Jet impact on a soap film

Geoffroy Kirstetter (1) , Christophe Raufaste (1) , Franck Celestini (1)

1 LPMC - Laboratoire de physique de la matière condensée

We experimentally investigate the impact of a liquid jet on a soap film. We observe that the jet never breaks the film and that two qualitatively different steady regimes may occur. The first one is a refraction-like behavior obtained at small incidence angles when the jet crosses the film and is deflected by the film-jet interaction. For larger incidence angles, the jet is absorbed by the film, giving rise to a new class of flow in which the jet undulates along the film with a characteristic wavelength. Besides its fundamental interest, this study presents a new way to guide a micro-metric flow of liquid in the inertial regime and to probe foam stability submitted to violent perturbations at the soap film scale.

Domaines: Dynamique des Fluides [physics.flu-dyn]

Geoffroy Kirstetter, Christophe Raufaste, Franck Celestini. Jet impact on a soap film. Physical Review E : Statistical, Nonlinear, and Soft Matter Physics, 2012, 86 (3), pp.036303. ⟨hal-00725917⟩