Solving the reduced Navier-Stokes equation for the calculation of the flow of non-Newtonian polymer melts in single screw extruders numerical methods are needed. In this study, a numerical model, based on the finite difference method, for the description of the one- and two-dimensional fully developed conveying characteristics of power law fluids in the melt channel will be introduced. Furthermore, the two-dimensional model will be enhanced by considering the real cross-section of the screw channel and introducing adaption factors which approximate the fully developed three-dimensional flow behavior in the screw channel. Finally, a comprehensive comparison with CFD-Simulation results will be done. Therefore, a parametric study with three independent parameters, pitch to diameter ratio, width to height ratio and power law exponent, will be done and both, viscosity- and velocity-profiles as well as the calculated πm / πP − characteristics will be compared to CFD-Simulation results.
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23 May 2023
PROCEEDINGS OF THE 36TH CONFERENCE OF THE POLYMER PROCESSING SOCIETY – PPS36
26–29 September 2021
Montreal, Canada
Research Article|
May 23 2023
Simplified numerical calculation of the isothermal, three-dimensional, Non-Newtonian flow characteristics of single-screw melt-extruder
Daniel Stueker;
Daniel Stueker
a)
1
Paderborn University, Kunststofftechnik Paderborn (KTP)
, Warburger Str. 100, 33098 Paderborn, Germany
a)Corresponding author: [email protected]
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Volker Schoeppner
Volker Schoeppner
b)
1
Paderborn University, Kunststofftechnik Paderborn (KTP)
, Warburger Str. 100, 33098 Paderborn, Germany
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a)Corresponding author: [email protected]
AIP Conf. Proc. 2607, 060008 (2023)
Citation
Daniel Stueker, Volker Schoeppner; Simplified numerical calculation of the isothermal, three-dimensional, Non-Newtonian flow characteristics of single-screw melt-extruder. AIP Conf. Proc. 23 May 2023; 2607 (1): 060008. https://doi.org/10.1063/5.0138943
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