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Resonant and Invariant Advection in Single-Screw Extrusion

  • W. R. Hwang and T. H. Kwon
Published/Copyright: June 3, 2013
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International Polymer Processing
From the journal International Polymer Processing Volume 17 Issue 4

Abstract

In this paper, we discussed how unmixed and well-mixed zones are determined by the practical design parameters of the Chaos Screw (CS) system for the single-screw extruder, e. g. the helix angle, the magnitude of adverse pressure gradient, and the fraction of no-barrier zone. The key concept is the frequency ratio distribution of the unperturbed system. Through the extensive three-dimensional numerical simulations with finite element methods and particle tracing techniques, successive creation and breakup of resonant orbits and KAM tori in terms of design parameters are presented. The results show that one can predict the spatial configuration of well-mixed and unmixed zones from the frequency ratio distribution and the amount of the perturbation strength. Finally, the exit time distributions caused by dynamical structures are discussed.

* Mail address: T. H. Kwon, Dept. of Mech. Eng., Pohang University of Science and Technology, San 31, Hyojadong, Pohang, Kyungbuk, 790-784, South Korea
Received: 2002-9-9
Accepted: 2002-9-19
Published Online: 2013-06-03
Published in Print: 2002-12-01

© 2002, Carl Hanser Verlag, Munich

Articles in the same Issue

  1. Editorial
  2. Structure Development in Polyolefin Processing
  3. Screw Extrusion
  4. A New Style Single Screw Extruder with Improved Plastification and Output Power
  5. Visualisation and Analysis of the Flow along the Kneading Block of a Twin-screw Extruder
  6. Resonant and Invariant Advection in Single-Screw Extrusion
  7. Compounding
  8. PP-based Model Compounds as Tools for the Development of High-impact-ethylene-propylene Copolymers
  9. Die Extrusion
  10. Modelling of the Flow in the Distribution Plate of a Spin Pack
  11. Free-radical Reactions and Thermal Effects in PE during Pipe Extrusion
  12. Calendering
  13. Simultaneous Calculation of Roll Deformation and Polymer Flow in the Calendering Process
  14. Fiber and Film
  15. Investigation of Bubble Instabilities in Film Blowing Process
  16. Injection Molding
  17. Flow Visualization of Filling Process during Micro-Injection Molding
  18. Thermoforming
  19. The Role of Tool/Sheet Contact in Plug-assisted Thermoforming
  20. A Comparison of the Axisymmetric and Planar Elongational Viscosities of PE-LD
  21. Pultrusion
  22. Polymer Melt Impregnation of Glass Roving
  23. Reaction Injection Molding
  24. Operational and Design Study of RIM Machines
https://doi.org/10.3139/217.1710

Articles in the same Issue

  1. Editorial
  2. Structure Development in Polyolefin Processing
  3. Screw Extrusion
  4. A New Style Single Screw Extruder with Improved Plastification and Output Power
  5. Visualisation and Analysis of the Flow along the Kneading Block of a Twin-screw Extruder
  6. Resonant and Invariant Advection in Single-Screw Extrusion
  7. Compounding
  8. PP-based Model Compounds as Tools for the Development of High-impact-ethylene-propylene Copolymers
  9. Die Extrusion
  10. Modelling of the Flow in the Distribution Plate of a Spin Pack
  11. Free-radical Reactions and Thermal Effects in PE during Pipe Extrusion
  12. Calendering
  13. Simultaneous Calculation of Roll Deformation and Polymer Flow in the Calendering Process
  14. Fiber and Film
  15. Investigation of Bubble Instabilities in Film Blowing Process
  16. Injection Molding
  17. Flow Visualization of Filling Process during Micro-Injection Molding
  18. Thermoforming
  19. The Role of Tool/Sheet Contact in Plug-assisted Thermoforming
  20. A Comparison of the Axisymmetric and Planar Elongational Viscosities of PE-LD
  21. Pultrusion
  22. Polymer Melt Impregnation of Glass Roving
  23. Reaction Injection Molding
  24. Operational and Design Study of RIM Machines
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