Modeling and simulation of the solids conveying and unfilled regions in polymer extrusion

Yogesh Jaluria, Yan Liu, R. V. Chiruvella

Research output: Contribution to journalArticlepeer-review

6 Scopus citations


This paper considers the important aspects of solids conveying and unfilled channels in a single screw extruder. An analytical and numerical study is carried out to obtain the compaction of powdery material as it is conveyed downstream. The associated temperature and pressure rise are also determined. The effects of operating conditions, extruder geometry and friction factors at the surface are studied. For unfilled regions, experimental data are used to obtain an expression for the filled channel length. The flow in the filled region of the extruder is simulated to obtain the pressure and temperature rise, along with other quantities. Comparisons with experimental results on both of these aspects show good agreement. The results obtained will be useful in the simulation of the entire extrusion process.

Original languageEnglish (US)
Pages (from-to)15-26
Number of pages12
JournalJournal of Reinforced Plastics and Composites
Issue number1
StatePublished - Jan 1 1999

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Mechanics of Materials
  • Mechanical Engineering
  • Polymers and Plastics
  • Materials Chemistry


  • Powder
  • Single screw
  • Solids conveying
  • Unfilled channels

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