Reversal of gulf stream circulation in a vertically vibrated triangular fluidized bed

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Show simple item record Cano Pleite, Eduardo Hernández Jiménez, Fernando Acosta Iborra, Antonio Müller, Christoph R. 2021-05-31T08:34:40Z 2021-05-31T08:34:40Z 2017-07-01
dc.identifier.bibliographicCitation Powder Technology (special issue Fluidization XV Conference, Montebello, Canada, May 22nd to 27th, 2016: Proceedings). : Engineering Conferences International. Pp. 345-356
dc.identifier.issn 0032-5910
dc.description Proceeding of: Fifteenth International Conference on Fluidization, Fluidization XV, Fluidization for Emerging Green Technologies, Montebello, Canada, May 22nd to 27th, 2016
dc.description.abstract The present work experimentally assesses the effect of vibration on the dynamics of particles in a fluidized bed of triangular shape. The base of the bed is composed of two inclined walls, each one forming an angle of 45 with the horizontal. The bed has 0.206 m span and 0.01 m thickness. The bed vessel is made of antistatic PMMA in order to allow optical access with a high-speed camera. The bed is mounted on an electrodynamic shaker which produces vertical vibration. The bed material is ballotini particles with a mean diameter of 1.15 mm up to the top of the inclined walls. Air was injected through the inclined bed walls to fluidize the bed to explore whether vibration of the bed vessel together with gas injection can make the dynamics of this bed different to that found when no gas is injected. A high speed camera was used to record the motion of particles in the bed. The velocity of the particles in the bed was obtained via Particle Image Velocimetry (PIV). The results show that several circulation patterns are observed as a function of vibration amplitude and frequency when the fluidization velocity is just below and above the minimum fluidization velocity. Noticeably, for zero gas velocity, particles ascend close to the side walls and descend in the center of the bed. By injecting fluidization gas, the circulation pattern of the bed can be reversed (i.e. particles descending near the inclined walls and ascending in the center of the bed). Conditions for which this reversal of the gulf stream circulation of particles appears in the triangular bed are explored in this work and these include gas superficial velocities higher than the minimum fluidization velocity and sufficiently high values of the vibration strength.
dc.description.sponsorship This work has been partially funded by the Universidad Carlos IIIde Madrid (Ayudas a la movilidad 2015) and by the Spanish Ministry of Economy and Competitiveness (project ENE2015/00188/001).
dc.format.extent 12
dc.language.iso eng
dc.publisher Elsevier B.V.
dc.rights © 2017 Elsevier BV. All rights reserved.
dc.rights This work is licensed under a Creative Commons Attribution- NonCommercial-NoDerivatives 4.0 International License.
dc.rights Atribución-NoComercial-SinDerivadas 3.0 España
dc.subject.other Fluidization
dc.subject.other Vibration
dc.subject.other Triangular bed
dc.subject.other Gulf stream circulation
dc.subject.other Digital image-analysis
dc.subject.other Pulverized coal
dc.subject.other Granular-materials
dc.subject.other Velocimetry piv
dc.subject.other Surface-waves
dc.subject.other Spout
dc.subject.other Discharge
dc.subject.other Convection
dc.subject.other Behavior
dc.subject.other Patterns
dc.title Reversal of gulf stream circulation in a vertically vibrated triangular fluidized bed
dc.type conferenceObject
dc.type article
dc.subject.eciencia Ingeniería Industrial
dc.rights.accessRights openAccess
dc.relation.projectID Gobierno de España. ENE2015/00188/001
dc.type.version acceptedVersion
dc.relation.eventdate 2016-05-22
dc.relation.eventplace Montebell, Quebec, CANADA
dc.relation.eventtitle Fluidization XV: Fluidization for Emerging Green Technologies
dc.relation.eventtype proceeding
dc.identifier.publicationfirstpage 345
dc.identifier.publicationlastpage 356
dc.identifier.publicationtitle Powder Technology (special issue Fluidization XV Conference, Montebello, Canada, May 22nd to 27th, 2016: Proceedings)
dc.identifier.publicationvolume 316
dc.identifier.uxxi CC/0000026294
dc.contributor.funder Ministerio de Economía y Competitividad (España)
dc.contributor.funder Universidad Carlos III de Madrid
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