Titre :

A torus model containing a sliding well-mixed zone as a way to represent mixing process at unsteady stirring conditions in agitated vessels

Auteur(s) :

Dieulot, Jean-Yves [Auteur]
École polytechnique universitaire de Lille [Polytech Lille]
Petit, Nicolas [Auteur]
Centre Automatique et Systèmes [CAS]
Rouchon, Pierre [Auteur]
Centre Automatique et Systèmes [CAS]
Delaplace, Guillaume [Auteur]
Laboratoire de Génie des Procédés et Technologie Alimentaires [LGPTA]

Titre de la revue :

Chemical Engineering Communications

Numéro :

192

Pagination :

805-826

Éditeur :

Taylor & Francis

Date de publication :

2005

ISSN :

0098-6445

Mot(s)-clé(s) en anglais :

Modeling
Mixing
Nonlinear dynamics
Parameter identification
Unsteady stirring
Torus model

Discipline(s) HAL :

Sciences du Vivant [q-bio]
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
Sciences du Vivant [q-bio]/Biochimie, Biologie Moléculaire/Biologie moléculaire

Résumé en anglais : [en]

This article investigates the modeling of mixing phenomena occur at unsteady stirring conditions in that agitated vessels. In particular, a new model of a torus reactor including a well-mixed zone and a transport zone is ...
Lire la suite >This article investigates the modeling of mixing phenomena occur at unsteady stirring conditions in that agitated vessels. In particular, a new model of a torus reactor including a well-mixed zone and a transport zone is proposed. The originality of the arrangement of ideal reactors developed here is due to the time-dependent location of the boundaries between the two zones. This concept is applied to a model of the positive influence of unsteady stirring condition on a homogenization process; the model avoids mass balance discontinuity during the transitions from steady to unsteady stirring conditions. To ascertain the reliability of the model proposed, experimental runs with highly viscous fluids have been carried out in an agitated tank. The impeller used is a nonstandard helical ribbon impeller, fitted with an anchor at the bottom. The degree of homogeneity in the tank is recorded using a conductivity method after a tracer injection. It is shown that, for a given agitated fluid and mixing system, the parameters of the model are easy to estimate and that modeling results are in close agreement with experimental ones. Moreover, it appears that this model allows the easy derivation of the control law, which is a great advantage when optimizing the dynamics of a mixing process.Lire moins >

Langue :

Anglais

Comité de lecture :

Oui

Audience :

Internationale

Vulgarisation :

Non

Établissement(s) :

INRA
Université de Lille
CNRS
ENSCL

Collections :

• Unité Matériaux et Transformations (UMET) - UMR 8207

Équipe(s) de recherche :

Processus aux Interfaces et Hygiène des Matériaux (PIHM)

Date de dépôt :

2022-02-01T13:08:12Z
2022-02-01T13:23:03Z