Simulations of Viscoelastic Fluids Flows Using a Modified Log-Conformation Reformulation

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F17%3A00312785" target="_blank" >RIV/68407700:21220/17:00312785 - isvavai.cz</a>
Result on the web
<a href="http://www.it.cas.cz/fm/im/im/proceeding/2017/40" target="_blank" >http://www.it.cas.cz/fm/im/im/proceeding/2017/40</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.14311/TPFM.2017.040" target="_blank" >10.14311/TPFM.2017.040</a>

Result language
angličtina
Original language name
Simulations of Viscoelastic Fluids Flows Using a Modified Log-Conformation Reformulation
Original language description
The modiffed (non-singular) log-conformation reformulation proposed by Saramito [14] has been implemented in the finite-volume CFD toolbox OpenFOAM. An advantage of the possibility of using the modified reformulation over the original (singular) reformulation proposed by Fattal & Kupferman [7] at low Weissenberg numbers has been investigated. It was shown that in the case of regularized lid-driven cavity flow the original reformulation has a lower limit for the Weissenberg number. Below this limit the solution is unreliable. Such limit was not found for the modified (non-singular) reformulation. This allows to use this modified method also for the very low Weissenberg numbers (i.e. close to the Newtonian limit).
Czech name
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Czech description
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Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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