Conditions for the sliding-bouncing transition for the interaction of a bubble with an inclined wall

Christophe Barbosa (1, 2) , Dominique Legendre (1) , Roberto Zenit (2)

1 IMFT - Institut de mécanique des fluides de Toulouse
2 UNAM - Universidad Nacional Autónoma de México = National Autonomous University of Mexico

In this study we analyze the interaction of a single rising bubble with an inclined wall. We conduct experiments considering different liquids and bubble sizes, to cover a wide range of Reynolds and Weber numbers, with wall angles from nearly horizontal to nearly vertical. For all cases, the bubble initially collides with the wall; after the initial interaction, in accord with previous studies, the bubble either steadily slides on the wall or ascends, colliding repeatedly with it. Considering a force balance for the bubble motion on the wall, we propose a set of conditions for the transition from sliding to bouncing that is validated with the present and previous data.

Mots clés: Sliding-bouncing bubble; Wall interaction

Domaines: Science des matériaux [cond-mat.mtrl-sci]; Mécanique des fluides [physics.class-ph]; Dynamique des Fluides [physics.flu-dyn]

Christophe Barbosa, Dominique Legendre, Roberto Zenit. Conditions for the sliding-bouncing transition for the interaction of a bubble with an inclined wall. Physical Review Fluids, 2016, vol. 1 (n° 3), pp. 32201/1-32201/10. ⟨10.1103/PhysRevFluids.1.032201⟩. ⟨hal-01792573⟩