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Simulation of 3-Dimensional Flow in Internal Mixers

Cylindrical Coordinate Hydrodynamic Lubrication Theory Model with Application to Rotor Design
  • B. Hu and J. L. White
Published/Copyright: May 27, 2013
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International Polymer Processing
From the journal International Polymer Processing Volume 8 Issue 1

Abstract

The design of internal mixers for the rubber industry has traditionally been based on the basis of intuition rather than a knowledge of the fluid mechanics of motions in the internal mixer. In recent years, efforts have been made to numerically simulate the flow and mixing characteristics in internal mixers. The simulation effort is important for the understanding of mixing mechanisms in the internal mixer, and furthermore, to provide a basis for rational design. In this paper, we develop a new model based on cylindrical coordinate hydrodynamic lubrication theory for internal mixers. This allows full consideration of curvature in an internal mixer. Numerical techniques are used to carry out the calculations of the pressure field and flux field for various rotors described in the patent literature. This is done for a Newtonian fluid in a fully filled mixing chamber. This type of calculation is of key importance in the design of flight arrangements on internal mixer rotors.

* Mail address: Prof. Dr. J. L. White, Institute of Polymer Engineering, University of Akron, Akron, Ohio 44325-0301, U.S.A.
Received: 1991-12-8
Accepted: 1992-4-3
Published Online: 2013-05-27
Published in Print: 1993-03-01

© 1993, Carl Hanser Verlag, Munich

Articles in the same Issue

  1. Contents
  2. Contents
  3. Invited Paper
  4. The Challenges of Waste Toward the 21st Century
  5. Internal Mixers
  6. Simulation of 3-Dimensional Flow in Internal Mixers
  7. Die Extrusion
  8. Effect of Surface Coatings on Wall Slip of LLDPE
  9. Effects of Interfacial Conditions on Wall Slip and Sharkskin Melt Fracture of HDPE
  10. Reactive Processing
  11. Maleation of Polypropylene Melt in Model Reactors
  12. Film
  13. Modeling of Non-isothermal Film Blowing with Integral Constitutive Equations
  14. Non-isothermal Crystallization of a Polymer Film on Chilling Rolls
  15. Molding
  16. A Process to Produce Microcellular PVC
  17. Orientation Development of Mixed Anisotropic Particles in Compounds
https://doi.org/10.3139/217.930018

Articles in the same Issue

  1. Contents
  2. Contents
  3. Invited Paper
  4. The Challenges of Waste Toward the 21st Century
  5. Internal Mixers
  6. Simulation of 3-Dimensional Flow in Internal Mixers
  7. Die Extrusion
  8. Effect of Surface Coatings on Wall Slip of LLDPE
  9. Effects of Interfacial Conditions on Wall Slip and Sharkskin Melt Fracture of HDPE
  10. Reactive Processing
  11. Maleation of Polypropylene Melt in Model Reactors
  12. Film
  13. Modeling of Non-isothermal Film Blowing with Integral Constitutive Equations
  14. Non-isothermal Crystallization of a Polymer Film on Chilling Rolls
  15. Molding
  16. A Process to Produce Microcellular PVC
  17. Orientation Development of Mixed Anisotropic Particles in Compounds
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