Please use this identifier to cite or link to this item: http://hdl.handle.net/10316/42852
DC FieldValueLanguage
dc.contributor.authorVentura, C. A. F.-
dc.contributor.authorGarcia, F. A. P.-
dc.contributor.authorFerreira, P. J.-
dc.contributor.authorRasteiro, M. G.-
dc.date.accessioned2017-08-24T10:08:42Z-
dc.date.available2017-08-24T10:08:42Z-
dc.date.issued2008-
dc.identifier.citationVentura, C. A. F., Garcia, F. A. P., Ferreira, P. J., Rasteiro, M. G. (2008). CFD simulation of the turbulent flow of pulp fibre suspensions. Proc. 2008 AIChE Annual Meeting, Philadelphia, USA (pres. 292 b, 11 pp.).ISBN 978-0-8169-1050-2.por
dc.identifier.isbn978-0-8169-1050-2-
dc.identifier.urihttp://hdl.handle.net/10316/42852-
dc.description.abstractPulp fibre suspensions are complex solid-liquid systems, since their components (fibre, flocs, additives…) present singular and complex interactions between them. As a consequence of this complexity, the understanding of the suspensions flow dynamics remains poor and incomplete, what usually leads to a conservative industrial equipment design and, hence, equipment oversizing. The purpose of this study is to obtain further knowledge about the dynamic mechanisms of the turbulent flow regime of industrial pulp suspensions, by producing and testing the viability of a model for the turbulent flow of fibre suspensions in conveying pipes, based on fundamental principles of conservation, and also on some experimental information (namely the rheological information) to adjust, empirically, unknown parameters as the fluid viscosity. With this purpose a numerical model was developed, based on a CFD code, using the Chemical Engineering module of COMSOL Multiphysics Software version 3.4. The K −ε Turbulence Model was chosen to simulate the pulp suspensions flow. Additionally, the final model was tested and validated using four different industrial pulp suspensions, which were previously fully studied experimentally (flow and rheological tests). The obtained results demonstrated that the pressure drop profiles obtained using COMSOL Multiphysics Software, for the turbulent flow regime, agree very well with the experimental results obtained in a pilot rig. Additionally, the use of the k −ε Turbulence Model for the simulation of pulp fibre suspensions flow, associated with the rheological data acquired experimentally, revealed to be a prompt and accurate strategy to attain good prediction of pressure drop values for fibre suspensions flow. Moreover, the adjustment of the turbulence parameters confirmed previous studies’ results, where it was concluded that the existence of particles, such as fibres, in a fluid flow, induces a turbulence damping.por
dc.language.isoengpor
dc.rightsopenAccesspor
dc.subjectPulp fibre flowpor
dc.subjectK-ε modelpor
dc.subjectCFD simulationpor
dc.subjectTurbulencepor
dc.subjectCOMSOL multiphysicspor
dc.titleCFD simulation of the turbulent flow of pulp fibre suspensionspor
dc.typeconferenceObjectpor
degois.publication.firstPage1por
degois.publication.lastPage11por
degois.publication.locationPhiladelphiapor
degois.publication.titleProceedings 2008 AIChE Annual Meetingpor
dc.peerreviewedyespor
item.languageiso639-1en-
item.fulltextCom Texto completo-
item.grantfulltextopen-
crisitem.author.deptFaculdade de Ciências e Tecnologia, Universidade de Coimbra-
crisitem.author.parentdeptUniversidade de Coimbra-
crisitem.author.researchunitResearch Center for Chemical Processes and Forest Products-
crisitem.author.orcid0000-0002-4503-6811-
Appears in Collections:FCTUC Eng.Química - Artigos em Livros de Actas
Files in This Item:
File Description SizeFormat
2008 AIChE Annual Meeting - 2.pdf262.91 kBAdobe PDFView/Open
Show simple item record

Page view(s)

286
checked on Oct 14, 2020

Download(s)

46
checked on Oct 14, 2020

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.