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Computational fluid dynamics simulation of solid suspension in a gas-liquid-solid mechanically agitated contactor / Ranganathan Panneerselvam in Industrial & engineering chemistry research, Vol. 48 N°3 (Février 2009) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 48 N°3 (Février 2009) . - p. 1608–1620 Titre : Computational fluid dynamics simulation of solid suspension in a gas-liquid-solid mechanically agitated contactor Type de document : texte imprimé Auteurs : Ranganathan Panneerselvam, Auteur ; Sivaraman Savithri, Auteur ; Gerald Devasagayam Surender, Auteur Année de publication : 2009 Article en page(s) : p. 1608–1620 Note générale : Chemical engineering Langues : Anglais (eng) Mots-clés : Fluid  dynamics  Gas-liquid  Gas-solid  Solid  suspension Résumé : In the present study, computational fluid dynamics (CFD) simulations have been carried out to characterize a solid suspension in a gas-liquid-solid mechanically agitated contactor using the Eulerian multifluid approach with a standard k-ε turbulence model. A steady state method of multiple frame of reference (MFR) has been used to model the impeller and tank region. The CFD model predictions are compared qualitatively with the literature experimental data (Guha et al. Chem. Eng. Sci. 2007, 62, 6143; Spidla et al. Chem. Eng. J. 2005, 113, 73; Aubin et al. Exp. Therm. Fluid Sci. 2004, 28, 447) and quantitatively with our experimental data. Also the effect of different types of impellers (disk turbine and pitched blade turbine with downward pumping), impeller speed, particle size (125−230 μm), and gas flow rate (0-1 vvm) on the critical impeller speed for solid suspension in a gas-liquid-solid mechanically agitated contactor is investigated. The values predicted by CFD simulation agree well with experimental data for various operating conditions. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie800978w [article] Computational fluid dynamics simulation of solid suspension in a gas-liquid-solid mechanically agitated contactor [texte imprimé] / Ranganathan Panneerselvam, Auteur ; Sivaraman Savithri, Auteur ; Gerald Devasagayam Surender, Auteur . - 2009 . - p. 1608–1620. Chemical engineering Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 48 N°3 (Février 2009) . - p. 1608–1620 Mots-clés : Fluid  dynamics  Gas-liquid  Gas-solid  Solid  suspension Résumé : In the present study, computational fluid dynamics (CFD) simulations have been carried out to characterize a solid suspension in a gas-liquid-solid mechanically agitated contactor using the Eulerian multifluid approach with a standard k-ε turbulence model. A steady state method of multiple frame of reference (MFR) has been used to model the impeller and tank region. The CFD model predictions are compared qualitatively with the literature experimental data (Guha et al. Chem. Eng. Sci. 2007, 62, 6143; Spidla et al. Chem. Eng. J. 2005, 113, 73; Aubin et al. Exp. Therm. Fluid Sci. 2004, 28, 447) and quantitatively with our experimental data. Also the effect of different types of impellers (disk turbine and pitched blade turbine with downward pumping), impeller speed, particle size (125−230 μm), and gas flow rate (0-1 vvm) on the critical impeller speed for solid suspension in a gas-liquid-solid mechanically agitated contactor is investigated. The values predicted by CFD simulation agree well with experimental data for various operating conditions. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie800978w