A moment-based kinetic theory model for polydisperse gas–particle flows

dc.contributor.author Kong, Bo
dc.contributor.author Fox, Rodney
dc.contributor.author Fox, Rodney
dc.contributor.department Ames Laboratory
dc.contributor.department Chemical and Biological Engineering
dc.date 2019-06-22T15:19:21.000
dc.date.accessioned 2020-06-30T01:10:02Z
dc.date.available 2020-06-30T01:10:02Z
dc.date.copyright Tue Jan 01 00:00:00 UTC 2019
dc.date.embargo 2021-04-20
dc.date.issued 2019-01-01
dc.description.abstract <p>Starting from a generalized population balance equation and the Boltzmann–Enskog collision model for hard spheres, a kinetic theory model for polydisperse gas–particle flows is presented. Here, polydispersity results from spherical particles with the same material density but different diameters. The particle size distribution (PSD) of the particles is allowed to evolve in space and time due to physical processes such as mixing. In order to treat a continuous PSD, the particle-phase model is formulated in terms of the moments of the PSD, and velocity moments conditioned on the particle size. Velocity moments up to second order are included, resulting in transport equations for the mass, momentum and granular temperature, all conditioned on the particle size. In the numerical implementation, the PSD is represented using quadrature-based moment methods (QBMM). With QBMM, a continuous PSD can be treated using a relatively small number of moments as compared to class or sectional methods. Here, a realizable numerical algorithm for solving the moment system in a finite-volume code is proposed, valid for dilute systems wherein frictional forces are negligible. The ability of the proposed model to describe polydisperse gas–particle systems is demonstrated using cluster-induced turbulence and riser flow.</p>
dc.description.comments <p>This is a manuscript of an article published as Kong, Bo, and Rodney O. Fox. "A moment-based kinetic theory model for polydisperse gas–particle flows." <em>Powder Technology</em> (2019). DOI: <a href="http://dx.doi.org/10.1016/j.powtec.2019.04.031" target="_blank">10.1016/j.powtec.2019.04.031</a>. Posted with permission.</p>
dc.format.mimetype application/pdf
dc.identifier archive/lib.dr.iastate.edu/cbe_pubs/374/
dc.identifier.articleid 1375
dc.identifier.contextkey 14332505
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath cbe_pubs/374
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/13476
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/cbe_pubs/374/2019_FoxRodney_MomentBased.pdf|||Fri Jan 14 23:50:36 UTC 2022
dc.source.uri 10.1016/j.powtec.2019.04.031
dc.subject.disciplines Chemical Engineering
dc.subject.keywords Gas–particle flow
dc.subject.keywords Polydispersity
dc.subject.keywords Kinetic theory of granular flow
dc.subject.keywords Quadrature-based moment methods
dc.title A moment-based kinetic theory model for polydisperse gas–particle flows
dc.type article
dc.type.genre article
dspace.entity.type Publication
relation.isAuthorOfPublication 75da3185-b167-47f1-977f-b54aa85bd649
relation.isOrgUnitOfPublication 25913818-6714-4be5-89a6-f70c8facdf7e
relation.isOrgUnitOfPublication 86545861-382c-4c15-8c52-eb8e9afe6b75
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