Stability analysis of non-isothermal film blowing process for non-Newtonian fluids using variational principles

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F70883521%3A28110%2F12%3A43867820" target="_blank" >RIV/70883521:28110/12:43867820 - isvavai.cz</a>
Alternative codes found
RIV/70883521:28610/12:43867820
Result on the web
<a href="http://dx.doi.org/10.1016/j.ces.2012.01.029" target="_blank" >http://dx.doi.org/10.1016/j.ces.2012.01.029</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.ces.2012.01.029" target="_blank" >10.1016/j.ces.2012.01.029</a>

Result language
angličtina
Original language name
Stability analysis of non-isothermal film blowing process for non-Newtonian fluids using variational principles
Original language description
In this study, a numerical stability analysis of the film blowing process is performed. The numerical scheme used is based on a variational principle model of the film blowing operation. This model employs non-isothermal processing conditions, non-Newtonian behavior of the polymer and physically limiting criteria (maximum tensile and/or hoop stress) to investigate the complex relationship between processing conditions (internal bubble pressure, heat transfer coefficient, mass flow rate, cooling air temperature, melt/die temperature), material parameters (rupture stress, Newtonian viscosity, flow activation energy, power law index) and film blowing stability. It has been shown that the melt/die temperature has the highest impact on the film blowing stability window size as well as on the maximum and minimum achievable film thickness. In more detail, it has been found that processing parameters together with flow activation energy have much higher effect on the film blowing stability and
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
CD - Macromolecular chemistry
OECD FORD branch
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Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2012
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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