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High viscosity gas fluidization of fine particles: An extended window of quasihomogeneous flow

 

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dc.creator Valverde Millán, José Manuel
dc.creator Castellanos Mata, Antonio
dc.date.accessioned 2015-07-15T10:19:28Z
dc.date.available 2015-07-15T10:19:28Z
dc.date.issued 2006
dc.identifier.citation Valverde Millán, J.M. y Castellanos Mata, A. (2006). High viscosity gas fluidization of fine particles: An extended window of quasihomogeneous flow. Physical review. E, 74 (2), 021302-1-021302-6. es
dc.identifier.issn 1539-3755 es
dc.identifier.issn 1550-2376 es
dc.identifier.uri http://hdl.handle.net/11441/26890
dc.description.abstract We explore the role of gas viscosity in the behavior of gas-fluidized beds of fine powders by means of experimental measurements using nitrogen and neon as fluidizing gases, and theoretical considerations. The existence of a nonbubbling fluidlike regime has been recently observed in beds of fine powders fluidized with nitrogen. Our experiments with neon reveal a discontinuous transition from heterogeneous fluidization to a highly expanded homogeneous fluidization state. We point out that increasing gas viscosity enhances the coherence of agglomerate swarms, which promotes a local void-splitting mechanism, thus improving the uniformity of fluidization. Our theoretical analysis predicts that further increase of gas viscosity would produce a full suppression of the bubbling regime, i.e., the uniformly fluidized bed would undergo a direct transition to a turbulent regime as seen in beds of nanoparticles fluidized by nitrogen and in liquid-fluidized beds of moderate-density beads. es
dc.format application/pdf es
dc.language.iso eng es
dc.publisher American Physical Society es
dc.relation.ispartof Physical review. E, Statistical, nonlinear and soft matter physics, 74, 2, 021302-1-021302-6 es
dc.rights Attribution-NonCommercial-NoDerivatives 4.0 Internacional *
dc.rights.uri http://creativecommons.org/licenses/by-nc-nd/4.0/ *
dc.title High viscosity gas fluidization of fine particles: An extended window of quasihomogeneous flow es
dc.type info:eu-repo/semantics/article es
dc.rights.accessrights info:eu-repo/semantics/openAccess es
dc.contributor.affiliation Universidad de Sevilla. Departamento de Electrónica y Electromagnetismo es
dc.relation.publisherversion http://dx.doi.org/10.1103/PhysRevE.74.021302 es
dc.relation.publisherversion http://dx.doi.org/10.1103/PhysRevE.74.021302
dc.identifier.doi 10.1103/PhysRevE.74.021302
dc.journaltitle Physical review. E es
dc.publication.volumen 74 es
dc.publication.issue 2 es
dc.publication.initialPage 021302-1 es
dc.publication.endPage 021302-6 es
dc.identifier.idus https://idus.us.es/xmlui/handle/11441/26890
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