Computer design aids for non-axis-symmetric profile dies

R. Rakos, A. Kiani, D. H. Sebastian

Research output: Contribution to journalConference articlepeer-review

2 Scopus citations


A new design is proposed to correct the flow imbalance and its experimental performance is compared with the simulation. Behavior of resins with opposing extremes of melt elasticity are contrasted with model predictions. Limits of applicability for commonly used modeling simplifications are examined. The initial results suggest that the model is reasonably accurate in predicting the unbalanced behavior of the die. The calculated and experimentally measured velocity ratios differ by only 30 to 35 percent. This agreement is excellent considering that the model does not take into account elastic effects and does not predict vortices in the entrance region to the profile. The measured and calculated pressure drops differ by approximately 30 percent. This difference is expected when elastic effects are neglected and entrance and exit pressure corrections are not applied.

Original languageEnglish (US)
Pages (from-to)66-68
Number of pages3
JournalAnnual Technical Conference - Society of Plastics Engineers
StatePublished - 1989
Externally publishedYes
EventANTEC 89 - 47th Annual Technical Conference of SPE - New York, NY, USA
Duration: May 1 1989May 4 1989

All Science Journal Classification (ASJC) codes

  • General Engineering


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