A three-dimensional flow analysis of film/ sheet extrusion dies coupled with die body deflection analysis

Dastan Igali, Asma Perveen, Dongming Wei, Dichuan Zhang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The coat-hanger dies are widely used in the plastic film and sheet extrusion industry. The quality of the product and power requirements of the extrusion machine depend on the flow homogeneity at the exit and pressure drop, respectively. For die manufacturers, designing the die capable of providing uniform flow at the die outlet and low pressure drop is particularly challenging. However, many numerical studies conducted on the analysis of the die pressure drop and exit flow homogeneity do not consider the deformation of the die body. This study revealed how very small displacement of the die slit may distort the flow homogeneity and increase the pressure drop. The two-way coupled fluid-structure interaction approach was proposed using the Ansys Fluent and Ansys Static-Structural software programs to study the flow behaviour in the die subjected to deformation.

Original languageEnglish
Title of host publicationProceedings of the 20th International Conference of the European Society for Precision Engineering and Nanotechnology, EUSPEN 2020
EditorsRichard K. Leach, David Billington, C. Nisbet, D. Phillips
Publishereuspen
Pages471-472
Number of pages2
ISBN (Electronic)9780995775176
Publication statusPublished - 2020
Event20th International Conference of the European Society for Precision Engineering and Nanotechnology, EUSPEN 2020 - Geneva, Virtual, Austria
Duration: Jun 8 2020Jun 12 2020

Publication series

NameProceedings of the 20th International Conference of the European Society for Precision Engineering and Nanotechnology, EUSPEN 2020

Conference

Conference20th International Conference of the European Society for Precision Engineering and Nanotechnology, EUSPEN 2020
CountryAustria
CityGeneva, Virtual
Period6/8/206/12/20

Keywords

  • Coat-hanger die
  • Die deformation
  • Flow homogeneity
  • Fluid-structure interaction
  • Polymer extrusion
  • Pressure drop

ASJC Scopus subject areas

  • Instrumentation
  • Industrial and Manufacturing Engineering
  • Materials Science(all)
  • Environmental Engineering
  • Mechanical Engineering

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