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Article Navigation> JOURNAL OF BEIJING INSTITUTE OF TECHNOLOGY> 2011> 20(1): 129-137
CHEN Jin-nan, DAI Pan. Numerical study on mixing performance of screw elements in intermeshing counter-rotating and co-rotating twin-screw extrudes[J]. JOURNAL OF BEIJING INSTITUTE OF TECHNOLOGY, 2011, 20(1): 129-137.
Citation: CHEN Jin-nan, DAI Pan. Numerical study on mixing performance of screw elements in intermeshing counter-rotating and co-rotating twin-screw extrudes[J].JOURNAL OF BEIJING INSTITUTE OF TECHNOLOGY, 2011, 20(1): 129-137.
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Numerical study on mixing performance of screw elements in intermeshing counter-rotating and co-rotating twin-screw extrudes

  • School of Chemical Engineering and Environment, Beijing Institute of Technology, Beijing 100081, China

  • Received Date:2009-12-28
    Abstract
  • The flow process of unplasticized polyvinyl chloride (U-PVC) through the mixing zone of intermeshing counter-rotating and co-rotating twin-screw extruders (TSEs) were numerically simulated by the finite element method. Three-dimensional isothermal flow field of U-PVC in two kinds of TSE was calculated. The mixing performance of the screw elements of the extruders was statistically analyzed by particle tracking method. The dispersive mixing performance was characterized by the mixing index, the logarithm of stretching, and the segregation scale. The distributive mixing performance was characterized by the resident time distribution. The results indicate that the counter-rotating TSE can build higher pressure and generate higher axial velocity and shear rate, whereas the co-rotating TSE has better performance in dispersive and distributive mixing.
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    • References (13)
  • [1]
    Zhu L, Geng X. Experimental investigation of polymer pellets melting mechanisms in corotating twin-screw extrusion[J]. Advances in Polymer Technology, 2002,21:188-200.
    [2]
    Yoshinaga M, Katsuki S, Miyazaki M, et al. Mixing mechanism of three-tip kneading block in twin screw extruders[J]. Polymer Engineering Science, 2000,40: 168-178.
    [3]
    Shearer G, Tzoganakis C. Relationship between local residence time and distributive mixing in sections of a twin screw extruder[J]. Polymer Engineering and Science, 2001,41: 2206-2215.
    [4]
    Funatsu K, Kihara S, Miyazaki M. 3-D numerical analysis on the mixing performance for assemblies with filled zone of right-handed and left-handed double-flighted screws and kneading blocks in twin-screw extruders[J]. Polymer Engineering and Science, 2002,42(4): 707-723.
    [5]
    Bravo V L, Hrymak A N, Wright J D. Study of particle trajectories, residence times and flow behavior in kneading discs of intermeshing co-rotating twin-screw extruders[J]. Polymer Engineering Science, 2004,44:779-793.
    [6]
    Kim N, Kim H, Lee J. Numerical analysis of internal flow and mixing performance in polymer extruder II: twin screw element[J]. Korea-Australia Rheology Journal, 2006,18(3): 153-160.
    [7]
    Yang H B, Tong Y Q, Tian M, et al. Effect of operating conditions on the mixing performance of the screw element and the kneading block in a twin-screw extruder[J]. Journal of Polymer Engineering 2007,27(3): 183-196.
    [8]
    Barrera M A, Vega J F, Martinez-Salazar J. Three-dimensional modeling of flow curves in co-rotating twin-screw extruder elements [J]. Journal of Materials Processing Technology, 2008,97: 221-224.
    [9]
    Zhang X, Feng L, Chen W, et al. Numerical simulation and experimental validation of mixing performance of kneading discs in a twin screw extruder[J]. Polymer Engineering Science, 2009,49:1-12.
    [10]
    Polyflow. User’s manual[M]. Version 3.10.0. Lebanon, New Hampshire: Fluent Inc,2003.
    [11]
    Scanchez B, Llado J. Surface quality of PVC fittings based on the design of the sprue[J]. Journal of Materials Processing Technology, 2008,207:13-20.
    [12]
    Connelly R K, Kokini J L. Examination of the mixing ability of single and twin screw mixers using 2D finite element method simulation with particle tracking[J]. Journal of Food Engineering, 2007,79: 956-969.
    [13]
    Ottino J M, Ranz W E, Macosko C W. A framework for description of mechanical mixing of fluids[J]. AIChE Journal,1981,27:565-577. (Edited by
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