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Computational fluid dynamics modeling and validation of bidisperse fluidized industrial powders

Owoyemi, O; Lettieri, P; (2008) Computational fluid dynamics modeling and validation of bidisperse fluidized industrial powders. IND ENG CHEM RES , 47 (16) 6316 - 6326. 10.1021/ie800138n.

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Abstract

This work presents the validation of a computational fluid dynamics (CFD) model recently developed by Owoyemi et al. [Owoyemi, O.; Mazzei, L.; Lettieri, P. CFD modeling of bidisperse fluidized suspensions and investigation of the role of particle-particle drag on mixing and segregation. AIChE J. 2007, 53 (8), 1924-1940] for the simulation of bidisperse fluidized suspensions. The paper focuses on the fluidization of industrial rutile powders used in the titanium refining industry. Results are presented on the experimental and numerical investigation into the mixing and segregation behavior of a bidisperse fluidized mixture of natural rutile (flotsam) and slag (jetsam), which differ in size, having mean diameters of 186 and 305 mu m, respectively, and having the same density of 4200 kg/m(3). Three different average compositions, corresponding to the average mass fraction of jetsam particles of 0.25, 0.50, and 0.75 in the bed were considered. Computational results obtained for mixing and segregation patterns, bed expansion, and bubble dynamics are validated against experimental data.

Type: Article
Title: Computational fluid dynamics modeling and validation of bidisperse fluidized industrial powders
DOI: 10.1021/ie800138n
Keywords: PARTICLE BED MODEL, SPHERICAL-PARTICLES, SEGREGATION, SYSTEMS, FLOWS, HYDRODYNAMICS, SUSPENSIONS, STABILITY
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Chemical Engineering
URI: http://discovery.ucl.ac.uk/id/eprint/61156
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