Particle simulation of vibrated gas-fluidized beds of cohesive fine powders

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dc.creatorMoon, Sung Joon
dc.creatorKevrekidis, I. G.
dc.creatorSundaresan, S.
dc.date2005-10-05
dc.date2006-08-09
dc.date.accessioned2026-07-07T06:44:08Z
dc.date.available2026-07-07T06:44:08Z
dc.descriptionWe use three-dimensional particle dynamics simulations, coupled with volume-averaged gas phase hydrodynamics, to study vertically vibrated gas-fluidized beds of fine, cohesive powders. The volume-averaged interstitial gas flow is restricted to be one-dimensional (1D). This simplified model captures the spontaneous development of 1D traveling waves, which corresponds to bubble formation in real fluidized beds. We use this model to probe the manner in which vibration and gas flow combine to influence the dynamics of cohesive particles. We find that as the gas flow rate increases, cyclic pressure pulsation produced by vibration becomes more and more significant than direct impact, and in a fully fluidized bed this pulsation is virtually the only relevant mechanism. We demonstrate that vibration assists fluidization by creating large tensile stresses during transient periods, which helps break up the cohesive assembly into agglomerates.
dc.descriptionto appear in I&EC Research, a special issue (Oct. 2006) in honor of Prof. William B. Russel
dc.identifierhttps://arxiv.org/abs/cond-mat/0510115
dc.identifierhttp://arxiv.org/abs/cond-mat/0510115
dc.identifierInd. & Eng. Chem. Res., 45 (21), 6966 - 6977 (2006)
dc.identifierdoi:10.1021/ie051114s
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/102678
dc.subjectMaterials Science
dc.subjectSoft Condensed Matter
dc.titleParticle simulation of vibrated gas-fluidized beds of cohesive fine powders
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