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Please use this identifier to cite or link to this item: http://hdl.handle.net/2289/5388
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dc.contributor.authorHejmady, Prakhyat-
dc.contributor.authorBandyopadhyay, Ranjini-
dc.contributor.authorSabhapandit, Sanjib-
dc.contributor.authorDhar, Abhishek-
dc.date.accessioned2013-02-01T04:44:08Z-
dc.date.available2013-02-01T04:44:08Z-
dc.date.issued2012-12-
dc.identifier.citationPhysical Review E, 2012, Vol.86, p050301en
dc.identifier.issn1539-3755-
dc.identifier.issn1550-2376 (Online)-
dc.identifier.urihttp://hdl.handle.net/2289/5388-
dc.descriptionOpen Accessen
dc.description.abstractThe Brazil nut effect is the phenomenon in which a large intruder particle immersed in a vertically shaken bed of smaller particles rises to the top, even when it is much denser. The usual practice while describing these experiments has been to use the dimensionless acceleration Γ=aω2/g, where a and ω are, respectively, the amplitude and the angular frequency of vibration and g is the acceleration due to gravity. Considering a vibrated quasi-two-dimensional bed of mustard seeds, we show here that the peak-to-peak velocity of shaking v=aω, rather than Γ, is the relevant parameter in the regime where boundary-driven granular convection is the main driving mechanism. We find that the rise time τ of an intruder is described by the scaling law τ˜(v-vc)-α, where vc is identified as the critical vibration velocity for the onset of convective motion of the mustard seeds. This scaling form holds over a wide range of (a,ω), diameter, and density of the intruderen
dc.language.isoenen
dc.publisherAmerican Institute of Physicsen
dc.relation.urihttp://dx.doi.org/10.1103/PhysRevE.86.050301en
dc.relation.urihttp://arxiv.org/abs/1111.4484en
dc.relation.urihttp://adsabs.harvard.edu/abs/2012PhRvE..86e0301Hen
dc.rights2012 American Physical Societyen
dc.subjectGranular flowen
dc.subjectmixingen
dc.subjectsegregationen
dc.subjectstratificationen
dc.titleScaling behavior in the convection-driven Brazil nut effecten
dc.typeArticleen
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