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Inertial collapse of liquid rings

Published online by Cambridge University Press:  07 February 2013

Baptiste Darbois Texier
Affiliation:
PMMH, UMR 7636 CNRS, ESPCI, Université Paris 6, Université Paris 7, 75005 Paris, France Ladhyx, UMR 7646 CNRS, École Polytechnique, 91128 Palaiseau, France
Keyvan Piroird*
Affiliation:
PMMH, UMR 7636 CNRS, ESPCI, Université Paris 6, Université Paris 7, 75005 Paris, France Ladhyx, UMR 7646 CNRS, École Polytechnique, 91128 Palaiseau, France
David Quéré
Affiliation:
PMMH, UMR 7636 CNRS, ESPCI, Université Paris 6, Université Paris 7, 75005 Paris, France Ladhyx, UMR 7646 CNRS, École Polytechnique, 91128 Palaiseau, France
Christophe Clanet
Affiliation:
PMMH, UMR 7636 CNRS, ESPCI, Université Paris 6, Université Paris 7, 75005 Paris, France Ladhyx, UMR 7646 CNRS, École Polytechnique, 91128 Palaiseau, France
*
Email address for correspondence: keyvan.piroird@doc.polytechnique.org

Abstract

Liquid rings can be generated in the Leidenfrost state using liquid oxygen of low boiling point ( $- 183~\textdegree \mathrm{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.

Information

Type
Rapids
Copyright
©2013 Cambridge University Press

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Darbois Texier et al. supplementary movie

Top view of a collapsing liquid oxygen ring, of initial radius Ro = 4 mm and initial width ao = 2

Download Darbois Texier et al. supplementary movie(Video)
Video 1.4 MB