| Titre : |
Simulation of meltblowns processes - parameter study for polymer temperature and viscosity |
| Type de document : |
texte imprimé |
| Auteurs : |
Sergey Antonov, Auteur ; Walter Arne, Auteur ; Dietmar Hietel, Auteur |
| Année de publication : |
2021 |
| Article en page(s) : |
p. 183-184 |
| Langues : |
Anglais (eng) |
| Catégories : |
Air
Gaz -- Ecoulement
Procédé de fusion-soufflage (nontissés)
Procédés de fabrication par voie fondue (nontissés)
Simulation par ordinateur
Viscosité
|
| Index. décimale : |
677.6 Tissus obtenus par des procédés spéciaux, quelle que soit leur composition : jacquard, feutres tissés et non tissés, tapisseries, tissus ajourés |
| Résumé : |
In meltblown processes, microfibers and nanofibers are produced by the extrusion of polymeric jets into a directed, turbulent high-speed airflow. Due to its complexity direct numerical simulations of the multiscale-multiphase process are not possible. Fraunhofer ITWM developed a numerical framework fora forming fiber in turbulent air that makes the simulation of industrial setups feasible. For this purpose, an asymptotic viscoelastic model for the fiber is employed. The turbulent effects are taken into account by a stochastic aerodynamic force model where the underlying velocity fluctuations are reconstructed from a turbulence characterization of the airflow. A parameter study is performed, where the results clearly show how different parameters influence the fiber diameter distribution in the final product. |
| Note de contenu : |
- Modeling and simulation framework
- Simulation results for meltblown process
- Fig. 1 : Simulation of airflow : Air velocity and air temperature
- Fig. 2 : Diameter distribution for different viscosities at the nozzle |
| En ligne : |
https://drive.google.com/file/d/1muALHCIHJ6dVWAJrzKILwXizdOHpGBtb/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36962 |
in CHEMICAL FIBERS INTERNATIONAL > Vol. 71, N° 4 (12/2021) . - p. 183-184
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Simulation of meltblowns processes - parameter study for polymer temperature and viscosity in CHEMICAL FIBERS INTERNATIONAL, Vol. 71, N° 4 (12/2021)
