Granular Leidenfrost effect: Experiment and theory of floating particle clusters

Eshuis, Peter and Meer van der, Devaraj and Weele van der, Ko and Lohse, Detlef (2005) Granular Leidenfrost effect: Experiment and theory of floating particle clusters. Physical Review Letters, 95 (25). p. 258001. ISSN 0031-9007

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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 ". 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.
Item Type:	Article
Copyright:	© 2005 The American Physical Society
Faculty:	Science and Technology (TNW)
Research Group:	Physics of Fluids (POF)
Link to this item:	http://purl.utwente.nl/publications/54103
Official URL:	http://dx.doi.org/10.1103/PhysRevLett.95.258001
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