Publication:
Effect of vertical vibration and particle size on the solids hold-up and mean bubble behavior in a pseudo-2D fluidized bed

Simple item page
dc.affiliation.dptoUC3M. Departamento de Ingeniería Térmica y de Fluidoses
dc.affiliation.grupoinvUC3M. Grupo de Investigación: Ingeniería de Sistemas Energéticoses
dc.contributor.authorCano Pleite, Eduardo
dc.contributor.authorShimizu, Yoshiki
dc.contributor.authorAcosta Iborra, Antonio
dc.contributor.authorMawatari, Yoshihide
dc.date.accessioned2021-04-20T10:25:54Z
dc.date.available2021-04-20T10:25:54Z
dc.date.issued2016-11-15
dc.description.abstractThe solids hold-up and mean bubble behavior in a vertically-vibrated fluidized bed are experimentally studied in the present work by Means of Digital Image Analysis (DIA) for four different powders with Geldart classifications A, B and A/B. The bed has a small thickness (i.e. pseudo-2D bed) and operates in bubbling regime subject to a wide range of gas superficial velocities, vibration frequencies and vibration amplitudes. Mean parameters of the bed and the bubbles, such as solids hold-up, bubble fraction, bubble number density and bubble diameter and velocity, are characterized here by averaging the results over time and space. The results reveal that vibration of the bed promotes a confinement of the bubble path to the central section of the bed. This bubble confinement is more intense for the smallest particles tested and for high vibration strengths and creates two different bubble regimes in the bed. In particular, close to the distributor, the bubble velocity decreases when increasing the vibration amplitude of the bed vessel because bubbles are smaller and less confined, and they behave like isolated bubbles. The behavior of bubbles changes when they are far from the distributor, where the interaction between bubbles becomes greater due to their bigger size and the confinement of bubbles induced by vibration. This confinement promotes coalescence of bubbles. It is shown that consideration of these two different regimes of bubble dynamics allows to shed light on understanding the apparently contradictory results encountered in the literature regarding bubble behavior in bubbling vibrated fluidized beds.en
dc.description.sponsorshipThis work has been partially funded by the Universidad Carlos III de Madrid, Spain, Ayudas a la Movilidad 2014.en
dc.description.statusPublicadoes
dc.format.extent14
dc.identifier.bibliographicCitationChemical Engineering Journal, v. 304, pp.: 384-398.en
dc.identifier.doihttps://doi.org/10.1016/j.cej.2016.06.095
dc.identifier.issn1385-8947
dc.identifier.publicationfirstpage384
dc.identifier.publicationlastpage398
dc.identifier.publicationtitleCHEMICAL ENGINEERING JOURNALen
dc.identifier.publicationvolume304
dc.identifier.urihttps://hdl.handle.net/10016/32430
dc.identifier.uxxiAR/0000018301
dc.language.isoengen
dc.publisherElsevier
dc.rights© 2016 Elsevier B.V. All rights reserved.en
dc.rightsAtribución-NoComercial-SinDerivadas 3.0 España*
dc.rights.accessRightsopen accessen
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/*
dc.subject.ecienciaIngeniería Industriales
dc.subject.otherFluidized beden
dc.subject.otherVibrationen
dc.subject.otherBubbleen
dc.subject.otherPseudo-2Den
dc.subject.otherDIAen
dc.subject.otherDigital Image Analysisen
dc.titleEffect of vertical vibration and particle size on the solids hold-up and mean bubble behavior in a pseudo-2D fluidized beden
dc.typeresearch article*
dc.type.hasVersionAM*
dspace.entity.typePublication
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
effect_CEJ_2016_ps.pdf
Size:
2.03 MB
Format:
Adobe Portable Document Format
Download
Collections
DITF - ISE - Artículos de Revistas Científicas