Dimensional analysis for planetary mixer: ...
Document type :
Article dans une revue scientifique
Permalink :
Title :
Dimensional analysis for planetary mixer: Mixing time and Reynolds numbers
Author(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]

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]
Journal title :
Chemical Engineering Science
Volume number :
62
Pages :
1442-1447
Publisher :
Elsevier
Publication date :
2007-03
ISSN :
0009-2509
English keyword(s) :
mixing time
Newtonian viscous fluid
planetary mixer
dimensional analysis
Newtonian viscous fluid
planetary mixer
dimensional analysis
HAL domain(s) :
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
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
English abstract : [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 ...
Show more >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.Show less >
Show more >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.Show less >
Language :
Anglais
Peer reviewed article :
Oui
Audience :
Internationale
Popular science :
Non
Related reference(s) :
Administrative institution(s) :
Université de Lille
INRA
ENSCL
CNRS
INRA
ENSCL
CNRS
Collections :
Research team(s) :
Processus aux Interfaces et Hygiène des Matériaux (PIHM)
Submission date :
2022-02-01T13:18:18Z
2022-02-01T13:43:19Z
2022-02-01T13:43:19Z