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Modeling of viscoelastic fluid flow behavior in the circular die using the leonov-like conformational rheological constitutive equations

Ramazani, A ; Sharif University of Technology | 2008

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  1. Type of Document: Article
  2. DOI: 10.1002/masy.200851402
  3. Publisher: 2008
  4. Abstract:
  5. In this paper, the flow behavior of Leonov-Like conformational rheological model, which has root in the generalized Poisson bracket formalism based on the conformation tensor, have been studied in the circular die flow. Prediction of the normal stress differences during the flow of these fluids lets us to follow and calculate relaxation dependent phenomena such as die swell. The model predictions have been compared for the four families of mobility expressions. The Study of the model prediction sensitivity to its mobility term shows that model predictions can cover a wide range of rheological behaviors generally observed for polymer melts and solutions in the circular die flow. Copyright © 2008 WILEY-VCH Verlag GmbH & Co. KGaA
  6. Keywords:
  7. Colloids ; Constitutive equations ; Dies ; Elasticity ; Plasticity ; Polymer melts ; Polyvinyl alcohols ; Rheology ; Tensors ; Viscosity ; Circular die ; Conformation tensor ; Die swells ; Flow behaviors ; Model predictions ; Modeling ; Normal stresses ; Poisson brackets ; Rheological behaviors ; Rheological models ; Viscoelastic fluid flows ; Forecasting
  8. Source: Macromolecular Symposia ; Volume 274, Issue 1 , 2008 , Pages 6-10 ; 10221360 (ISSN)
  9. URL: https://onlinelibrary.wiley.com/doi/10.1002/masy.200851402