Experimental study of foam jets

R. Lespiat (1) , R. Höhler (2, 1) , A.-L. Biance (3) , S. Cohen-Addad (1)

1 LPMDI - Laboratoire de Physique des Matériaux Divisés et des Interfaces
2 INSP - Institut des Nanosciences de Paris
3 LPMCN - Laboratoire de Physique de la Matière Condensée et Nanostructures

We investigate the flow of a foam injected through a cylindrical inlet into a quiescent liquid which is miscible with the foaming solution. Depending on a Reynolds number, combining inlet diameter, liquid viscosity, and flow rate, the jet disperses into a conical plume, takes a stable cylindrical straight shape whose radius swells with flow rate or disintegrates into blobs. We compare this behavior to that reported for other complex fluid jets and present a simple physical model for the straight jet regime.

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

R. Lespiat, R. Höhler, A.-L. Biance, S. Cohen-Addad. Experimental study of foam jets. Physics of Fluids, 2010, 22, pp.033302. ⟨10.1063/1.3335816⟩. ⟨hal-00507451⟩