Dynamics of a Complete Wetting Liquid Under Evaporation

Chi-Tuong Pham (1) , François Lequeux (2) , Laurent Limat (3)

1 LIMSI - Laboratoire d'Informatique pour la Mécanique et les Sciences de l'Ingénieur
2 PPMD - Laboratoire de Physico-Chimie des Polymères et des Milieux Dispersés
3 MSC - Matière et Systèmes Complexes

We describe a simple model of a contact line under purely diffusive evaporation and complete wetting condition taking into account the divergent nature of evaporative flux near the contact line as proposed by Deegan et al. [1] by using electrostatic analogy. We show the existence of a precursor film at the edge of the liquid and generalize Tanner's law accounting for evaporative effects. We apply this model to the problem of evaporation of a liquid droplet and partly recover the dynamics of spreading and retraction found in experiments [2].

Mots clés: moving contact line; complete wetting

Domaines: Physique [physics]; Science non linéaire [physics]; Matière Molle [cond-mat.soft]; Dynamique des Fluides [physics.flu-dyn]; Sciences de l'ingénieur [physics]; Milieux fluides et réactifs

Chi-Tuong Pham, François Lequeux, Laurent Limat. Dynamics of a Complete Wetting Liquid Under Evaporation. Ramon G. Rubio; Yuri S. Ryazantsev; Victor M. Starov; Guo-Xiang Huang; Alexander P. Chetverikov; Paolo Arena; Alex A. Nepomnyashchy; Alberto Ferrus; Eugene G. Morozov. Without Bounds : A Scientific Canvas of Nonlinearity and Complex Dynamics, Springer, pp.275-283, 2013, Understanding Complex Systems (UCS), 978-3-642-34069-7. ⟨10.1007/978-3-642-34070-3_25⟩. ⟨hal-02358401⟩