OpenFOAM® pp 109-120 | Cite as

Differential Heating as a Strategy for Controlling the Flow Distribution in Profile Extrusion Dies

  • Ananth RajkumarEmail author
  • Luís L. Ferrás
  • Célio Fernandes
  • Olga S. Carneiro
  • Alberto Sacramento
  • J. Miguel Nóbrega


This work presents a simple procedure for balancing the flow in extrusion dies. The method consists in using different temperatures on the different sides of the extrusion die surface, in this way altering the local viscosity of the polymer melt, and thus the melt flow distribution. The design methodology follows a numerical trial-and-error procedure (implemented in OpenFOAM\(^{\circledR }\)), which was assessed with an industrial case study (swimming pool cover profile). The results obtained show that the support of computational tools is an excellent design aid, and a much better alternative to the experimental trial-and-error procedure commonly used in industry.



The authors would like to thank for the funding by FEDER through the COMPETE 2020 Programme, the National Funds through FCT—Portuguese Foundation for Science and Technology under the project UID/CTM/50025/2013. L.L. Ferrás would also like to thank for the funding from FCT through the scholarship SFRH/BPD/100353/2014. The authors would also like to acknowledge the Minho University cluster under the project Search-ON2: Revitalization of HPC infrastructure of UMinho, (NORTE-07-0162-FEDER- 000086), co-funded by the North Portugal Regional Operational Programme (ON.2-0 Novo Norte), under the National Strategic Reference Framework (NSRF), through the European Regional Development Fund (ERDF).


  1. 1.
    Michaeli W (2003) Extrusion Dies for Plastics and Rubber Design and Engineering Computations, Carl Hanser Verlag GmbH & Co. KG, Munich.CrossRefGoogle Scholar
  2. 2.
    Carneiro OS, Nóbrega JM (2012) Design of Extrusion forming Tools, Smithers Rapra Technology Ltd, Shawbury.Google Scholar
  3. 3.
    Gonçalves ND, Carneiro OS, Nóbrega JM (2013) Design of complex profile extrusion dies through numerical modeling. J. Non-Newton. Fluid. Mech. 200:103–110.CrossRefGoogle Scholar
  4. 4.
    Nóbrega JM, Carneiro OS, Oliveira PJ, Pinho FT (2003) Flow Balancing in Extrusion Dies for Thermoplastic Profiles Part I: Automatic Design. Int. Polym. Proc. 18:298–306.CrossRefGoogle Scholar
  5. 5.
    Nóbrega JM, Carneiro OS, Oliveira PJ, Pinho FT (2003) Flow balancing in extrusion dies for thermoplastic profiles Part II: influence of the design strategy. Int. Polym. Proc. 18:307–312.Google Scholar
  6. 6.
    Nóbrega JM, Carneiro OS, Oliveira PJ, Pinho FT (2004) Flow balancing in extrusion dies for thermoplastic profiles Part III: Experimental assessment. Int. Polym. Proc. 19:225–235.CrossRefGoogle Scholar
  7. 7.
    Weller HG, Tabor G, Jasak H, Fureby C (1998) A tensorial approach to computational continuum mechanics using object-oriented techniques. Comput. Phys. 12:620–631.CrossRefGoogle Scholar
  8. 8.
    Rajkumar A, Ferrás LL, Fernandes C, Carneiro OS, Sacramento A, Nóbrega JM (2017) Design Guidelines to Balance the Flow Distribution in Complex Profile Extrusion Dies, Int. Polym. Proc. 32:58–71.CrossRefGoogle Scholar
  9. 9.
    Falck B, Falck D, Collette B (2012) Freecad [How-To], Packt Publishing Ltd, United Kingdom.Google Scholar
  10. 10.
    Ribes A, Caremoli C (2007) Salome platform component model for numerical simulation. Computer Software and Applications Conference (COMPSAC 2007). 2:553–564.Google Scholar
  11. 11.
    Gisen D (2014) Generation of a 3-D Mesh Using SnappyHexMesh Featuring Anisotropic Refinement and Near-Wall Layers. ICHE Conference Proceedings.Google Scholar
  12. 12.
    Rajkumar A (2017) Improved methodologies for the design of extrusion forming tools (Ph.D. thesis), University of Minho, Portugal.Google Scholar

Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  • Ananth Rajkumar
    • 1
    Email author
  • Luís L. Ferrás
    • 1
  • Célio Fernandes
    • 1
  • Olga S. Carneiro
    • 1
  • Alberto Sacramento
    • 2
  • J. Miguel Nóbrega
    • 1
  1. 1.Institute for Polymers and Composites/i3NUniversity of Minho, Campus de AzurémGuimarãesPortugal
  2. 2.Soprefa - Componentes Industriais SAMosteiróPortugal

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