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A Novel Modeling Approach for Plastics Melting within a CFD-DEM Framework

Existing three-dimensional modeling approaches to single-screw extrusion can be classified according to the process sections. The discrete element method (DEM) allows describing solids transport in the feed section. The melt flow in the melt section can be calculated by means of computational fluid...

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Autores principales: Celik, Alptekin, Bonten, Christian, Togni, Riccardo, Kloss, Christoph, Goniva, Christoph
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7826696/
https://www.ncbi.nlm.nih.gov/pubmed/33440753
http://dx.doi.org/10.3390/polym13020227
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author Celik, Alptekin
Bonten, Christian
Togni, Riccardo
Kloss, Christoph
Goniva, Christoph
author_facet Celik, Alptekin
Bonten, Christian
Togni, Riccardo
Kloss, Christoph
Goniva, Christoph
author_sort Celik, Alptekin
collection PubMed
description Existing three-dimensional modeling approaches to single-screw extrusion can be classified according to the process sections. The discrete element method (DEM) allows describing solids transport in the feed section. The melt flow in the melt section can be calculated by means of computational fluid dynamics (CFD). However, the current state of the art only allows a separate consideration of the respective sections. A joint examination of the process sections still remains challenging. In this study, a novel modeling approach is presented, allowing a joint consideration of solids and melt transport and, beyond that, the formation of melt. For this purpose, the phase transition from the solid to liquid states is modeled for the first time within the framework CFDEMCoupling(®), combining CFD and DEM by a novel melting model implemented in this study. In addition, a melting apparatus for the validation of the novel melting model is set up and put into operation. CFD-DEM simulations are carried out in order to calculate the melting rate and are compared to experimental results. A good agreement between the simulation and experimental results is found. From the findings, it can be assumed that the CFD-DEM simulation of single-screw extruder with a joint consideration of the feed and melt section is feasible.
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spelling pubmed-78266962021-01-25 A Novel Modeling Approach for Plastics Melting within a CFD-DEM Framework Celik, Alptekin Bonten, Christian Togni, Riccardo Kloss, Christoph Goniva, Christoph Polymers (Basel) Article Existing three-dimensional modeling approaches to single-screw extrusion can be classified according to the process sections. The discrete element method (DEM) allows describing solids transport in the feed section. The melt flow in the melt section can be calculated by means of computational fluid dynamics (CFD). However, the current state of the art only allows a separate consideration of the respective sections. A joint examination of the process sections still remains challenging. In this study, a novel modeling approach is presented, allowing a joint consideration of solids and melt transport and, beyond that, the formation of melt. For this purpose, the phase transition from the solid to liquid states is modeled for the first time within the framework CFDEMCoupling(®), combining CFD and DEM by a novel melting model implemented in this study. In addition, a melting apparatus for the validation of the novel melting model is set up and put into operation. CFD-DEM simulations are carried out in order to calculate the melting rate and are compared to experimental results. A good agreement between the simulation and experimental results is found. From the findings, it can be assumed that the CFD-DEM simulation of single-screw extruder with a joint consideration of the feed and melt section is feasible. MDPI 2021-01-11 /pmc/articles/PMC7826696/ /pubmed/33440753 http://dx.doi.org/10.3390/polym13020227 Text en © 2021 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/).
spellingShingle Article
Celik, Alptekin
Bonten, Christian
Togni, Riccardo
Kloss, Christoph
Goniva, Christoph
A Novel Modeling Approach for Plastics Melting within a CFD-DEM Framework
title A Novel Modeling Approach for Plastics Melting within a CFD-DEM Framework
title_full A Novel Modeling Approach for Plastics Melting within a CFD-DEM Framework
title_fullStr A Novel Modeling Approach for Plastics Melting within a CFD-DEM Framework
title_full_unstemmed A Novel Modeling Approach for Plastics Melting within a CFD-DEM Framework
title_short A Novel Modeling Approach for Plastics Melting within a CFD-DEM Framework
title_sort novel modeling approach for plastics melting within a cfd-dem framework
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7826696/
https://www.ncbi.nlm.nih.gov/pubmed/33440753
http://dx.doi.org/10.3390/polym13020227
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