Rise-time regimes of a large sphere in vibrated bulk solids

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We report experiments on the rise time T of a single large sphere within a sinusoidally vibrated bed (amplitude a) of uniform particles (diameter d). At fixed acceleration, we identify three distinct behavioral regimes both from visual observations and from the typical increase of T with frequency f. We observe two convective regimes separated by a critical frequency and, for low a and high f, a “nonconvective” regime. In the latter, the bed crystallizes and a size dependent rise is evidenced. We show the relevance of the nondimensional parameter a/d and deduce a scaling law of the formf∝d−1/2.

Original languageEnglish (US)
Pages (from-to)1255-1258
Number of pages4
JournalPhysical Review Letters
Issue number7
StatePublished - Feb 17 1997

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy


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