[article]
| Titre : |
Experimental and computational fluid dynamics study of dense - phase, transition region, and dilute - phase spouting |
| Type de document : |
texte imprimé |
| Auteurs : |
Marcos A. S. Barrozo, Auteur ; Claudio R. Duarte, Auteur ; Norman Epstein, Auteur |
| Année de publication : |
2010 |
| Article en page(s) : |
pp. 5102–5109 |
| Note générale : |
Industrial chemistry |
| Langues : |
Anglais (eng) |
| Mots-clés : |
Fluid dynamics |
| Résumé : |
In this work, the transition between conventional dense-phase spouting and dilute-phase spouting is quantified and characterized on the basis of experimental particle velocity and bed voidage data, obtained with an optical fiber probe, as well as from the evolution of pressure with air velocity. The high gas velocities associated with the dilute-phase spouted bed (DSB) flow regime result in voidages exceeding 0.9 over the entire bed, with no discernible distinction between spout and annulus. The downward particle velocities for the DSB regime differ in magnitude from those in the dense-phase spouting regime. Computational fluid dynamics simulations using the Eulerian granular multiphase model show good agreement with experimental data for the three reproducible flow regimes: dense-phase spouting, transition regime, and dilute-phase spouting. |
| ISSN : |
0888-5885 |
| En ligne : |
http://pubs.acs.org/doi/abs/10.1021/ie9004892 |
in Industrial & engineering chemistry research > Vol. 49 N° 11 (Juin 2010) . - pp. 5102–5109
[article] Experimental and computational fluid dynamics study of dense - phase, transition region, and dilute - phase spouting [texte imprimé] / Marcos A. S. Barrozo, Auteur ; Claudio R. Duarte, Auteur ; Norman Epstein, Auteur . - 2010 . - pp. 5102–5109. Industrial chemistry Langues : Anglais ( eng) in Industrial & engineering chemistry research > Vol. 49 N° 11 (Juin 2010) . - pp. 5102–5109
| Mots-clés : |
Fluid dynamics |
| Résumé : |
In this work, the transition between conventional dense-phase spouting and dilute-phase spouting is quantified and characterized on the basis of experimental particle velocity and bed voidage data, obtained with an optical fiber probe, as well as from the evolution of pressure with air velocity. The high gas velocities associated with the dilute-phase spouted bed (DSB) flow regime result in voidages exceeding 0.9 over the entire bed, with no discernible distinction between spout and annulus. The downward particle velocities for the DSB regime differ in magnitude from those in the dense-phase spouting regime. Computational fluid dynamics simulations using the Eulerian granular multiphase model show good agreement with experimental data for the three reproducible flow regimes: dense-phase spouting, transition regime, and dilute-phase spouting. |
| ISSN : |
0888-5885 |
| En ligne : |
http://pubs.acs.org/doi/abs/10.1021/ie9004892 |
|
Ajouter le résultat dans votre panier Faire une suggestion Affiner la rechercheDisturbances in the hydrodynamic behavior of a spouted bed caused by an optical fiber probe in Industrial & engineering chemistry research, Vol. 51 N° 9 (Mars 2012)
