| Titre : |
Study of distributive mixing in a journal bearing flow geometry |
| Type de document : |
texte imprimé |
| Auteurs : |
Mehdi Mostafaiyan, Auteur ; Sven Wießner, Auteur ; Gert Heinrich, Auteur |
| Année de publication : |
2022 |
| Article en page(s) : |
p. 70-82 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Eléments finis, Méthode des
Fluides, Mécanique des
Mélange
Rhéofluidifiants
|
| Index. décimale : |
668.4 Plastiques, vinyles |
| Résumé : |
We implicitly assess the distributive mixing of generalized Newtonian fluids with shear-thinning behavior in a journal bearing flow geometry. For this purpose, we firstly develop a finite element code to calculate the flow field parameters. Our numerical algorithm splits the viscous stress tensor into arbitrary Newtonian stress and a source term, which grows gradually during the iterative solution. Therefore, we get a better converging solution than the Picard method, especially for highly shear-thinning fluids. Secondly, considering two inert fluids in the mixing domain, we employ a Lagrangian-Eulerian approach to predict the shape of the interface between two fluids. The results of our numerical analysis provide us the required information to evaluate three implicit mixing criteria: the concentration variance, the striation thickness, and the mean strain function. Then we conduct a parametric study to investigate the effects of different parameters (geometry and rheology) on the distributive mixing state. In addition, we discuss which mixing criteria provide a better evaluation for distributive mixing. |
| Note de contenu : |
- THE FLOW PROBLEM AND THE SOLUTION METHOD : The flow field calculations - The two-phase flow problem
- THE MIXING CRITERIA
- RESULTS AND DISCUSSIONS : The effect of the shear-thinning behavior - The effect of the inner cylinder displacement - The effect of the inner rotating cylinder radius
- Table 1 : The ranges of the involved parameters in the distributive mixing in the journal bearing flow |
| DOI : |
https://doi.org/10.1515/ipp-2021-4145 |
| En ligne : |
https://drive.google.com/file/d/14ggmb9_mGZauac-zPMKgUvaiNNeQq-x_/view?usp=share [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38442 |
in INTERNATIONAL POLYMER PROCESSING > Vol. 37, N° 1 (2022) . - p. 70-82
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Study of distributive mixing in a journal bearing flow geometry in INTERNATIONAL POLYMER PROCESSING, Vol. 37, N° 1 (2022)
