Granular Leidenfrost Effect: Experiment and Theory of Floating Particle Clusters

Peter Eshuis, Ko van der Weele, Devaraj van der Meer, and Detlef Lohse
Phys. Rev. Lett. 95, 258001 – Published 15 December 2005

Abstract

Granular material is vertically vibrated in a 2D container: above a critical shaking strength, and for a sufficient number of beads, a crystalline cluster is elevated and supported by a dilute gaseous layer of fast beads underneath. We call this phenomenon the granular Leidenfrost effect. The experimental observations are explained by a hydrodynamic model featuring three dimensionless control parameters: the energy input S, the number of particle layers F, and the inelasticity of the particle collisions ε. The (S,F) phase diagram, in which the Leidenfrost state lies between the purely solid and gas phases, shows accurate agreement between experiment and theory.

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  • Received 17 June 2005

DOI:https://doi.org/10.1103/PhysRevLett.95.258001

©2005 American Physical Society

Authors & Affiliations

Peter Eshuis1, Ko van der Weele1,2, Devaraj van der Meer1, and Detlef Lohse1

  • 1Physics of Fluids Group, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands
  • 2Mathematics Department, Division of Applied Analysis, University of Patras, 26110 Patras, Greece

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Issue

Vol. 95, Iss. 25 — 16 December 2005

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