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dc.contributor.authorCloete, Schalk
dc.contributor.authorZaabout, Abdelghafour
dc.contributor.authorJohansen, Stein Tore
dc.contributor.authorAmini, Shahriar
dc.identifier.citationPowder Technology. 2012, 228 69-83.en_US
dc.description.abstractTwo approaches to modelling fluidized bed reactors were evaluated and compared in this work: a phenomenological 1D approach based on empirical closures and a more fundamental 2D approach based on computational fluid dynamics (CFD). The fundamental modelling approach should be more accurate and generic, but is several orders of magnitude more computationally expensive than the phenomenological approach. Therefore, the development of accurate, but computationally affordable phenomenological models is a matter of great importance. This work evaluated the behaviour of both modelling approaches over a wide range of operating variables spanning the bubbling fluidization regime. These variables included fluidization velocity, bed height, operating temperature and particle size. Several different closure models were evaluated for the phenomenological approach and it was shown that models for the bubble size, bubble-to-emulsion mass transfer coefficient and solids inside the bubble all have a significant impact on model performance. An optimal combination of closure models used in the phenomenological approach succeeded in providing a good match to data gathered from the more generic fundamental approach. The response of the model to changes in particle size was identified as the area with the greatest potential for further development. More detailed comparisons of axial distributions of important flow variables showed some differences between the predictions of the phenomenological and fundamental modelling approaches. In particular, the hydrodynamic measures of axial void distribution and bubble rise velocity predicted by these two approaches showed some significant differences.en_US
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 Internasjonal*
dc.subjectCentral composite designen_US
dc.subjectKinetic theory of granular flowsen_US
dc.subjectFluidized bed reactoren_US
dc.subject1D modelen_US
dc.subjectPhenomenological modelen_US
dc.subjectComputational fluid dynamicsen_US
dc.titleComparison of phenomenological and fundamental modelling approaches for predicting fluidized bed reactor performanceen_US
dc.typePeer revieweden_US
dc.typeJournal articleen_US
dc.rights.holder© 2012. This is the authors’ accepted and refereed manuscript to the article. This manuscript version is made available under the CC-BY-NC-ND 4.0 license
dc.source.journalPowder Technologyen_US
dc.relation.projectNorges forskningsråd: 197580en_US

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Attribution-NonCommercial-NoDerivatives 4.0 Internasjonal
Except where otherwise noted, this item's license is described as Attribution-NonCommercial-NoDerivatives 4.0 Internasjonal