Modelling of viscoelastic coextrusion flows in multi-manifold flat dies
Result description
A recently proposed modification of the viscoelastic Leonov model is employed as a stress calculator in FEM analysis with a full u-v-p-t numerical scheme of the coextrusion flow in multi-manifold flat dies with 30 and 90 degree entrance angles. It is shown that the predicted stresses, interface location and streamlines fields are in a good agreement with the measurements. It is also revealed that the extensional viscosity has to be used in the modeling of the coextrusion flow to confirm experimental data.
Keywords
coextrusioninterfacial instabilitiesviscoelasticitymodelling
The result's identifiers
Result code in IS VaVaI
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Modelling of viscoelastic coextrusion flows in multi-manifold flat dies
Original language description
A recently proposed modification of the viscoelastic Leonov model is employed as a stress calculator in FEM analysis with a full u-v-p-t numerical scheme of the coextrusion flow in multi-manifold flat dies with 30 and 90 degree entrance angles. It is shown that the predicted stresses, interface location and streamlines fields are in a good agreement with the measurements. It is also revealed that the extensional viscosity has to be used in the modeling of the coextrusion flow to confirm experimental data.
Czech name
Modelování viskoelastického toku v plochých vytlačovacích hlavách
Czech description
Bylo zjištěno, že viskoelastický Leonovovův model umožňuje predikovat napěťové pole při koextruzním toku pro různé úhly vstupu v koextruzní hlavě. Bylo odhaleno, že elongační viskozita polymerních tavenin je nezbytnou reologickou charakteristikou pro dosažení shody mezi FEM modelováním a experimentálními daty pro koextruzní tok.
Classification
Type
Jx - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
CD - Macromolecular chemistry
OECD FORD branch
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Result continuities
Project
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Continuities
Z - Vyzkumny zamer (s odkazem do CEZ)
Others
Publication year
2004
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
PLASTICS RUBBER AND COMPOSITES
ISSN
1465-8011
e-ISSN
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Volume of the periodical
33
Issue of the periodical within the volume
7
Country of publishing house
GB - UNITED KINGDOM
Number of pages
5
Pages from-to
305-309
UT code for WoS article
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EID of the result in the Scopus database
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Basic information
Result type
Jx - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP
CD - Macromolecular chemistry
Year of implementation
2004