Improvement in techniques for the determination of extensional rheological data from entrance flows: Computational and experimental analysis

Journal of Non-Newtonian Fluid Mechanics

Volumn 107, Issue 1-3, 2002, Pages 13-37

  Zatloukal, Martin ^a   Vlček, Jiří ^b   Tzoganakis, Costas ^c   Sáha, Petr ^a  

^a TOMAS BATA UNIVERSITY IN ZLIN   (Czech Republic)

^b Vlcek Compuplast International Inc   (Czech Republic)

^c UNIVERSITY OF WATERLOO   (Canada)

Author keywords

Entrance flow; Entrance pressure drop method; Extensional viscosity; Modified White Metzner model; Numerical simulation

Indexed keywords

COMPUTER SIMULATION; FINITE ELEMENT METHOD; NON NEWTONIAN FLOW; RHEOLOGY; VISCOSITY;

ELONGATIONAL RATES;

NON NEWTONIAN LIQUIDS;

MODEL; RHEOLOGY; VISCOSITY;

EID: 0037032701     PISSN: 03770257     EISSN: None     Source Type: Journal    
DOI: 10.1016/S0377-0257(02)00111-8     Document Type: Article

References (26)

1. Converging flow of polymer melts in extrusion dies
2. An approximate analysis for contraction and converging flows
3. Further consideration of axisymmetric contraction flows
4. Die entry flows of reinforced polymers
5. Transient extensional viscosities and drawability of polymer melts
6. An assessment of Cogswell's method of measurement of extensional viscosity
7. Validation of Cogswell's convergent flow analysis
8. Extensional viscosity from entrance pressure drop measurements
9. Analysis of entry flow to determine elongation flow properties revised
10. The relevance of entry flow measurements for the estimation of extensional viscosity of polymer melts
11. Sensitivity analysis of the Bagley correction to shear and extensional rheology
12. Comparison of entry flow techniques for measuring elongation flow properties
13. Effect of extensional viscosity on axisymmetric entrance flow of polymers
14. Computational analysis of techniques to determine extensional viscosity from entrance flow
15. Evaluation and comparison of the predictions of various converging flow models for determining extensional viscosity data for polymer melts
16. Estimation of extensional viscosity from contraction flow
17. A simple empirical model describing the steady-state shear and extensional viscosities of polymer melts
18. Numerical simulation of multi-layer flow for polymer melts-a study of the effect of viscoelasticity on interface shape of polymers within dies
19. A numerical study of the effect of normal stresses and extensional viscosity on entry vortex growth and extrudate swell
20. Simulation of vortex growth in planar entry flow of a viscoelastic fluid