Abstract : 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.
https://hal-polytechnique.archives-ouvertes.fr/hal-00996421
Contributor : Denis Roura
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Submitted on : Tuesday, May 27, 2014 - 3:27:09 PM
Last modification on : Thursday, July 4, 2019 - 11:00:05 AM
Long-term archiving on : Wednesday, August 27, 2014 - 10:42:53 AM
