NOVEL MODELS OF VISCOUS LIQUIDS BASED ON CARREAU EQUATION

Several novel models of viscous liquids, which can be regarded as modifications or extensions of the Carreau model, are presented. These models describe the viscosity curves as functions of shear rate in the transition region between Newtonian and power law flow. Models were adapted for the descript...

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Veröffentlicht in:Polimery 2013-12, Vol.58 (11-12), p.913-919
1. Verfasser: Steller, Ryszard
Format: Artikel
Sprache:pol
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Zusammenfassung:Several novel models of viscous liquids, which can be regarded as modifications or extensions of the Carreau model, are presented. These models describe the viscosity curves as functions of shear rate in the transition region between Newtonian and power law flow. Models were adapted for the description of viscosity as a function of shear stress and generalized to describe more complex behaviour, e.g. pseudoplastic-dilatant.Original Abstract: Przedstawiono kilka nowych modeli cieczy lepkich, stanowiqcych modyfikacje lub rozszerzenia modelu Carreau, opisujqcych krzywe lepkosci jako funkcje szybkosci scinania w obszarze przejsciowym miedzy zakresem newtonowskim i potegowym. Modele dopasowano do opisu lepkosci jako funkcji naprezenia scinajacego i uogolniono do opisu bardziej zlozonego za-chowania, np. pseudoplastyczno-dylatantnego.
ISSN:0032-2725
DOI:10.14314/polimery.2013.913