| Titre : | Numerical study on the effect of the air jets at the inlet distributor in the gas − solids circulating fluidized - bed risers (2010) |
| Auteurs : | Botao Peng, Auteur ; Jesse Zhu, Auteur ; Chao Zhang, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | Industrial & engineering chemistry research (Vol. 49 N° 11, Juin 2010) |
| Article en page(s) : | pp. 5310–5322 |
| Note générale : | Industrial chemistry |
| Langues : | Anglais |
| Tags : | 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 |
