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Investigation of heat transfer in 9-layer film blowing process by using variational principles

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dc.title Investigation of heat transfer in 9-layer film blowing process by using variational principles en
dc.contributor.author Kolařík, Roman
dc.contributor.author Zatloukal, Martin
dc.relation.ispartof Novel Trends in Rheology V
dc.identifier.issn 0094-243X Scopus Sources, Sherpa/RoMEO, JCR
dc.identifier.isbn 978-0-7354-1151-7
dc.date.issued 2013
utb.relation.volume 1526
dc.citation.spage 107
dc.citation.epage 118
dc.event.title International Conference on Novel Trends in Rheology V
dc.event.location Zlín
utb.event.state-en Czech Republic
utb.event.state-cs Česká republika
dc.event.sdate 2013-07-30
dc.event.edate 2013-07-31
dc.type conferenceObject
dc.language.iso en
dc.publisher American Institute of Physics (AIP) en
dc.identifier.doi 10.1063/1.4802606
dc.relation.uri http://proceedings.aip.org/resource/2/apcpcs/1526/1/107_1?bypassSSO=1
dc.subject Polymer en
dc.subject Coextrusion en
dc.subject Multi-layer film blowing en
dc.subject Heat transfer coefficient en
dc.subject Non-isothermal process en
dc.description.abstract In this work, coextrusion experiments utilizing an industrial 9-layer Brampton Engineering coextrusion film blowing line has been performed under different processing conditions (low/high air cooling intensity) in order to evaluate variational principles based modeling approach using energy equation utilizing variable heat transfer coefficient along the multi-layer bubble. It has been revealed that the variational principle based model can describe the bubble shape and temperature profile reasonably well even if the multi-layer film has been viewed as the static elastic membrane characterized only by one material parameter - bubble compliance J, which was not allow to vary along the bubble. Moreover, it has been found that if the freezeline height becomes long, heat transfer coefficient starts to vary significantly along the bubble which has crucial impact on the temperature profile along the multi-layer bubble. The performed theoretical parametric study revealed that increase in blow-up ratio or decrease in bubble curvature and air temperature causing bubble cooling efficiency increases, which allows to cooled down the multi-layer bubble for the given freezeline height to solidification temperature by smaller amount of the air volume flow rate. en
utb.faculty Faculty of Technology
dc.identifier.uri http://hdl.handle.net/10563/1003379
utb.identifier.obdid 43870330
utb.identifier.scopus 2-s2.0-84876942348
utb.identifier.wok 000319829500008
utb.source d-wok
dc.date.accessioned 2013-07-27T14:55:34Z
dc.date.available 2013-07-27T14:55:34Z
dc.rights.access openAccess
utb.contributor.internalauthor Kolařík, Roman
utb.contributor.internalauthor Zatloukal, Martin
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