| Titre : |
Numerical simulation of the dip-coating process with wall effects on the coating film thickness |
| Type de document : |
texte imprimé |
| Auteurs : |
Mahyar Javidi, Auteur ; Andrew N. Hrymak, Auteur |
| Année de publication : |
2015 |
| Article en page(s) : |
p. 843-853 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Couches minces
Dip-coating
Fluide de CarreauLe fluide de carreau est un type de fluide newtonien généralisé où la viscosité, dépend du taux de cisaillement.
Simulation par ordinateur
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
The dip-coating process for liquid film deposition on cylindrical substrates is numerically simulated, and the effects of the coating bath walls proximity to the substrate are investigated for the deposited film thickness. In the present work, the hydrodynamics of non-Newtonian liquid films are studied, applying Carreau and power law models. The free surface position is determined by the volume of fluid technique in a three-dimensional system, while the impacts of density, viscosity, and surface tension are taken into account. The momentum and mass balance, alongside the constitutive equations, were solved for dip-coating process using numerical simulations in an open source CFD software package of OpenFOAM. Numerical outcomes are validated with experimental data over a large range of withdrawal velocities up to 6 m/s. Also good agreement is obtained for numerical simulation results with experimental data for coating thickness, considering the proximity effects of bath walls to the cylindrical substrate being withdrawn from a coating bath. |
| Note de contenu : |
- THEORETICAL PROCEDURE : Mathematical formulation - Free surface implementation - Constitutive equations
- NUMERICAL PROCEDURE : Grid generation - Boundary conditions
- RESULTS AND DISCUSSION : Validation of simulation results with previous experimental data - Wall effects |
| DOI : |
10.1007/s11998-015-9699-7 |
| En ligne : |
https://link.springer.com/content/pdf/10.1007%2Fs11998-015-9699-7.pdf |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=24683 |
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 12, N° 5 (09/2015) . - p. 843-853
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Numerical simulation of the dip-coating process with wall effects on the coating film thickness in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 12, N° 5 (09/2015)
