Stability and nonlinear dynamics of film blowing

Hyunchul Kim, Joo Sung Lee, Hyun Wook Jung, Jae Chun Hyun

Research output: Contribution to conferencePaperpeer-review


Transient behavior and stability of the film blowing process have been studied using the governing equations consisting of two well-known force balances and a Phan-Thien and Tanner constitutive equation. A newly-devised numerical scheme, which incorporates an orthogonal collocation on finite elements, was employed to yield transient solutions of the film blowing operation which are hitherto difficult to obtain due to severe numerical stability problems when the system is in an instability called draw resonance. Thus obtained simulation results make possible more systematic analysis of draw resonance, e.g., draw resonance criterion based on the traveling times of kinematic waves on the free surfaces, and the effects of fluid viscoelasticity on the stability.

Original languageEnglish
Number of pages5
Publication statusPublished - 2003
Event61st Annual Technical Conference ANTEC 2003 - Nashville, TN, United States
Duration: 2003 May 42003 May 8


Other61st Annual Technical Conference ANTEC 2003
Country/TerritoryUnited States
CityNashville, TN


  • Draw resonance
  • Nonlinear dynamics
  • OCFE
  • PTT fluid
  • Stability
  • Transient simulation
  • Tubular film blowing

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Polymers and Plastics


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