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Revisit of the wall effect on the settling of cylindrical particles in the inertial regime / Raymond Lau in Industrial & engineering chemistry research, Vol. 49 N° 18 (Septembre 2010) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 49 N° 18 (Septembre 2010) . - pp. 8870–8876 Titre : Revisit of the wall effect on the settling of cylindrical particles in the inertial regime Type de document : texte imprimé Auteurs : Raymond Lau, Auteur ; Meer Saiful Hassan, Auteur ; Wenyin Wong, Auteur Année de publication : 2010 Article en page(s) : pp. 8870–8876 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : 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 [article] Revisit of the wall effect on the settling of cylindrical particles in the inertial regime [texte imprimé] / Raymond Lau, Auteur ; Meer Saiful Hassan, Auteur ; Wenyin Wong, Auteur . - 2010 . - pp. 8870–8876. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 18 (Septembre 2010) . - pp. 8870–8876 Mots-clés : 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