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      Fundamentals of Global Modeling for Polymer Extrusion

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          Abstract

          A review paper is presented on modeling for polymer extrusion for both single screw and twin-screw extrusion. An issue of global modeling is discussed, which includes modeling for solid conveying, melting, melt flow, and co-operation of the screw/die system. The classical approach to global modeling of the extrusion process, which is based on separate models for each section of the screw, i.e., solid transport section, melting and pre-melting sections, and the melt flow section is presented. In this case, the global model consists of the elementary models. A novel continuous concept of global modeling based on CFD (Computational Fluids Dynamics) computations is also presented, and a concept of using the DEM (Discrete Element Method) computation coupled with CFD computations is discussed.

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          Explicit Formulas for Slip and Fluidity

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            The Rheology and Flow of Viscoplastic Materials

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              A global computer software for polymer flows in corotating twin screw extruders

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                Author and article information

                Journal
                Polymers (Basel)
                Polymers (Basel)
                polymers
                Polymers
                MDPI
                2073-4360
                15 December 2019
                December 2019
                : 11
                : 12
                : 2106
                Affiliations
                [1 ]Polymer Processing Department, Faculty of Production Engineering, Warsaw University of Technology, 02-524 Warsaw, Poland; a.nastaj@ 123456wip.pw.edu.pl (A.N.); a.lewandowski@ 123456wip.pw.edu.pl (A.L.); kami.buziak@ 123456gmail.com (K.B.)
                [2 ]Politech Ltd., 86-031 Bydgoszcz, Poland; wilczynski_k@ 123456wp.pl
                Author notes
                Author information
                https://orcid.org/0000-0003-1612-9178
                Article
                polymers-11-02106
                10.3390/polym11122106
                6960642
                31847461
                24a68239-8837-4f4a-8aa7-dff918bf3df3
                © 2019 by the authors.

                Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license ( http://creativecommons.org/licenses/by/4.0/).

                History
                : 25 October 2019
                : 13 December 2019
                Categories
                Review

                polymers,extrusion,modeling
                polymers, extrusion, modeling

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