Average Shear Rates in the Screw Elements of a Corotating Twin-Screw Extruder

The rapid estimation of the average shear rate encountered by the material as it flows along the screw elements of a corotating twin-screw extruder is a key point for many applications. In this paper, two methods of evaluation are presented that allow the calculation of the average shear rate as a f...

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Detalles Bibliográficos
Autor principal: Vergnes, Bruno
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Communication
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7835943/
https://www.ncbi.nlm.nih.gov/pubmed/33478146
http://dx.doi.org/10.3390/polym13020304
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author Vergnes, Bruno
author_facet Vergnes, Bruno
author_sort Vergnes, Bruno
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description The rapid estimation of the average shear rate encountered by the material as it flows along the screw elements of a corotating twin-screw extruder is a key point for many applications. In this paper, two methods of evaluation are presented that allow the calculation of the average shear rate as a function of the screw geometry, feed rate, and screw speed. A comparison is made between the approximate and exact methods. It is shown that it is crucial to take into account the shear component due to the pressure flow, especially in the left-handed screw elements.
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spelling pubmed-78359432021-01-27 Average Shear Rates in the Screw Elements of a Corotating Twin-Screw Extruder Vergnes, Bruno Polymers (Basel) Communication The rapid estimation of the average shear rate encountered by the material as it flows along the screw elements of a corotating twin-screw extruder is a key point for many applications. In this paper, two methods of evaluation are presented that allow the calculation of the average shear rate as a function of the screw geometry, feed rate, and screw speed. A comparison is made between the approximate and exact methods. It is shown that it is crucial to take into account the shear component due to the pressure flow, especially in the left-handed screw elements. MDPI 2021-01-19 /pmc/articles/PMC7835943/ /pubmed/33478146 http://dx.doi.org/10.3390/polym13020304 Text en © 2021 by the author. 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 Communication
Vergnes, Bruno
Average Shear Rates in the Screw Elements of a Corotating Twin-Screw Extruder
title Average Shear Rates in the Screw Elements of a Corotating Twin-Screw Extruder
title_full Average Shear Rates in the Screw Elements of a Corotating Twin-Screw Extruder
title_fullStr Average Shear Rates in the Screw Elements of a Corotating Twin-Screw Extruder
title_full_unstemmed Average Shear Rates in the Screw Elements of a Corotating Twin-Screw Extruder
title_short Average Shear Rates in the Screw Elements of a Corotating Twin-Screw Extruder
title_sort average shear rates in the screw elements of a corotating twin-screw extruder
topic Communication
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7835943/
https://www.ncbi.nlm.nih.gov/pubmed/33478146
http://dx.doi.org/10.3390/polym13020304
work_keys_str_mv AT vergnesbruno averageshearratesinthescrewelementsofacorotatingtwinscrewextruder

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