Theoretical and experimental investigation of unusual flow phenomena occurring during viscoelastic coextrusion flows
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F70883521%3A28110%2F05%3A63503814" target="_blank" >RIV/70883521:28110/05:63503814 - isvavai.cz</a>
Result on the web
—
DOI - Digital Object Identifier
—
Alternative languages
Result language
angličtina
Original language name
Theoretical and experimental investigation of unusual flow phenomena occurring during viscoelastic coextrusion flows
Original language description
Fully viscoelastic FEM together with flow visualization technique are employed to quantify the effect of the die design on the wave type of interfacial instabilities in coextrusion. It has been shown experimentally that the minor channel geometry has a strong impact on the wave type of interfacial instabilities and the results can be correlated through novel criteria called as Total Stress Difference (TSN), which takes in to account the bulk change of the total stress in normal as well as tangential direction with respect to the interface. It has also been shown that specific type of high stress area occurs around the interface at the end of the converging section. This total stress has been found to be non-monotonic along the interface and related forthe onset of zig-zag type of interfacial instabilities when the total stress achieved 200 kPa.
Czech name
Teoretická a experimentální analýza neobvyklých jevů, které se objevují při koextruzi
Czech description
Nástup meziplošných nestabilit byl korelován s kritickou velikostí tensoru napětí (200kPa), a to na základě viskoelastické metody konečných prvků a experimentálních měření na vizualizační cele.
Classification
Type
C - Chapter in a specialist book
CEP classification
CD - Macromolecular chemistry
OECD FORD branch
—
Result continuities
Project
—
Continuities
Z - Vyzkumny zamer (s odkazem do CEZ)
Others
Publication year
2005
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Book/collection name
Polymer Process Engineering 05: Enhanced Polymer Processing
ISBN
1851432264
Number of pages of the result
23
Pages from-to
347-369
Number of pages of the book
—
Publisher name
University of Bradford
Place of publication
Bradford
UT code for WoS chapter
—