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dc.contributor.authorNgoma, Jeff
dc.contributor.authorPhilippe, Pierre
dc.contributor.authorBonelli, Stephane
dc.contributor.authorCuéllar, Pablo
dc.contributor.authorDelenne, Jean-Yves
dc.contributor.authorRadjai, Franck
dc.date.accessioned2020-05-18T16:32:33Z
dc.date.available2020-05-18T16:32:33Z
dc.date.issued2015
dc.identifier.isbn978-84-944244-7-2
dc.identifier.isbnAnglès
dc.identifier.urihttp://hdl.handle.net/2117/187963
dc.description.abstractBeyond a given threshold, an upward fluid flow at constant flowrate, injected through a small size section, is able to generate a fluidization along a vertical chimney over the entire height of a granular assembly. Fluidization is first initiated in the immediate vicinity of the injection hole and then the fluidized zone grows gradually until reaching the upper surface of the granular packing. In this work, we present numerical results on the kinetics of chimney fluidization in an immersed granular bed produced with two-dimensional simulations coupling the Discrete Element and Lattice Boltzmann Methods (DEM-LBM). A parametric study is carried out with 11 different sets of physical parameters and analyzed based on spatio-temporal diagrams. Then a dimensional analysis allows finding general scaling laws for both threshold and growth rate of the fluidized zone by use of two dimensionless numbers, namely Reynolds and Archimedes numbers, while quite simple empirical relationships can also be proposed.
dc.format.extent9 p.
dc.language.isoeng
dc.publisherCIMNE
dc.subject.lcshFinite element method
dc.subject.lcshComputational methods in mechanics
dc.subject.lcshParticle methods (Numerical analysis)
dc.subject.otherGranular Materials, DEM, LBM, Fluidization
dc.titleTransient regime to fluidized chimney within a granular bed by means of a 2D DEM/LBM modeling
dc.typeConference report
dc.subject.lemacElements finits, Mètode dels
dc.rights.accessOpen Access
local.citation.contributorPARTICLES IV
local.citation.publicationNamePARTICLES IV : proceedings of the IV International Conference on Particle-Based Methods : fundamentals and applications
local.citation.startingPage558
local.citation.endingPage566


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