Numerical study on the effect of the air jets at the inlet distributor in the gas − solids circulating fluidized - bed risers / Botao Peng in Industrial & engineering chemistry research, Vol. 49 N° 11 (Juin 2010)  

Public ISBD [article]  inIndustrial & engineering chemistry research > Vol. 49 N° 11 (Juin 2010) . - pp. 5310–5322 Titre : Numerical study on the effect of the air jets at the inlet distributor in the gas − solids circulating fluidized - bed risers Type de document : texte imprimé Auteurs : Botao Peng, Auteur ; Jesse Zhu, Auteur ; Chao Zhang, Auteur Année de publication : 2010 Article en page(s) : pp. 5310–5322 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Air Jets Gas solids Résumé : This work numerically conducted a comprehensive study on the jet effect of inlet distributor arrangements on the flow structure of gas−solids two-phase flow in circulating fluidized-bed risers. A computational fluid dynamics (CFD) model based on the Eulerian−Eulerian approach coupled with granular kinetics theory was adopted to carry out the simulation. Simulation results were compared with the experimental data. It was found that the inlet distributor has a great effect on the entire flow structure. The numerical results using jet inlet approaches predicted more distinct core-annulus flow structures mimicking the experimental results while the uniform inlet condition predicted a very flat flow structure. The jet effect of the inlet distributor is clearly revealed. A large lateral flow can be seen because of the jet effect. A reasonable CFD model needs to take into account the inlet distributor configuration and consider the jet effect at the inlet. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie901902j [article] Numerical study on the effect of the air jets at the inlet distributor in the gas − solids circulating fluidized - bed risers [texte imprimé] / Botao Peng, Auteur ; Jesse Zhu, Auteur ; Chao Zhang, Auteur . - 2010 . - pp. 5310–5322. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 11 (Juin 2010) . - pp. 5310–5322 Mots-clés : Air Jets Gas solids Résumé : This work numerically conducted a comprehensive study on the jet effect of inlet distributor arrangements on the flow structure of gas−solids two-phase flow in circulating fluidized-bed risers. A computational fluid dynamics (CFD) model based on the Eulerian−Eulerian approach coupled with granular kinetics theory was adopted to carry out the simulation. Simulation results were compared with the experimental data. It was found that the inlet distributor has a great effect on the entire flow structure. The numerical results using jet inlet approaches predicted more distinct core-annulus flow structures mimicking the experimental results while the uniform inlet condition predicted a very flat flow structure. The jet effect of the inlet distributor is clearly revealed. A large lateral flow can be seen because of the jet effect. A reasonable CFD model needs to take into account the inlet distributor configuration and consider the jet effect at the inlet. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie901902j

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