Spontaneous ratchet effect in a granular gas

Roger M. van der Meer, Peter Reimann, J.P. van der Weele, Detlef Lohse

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Abstract

The spontaneous clustering of a vibrofluidized granular gas is employed to generate directed transport in two different compartmentalized systems: a granular fountain in which the transport takes the form of convection rolls, and a granular ratchet with a spontaneous particle current perpendicular to the direction of energy input. In both instances, transport is not due to any systemintrinsic anisotropy, but arises as a spontaneous collective symmetry breaking effect of many interacting granular particles. The experimental and numerical results are quantitatively accounted for within a flux model.
Original languageUndefined
Pages (from-to)184301-1-184301-4
Number of pages4
JournalPhysical review letters
Volume92
Issue number18
DOIs
Publication statusPublished - 2004

Keywords

  • METIS-221012
  • IR-49048

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