NDLI: Modélisation du revêtement de matière liquide lors d'un processus de trempage - approche thermomécanique et validation expérimentale

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Modélisation du revêtement de matière liquide lors d'un processus de trempage - approche thermomécanique et validation expérimentale

Content Provider	Semantic Scholar
Author	Rélot, Emmanuelle Bikard, Jérôme Navard, Patrick Budtova, Tatiana
Copyright Year	2007
Abstract	Ce papier a pour objectif de presenter les premiers essais de modelisation du procede de trempage d'un moule cylindrique dans un bain de polymere. L'objectif est de pouvoir predire numeriquement l'epaisseur de couche liquide extraite autour du moule apres sa sortie du bain. Une rheologie anisotherme newtonienne a ete utilisee dans un premier temps. Les premiers resultats obtenus ont montre que l'epaisseur extraite n'etait pas constante le long du moule ; elle est maximale a l'extremite inferieure et minimale a l'extremite superieure. Des problemes d'instabilites a l'interface matiere/air et de pertes de matiere apparaissent, une approche d'introduction de la tension de surface sera presentee = This paper describes the modelling of the dip-coating process over a cylindrical mould which is dipped into a liquid polymer bath at a constant speed. The goal of this work is to numerically predict the thickness of the layer extracted on the mould. An anisotropic newtonian rheology is used as a first approximation. The results show that the thickness is heterogeneous along the mould: maximal at the bottom and minimal at the top. The approach of encounting of the interfacial tension liquid/air in order to avoid surface instabilities and mass loss will be also presented
File Format	PDF HTM / HTML
Alternate Webpage(s)	https://hal-mines-paristech.archives-ouvertes.fr/hal-00521750/document
Alternate Webpage(s)	https://hal-mines-paristech.archives-ouvertes.fr/hal-00521750/file/CFM2007-0402.pdf
Alternate Webpage(s)	http://documents.irevues.inist.fr/bitstream/handle/2042/15853/CFM2007-0402.pdf;sequence=1
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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