Viscous cavities

Anne Le Goff (1, 2) , David Quéré (3, 1) , Christophe Clanet (1, 3)

1 PMMH - Physique et mécanique des milieux hétérogenes (UMR 7636)
2 MMN - Laboratoire Microfluidique, MEMS, Nanostructures
3 LadHyX - Laboratoire d'hydrodynamique

We study experimentally the impact of solid spheres in a viscous liquid at moderate Reynolds numbers (Re similar to 5-100). We first determine the drag force by following the slowdown dynamics of projectiles. We then focus on the shape of the free surface: such impacts generate cavities, whose original shape is described and modeled. (C) 2013 American Institute of Physics.

Domaines: Mécanique des fluides [physics.class-ph]; Mécanique des fluides [physics.class-ph]

Anne Le Goff, David Quéré, Christophe Clanet. Viscous cavities. Physics of Fluids, 2013, 25 (4), pp.043101. ⟨10.1063/1.4797499⟩. ⟨hal-00996496⟩