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3D simulation and parametric analysis of polymer melt flowing through spiral mandrel die for pipe extrusion

Nie, Yi; Hao, Jing; Lin, Yueh-Jaw; Sun, Wei


Yi Nie

Jing Hao

Yueh-Jaw Lin

Wei Sun


With the increasing demands for large scale and high productivity, polymer pipes are recently produced using the advanced spiral mandrel dies. However, the fundamental research related to polymer melt flow mechanism in the spiral mandrel die for pipe extrusion is lagging behind. In the present study, the mathematical model for such a complex three-dimensional non-isothermal viscous flow of polymer melts obeying power law model was developed based on computational fluid dynamics (CFD) theory. Finite volume element method was applied to predict the rheological behaviours of polymer melt flowing through the complex flow channel. The essential flow characteristics including velocity, pressure drop, wall shear stress and temperature were investigated. The effects of both mandrel structure parameters and mass flow rate upon the flow patterns were further discussed. Some recommendations on spiral mandrel die design for pipe production were put forward.


Nie, Y., Hao, J., Lin, Y., & Sun, W. (2018). 3D simulation and parametric analysis of polymer melt flowing through spiral mandrel die for pipe extrusion. Advances in Polymer Technology, 37(8), 3882-3895

Journal Article Type Article
Acceptance Date Dec 27, 2018
Online Publication Date Jan 29, 2019
Publication Date Dec 31, 2018
Deposit Date Jan 10, 2019
Publicly Available Date Jan 1, 2020
Journal Advances in Polymer Technology
Print ISSN 0730-6679
Electronic ISSN 1098-2329
Publisher Wiley
Peer Reviewed Peer Reviewed
Volume 37
Issue 8
Pages 3882-3895
Keywords Extrusion; Spiral mandrel die; 3D simulation; Polymer melt
Public URL
Publisher URL
Additional Information This is the peer reviewed version of the article, which has been published in final form at This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.


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