Abstract: Chapter 2 Calculation Methods Pierre G. Lafleur, Pierre G. LafleurSearch for more papers by this authorBruno Vergnes, Bruno VergnesSearch for more papers by this author Pierre G. Lafleur, Pierre G. LafleurSearch for more papers by this authorBruno Vergnes, Bruno VergnesSearch for more papers by this author Pierre G. Lafleur, Pierre G. LafleurSearch for more papers by this authorBruno Vergnes, Bruno VergnesSearch for more papers by this author Book Author(s):Pierre G. Lafleur, Pierre G. LafleurSearch for more papers by this authorBruno Vergnes, Bruno VergnesSearch for more papers by this author First published: 08 May 2014 https://doi.org/10.1002/9781118827123.ch2 AboutPDFPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShareShare a linkShare onFacebookTwitterLinked InRedditWechat Summary This chapter provides the basics of the methods used to calculate the polymer melt flows in extruders and extrusion dies. The main flow parameters can be calculated by solving the set of equations consisting of: conservation of mass; conservation of momentum; conservation of energy; and a constitutive equation. Although three-dimensional (3D) models increase the accuracy of calculating the flow parameters, it is often advantageous to simplify the analysis and restrict it to only 1- or 2D models. Therefore, at first, the chapter presents calculations of one-directional isothermal flows in simple geometries. It then discusses a 2D finite difference method, which allows flow equations in more complex geometries to be quickly solved. Network methods (or FAN method) are relatively easy to implement, without the need for large computational resources. Nowadays, they are increasingly replaced with finite element methods which, coupled with CAD software, allow much more precise description of the geometry. Polymer Extrusion RelatedInformation
Publication Year: 2014
Publication Date: 2014-05-08
Language: en
Type: other
Indexed In: ['crossref']
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