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National Repository of Grey Literature 3 records found  Search took 0.00 seconds. 
Modeling of anisotropic viscoelastic fluids
 Šípka, Martin ; Tůma, Karel (advisor) ; Průša, Vít (referee)
In this thesis, we aim to create a framework for the derivation of thermodynamically consistent anisotropic viscoelastic models. As an example we propose simple models extending the isotropic Oldroyd-B and Giesekus models to illustrate the models' behavior and the process of finding the correct equations. We show what behavior in sheer we can expect and continue with a 3D simulation inspired by the experiment on a real liquid crystal mixture. Finally, we compare the simulation and the experiment to find similarities and possible further research topics.
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Modeling of anisotropic viscoelastic fluids
 Šípka, Martin ; Tůma, Karel (advisor) ; Průša, Vít (referee)
In this thesis, we aim to create a framework for the derivation of thermodynamically consistent anisotropic viscoelastic models. As an example we propose simple models extending the isotropic Oldroyd-B and Giesekus models to illustrate the models' behavior and the process of finding the correct equations. We show what behavior in sheer we can expect and continue with a 3D simulation inspired by the experiment on a real liquid crystal mixture. Finally, we compare the simulation and the experiment to find similarities and possible further research topics.
Detailed record
Thermodynamically compatible models capable of describing flows of viscoelastic fluids
 Nádeníček, Václav ; Málek, Josef (advisor) ; Průša, Vít (referee)
Title: Thermodynamically compatible models capable of describing flows of vis- coelastic fluids Author: Václav Nádeníček Department: Mathematical Institute of Charles University Supervisor: prof. RNDr. Josef Málek, CSc., DSc. Abstract: In the present thesis we develop a thermodynamic framework pro- posed by Rajagopal and Srinivasa and use it to derive several thermodynam- ically compatible rate-type models of viscoelastic fluids. We derive a general form of a model which encompasses common rate-type models some of which are later in the text developed. 1
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