularization length, both called after Voinov, from the dynamical processes at work at the microscopic level. Here, we solve this inner problem in the case of a volatile fluid at equilibrium with its vapor. The evaporative/condensation flux is then controlled by the dependence of the saturation temperature on interface curvature -- the so-called Kelvin effect. We derive the dependencies of the Voinov angle and of the Voinov length as functions of the substrate temperature. The relevance of the predictions for experimental problems is finally discussed.

References in corpus (6)

• Making a splash with water repellency
• Experimental Evidence of the Vapor Recoil Mechanism in the Boiling Crisis
• Relaxation of a dewetting contact line Part 2: Experiments
• Dynamics of the triple contact line on a non-isothermal heater at partial wetting
• Moving contact lines in a pure-vapor atmosphere: a singularity-free description in the sole framework of classical physics
• Gas spreading on a heated wall wetted by liquid

Cited by in corpus (6)

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• Liquid film dynamics with immobile contact line during meniscus oscillation
• Physics and modeling of liquid films in pulsating heat pipes
• Time-averaged approach to the dewetting problem at evaporation
• Thin-film equations with singular potentials: an alternative solution to the contact-line paradox
• Subgrid moving contact line model for direct numerical simulations of bubble dynamics in pool boiling of pure fluids