Rescaling the dynamics of evaporating drops

Christophe Poulard (1) , Geoffroy Guéna (1) , Anne-Marie Cazabat (1) , A. Boudaoud (2) , Martine Ben Amar (2)

1 LPFO - Laboratoire de physique des fluides organisés
2 LPS - Laboratoire de Physique Statistique de l'ENS

The dynamics of evaporation of wetting droplets has been investigated experimentally in an extended range of drop sizes, in order to provide trends relevant for a theoretical analysis. A model is proposed, which generalises Tanner's law, allowing us to smooth out the singularities both in dissipation and in evaporative flux at the moving contact line. A qualitative agreement is obtained, which represents a first step towards the solution of a very old, complex problem.

Mots clés: evaporating drops; Moving contact line; evaporating drops.

Domaines: Matière Molle [cond-mat.soft]

Christophe Poulard, Geoffroy Guéna, Anne-Marie Cazabat, A. Boudaoud, Martine Ben Amar. Rescaling the dynamics of evaporating drops. 2005. ⟨hal-00004993⟩