Titre :

Dimensional analysis for planetary mixer: Mixing time and Reynolds numbers

Auteur(s) :

Delaplace, Guillaume [Auteur]
Laboratoire de Génie des Procédés et Technologie Alimentaires [LGPTA]
Thakur, Rajeev [Auteur]
Laboratoire de Génie des Procédés et Technologie Alimentaires [LGPTA]
Bouvier, Laurent [Auteur]
Laboratoire de Génie des Procédés et Technologie Alimentaires [LGPTA]
Andre, Christophe [Auteur]
Hautes Etudes d’Ingénieur [Lille] [HEI]
Torrez, C. [Auteur]
Hautes Etudes d’Ingénieur [Lille] [HEI]

Titre de la revue :

Chemical Engineering Science

Numéro :

62

Pagination :

1442-1447

Éditeur :

Elsevier

Date de publication :

2007-03

ISSN :

0009-2509

Mot(s)-clé(s) en anglais :

mixing time
Newtonian viscous fluid
planetary mixer
dimensional analysis

Discipline(s) HAL :

Sciences de l'ingénieur [physics]/Génie des procédés
Physique [physics]/Matière Condensée [cond-mat]/Science des matériaux [cond-mat.mtrl-sci]
Physique [physics]/Matière Condensée [cond-mat]/Science des matériaux [cond-mat.mtrl-sci]
Physique [physics]/Matière Condensée [cond-mat]/Matière Molle [cond-mat.soft]
Sciences de l'ingénieur [physics]/Génie des procédés
Sciences du Vivant [q-bio]/Ingénierie des aliments

Résumé en anglais : [en]

Mixing time number is a convenient parameter to characterize mixing performance of stirred tanks. This dimensionless number is now well established for agitated vessels equipped with vertically and centrally mounted impeller ...
Lire la suite >Mixing time number is a convenient parameter to characterize mixing performance of stirred tanks. This dimensionless number is now well established for agitated vessels equipped with vertically and centrally mounted impeller for Newtonian as well as for non-Newtonian fluids. To our knowledge, there is more ambiguity concerning its definition for planetary mixers especially when they have dual motion (around two perpendicular axes) to achieve homogenization. In this study, dimensional analysis of mixing time and reliability of the modified Reynolds and mixing time numbers are proposed for such a planetary mixer particularly named as TRIAXE (R) system. These two numbers are based on the maximum tip speed of mixer as the characteristic velocity. Modified dimensionless numbers are consistent with the definition of conventional Reynolds and mixing numbers (when only one revolving motion around the vertical axis of the mixing device occurs in the vessel). Mixing time experiments with TRIAXE (R) mixer for highly viscous Newtonian fluids showed that the proposed modified Reynolds and mixing time numbers succeeded to obtain a unique mixing curve irrespective of the different speed ratio chosens. This agreement proves that the proposed modified dimensionless numbers can be well adapted for engineering purposes and they can be used to compare the mixing performance of planetary mixers.Lire moins >

Langue :

Anglais

Comité de lecture :

Oui

Audience :

Internationale

Vulgarisation :

Non

Références liée(s) :

https://www.journals.elsevier.com/chemical-engineering-science

Établissement(s) :

Université de Lille
INRA
ENSCL
CNRS

Collections :

• Unité Matériaux et Transformations (UMET) - UMR 8207

Équipe(s) de recherche :

Processus aux Interfaces et Hygiène des Matériaux (PIHM)

Date de dépôt :

2022-02-01T13:18:18Z
2022-02-01T13:43:19Z