| Titre : | Revisit of the wall effect on the settling of cylindrical particles in the inertial regime (2010) |
| Auteurs : | Raymond Lau, Auteur ; Meer Saiful Hassan, Auteur ; Wenyin Wong, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | Industrial & engineering chemistry research (Vol. 49 N° 18, Septembre 2010) |
| Article en page(s) : | pp. 8870–8876 |
| Note générale : | Industrial chemistry |
| Langues : | Anglais |
| Tags : | Cylindrical Particles |
| Résumé : | The wall effect on the settling of cylindrical particles in the inertial regime is revisited. This study covers particle Reynolds number from 600 to 16 100 and particle-length-to-diameter ratios (l/d) from 4 to 21. The wall factor (Ut/Ut,∞) is found to decrease initially as the particle-to-column diameter ratio (d/D) increases. When the wall effect becomes significant, Ut/Ut,∞ starts to increase with an increase in d/D due to a change of the particle orientation during settling. After Ut/Ut,∞ reaches a maximum, it decreases to 0 when d/D increases to 1. A semiempirical model is developed to predict the wall effect of settling of cylindrical particles over the whole range of d/D. The model shows good prediction to the experimental results and matches the wall factor models developed for spherical particles when l/d approaches 1. |
| ISSN : | 0888-5885 |
| En ligne : | http://pubs.acs.org/doi/abs/10.1021/ie1012807 |
