Inertial collapse of liquid rings

Baptiste Darbois Texier (1, 2) , Keyvan Piroird (1, 2) , David Quéré (1, 2) , Christophe Clanet (1, 2)

1 LadHyX - Laboratoire d'hydrodynamique
2 PMMH - Physique et mécanique des milieux hétérogenes (UMR 7636)

Liquid rings can be generated in the Leidenfrost state using liquid oxygen of low boiling point (-183 degrees C) and high magnetic susceptibility, allowing one to 'sculpt' the liquid into a ring shape using an annular magnet. When the magnetic field is turned off, the ring shrinks back into a puddle with a constant acceleration. A potential flow approach accurately describes the dynamics of closure with an equation reminiscent of the Rayleigh-Plesset equation for the collapse of transient cavities.

Domains: Fluid mechanics [physics.class-ph]; Fluids mechanics [physics.class-ph]

Baptiste Darbois Texier, Keyvan Piroird, David Quéré, Christophe Clanet. Inertial collapse of liquid rings. Journal of Fluid Mechanics, 2013, 717, pp.R3. ⟨10.1017/jfm.2013.15⟩. ⟨hal-00996421⟩