Transient solutions of the dynamics of film casting process using a 2-D viscoelastic model

Ju Min Kim, Joo Sung Lee, Dong Myeong Shin, Hyun Wook Jung, Jae Chun Hyun

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

The nonlinear transient dynamics and stability of a two-dimensional (2-D) model of the isothermal film casting process have been investigated using newly devised simulation techniques employing finite element methods (FEM), which can incorporate the viscoelastic nature of polymer melts as well as the Newtonian features of other fluids. To effectively solve the time-dependent free surface problem of this system, the Arbitrary Lagrangian Eulerian (ALE) algorithm together with a spine method well-suited for free surface tracking was incorporated. Adopting robust numerical stabilization techniques for the hyperbolic system of extensional deformation processes in this study, the transient dynamic behavior of viscoelastic fluids in the 2-D film casting process are presented for the first time in the literature. It is also demonstrated that simulation models in the present study can successfully describe the basic flow behavior of the system including the three instability modes therein, i.e., draw resonance, neck-in, and development of edge beads.

Original languageEnglish
Pages (from-to)53-60
Number of pages8
JournalJournal of Non-Newtonian Fluid Mechanics
Volume132
Issue number1-3
DOIs
Publication statusPublished - 2005 Dec 15

Fingerprint

Transient Solution
Viscoelastic Model
Casting
Transient Dynamics
hyperbolic systems
Free Surface
spine
Fluids
Polymer melts
fluids
beads
Polymer Melts
finite element method
Transient Behavior
Stabilization
simulation
Spine
Viscoelastic Fluid
stabilization
Nonlinear Stability

Keywords

  • ALE
  • Draw resonance
  • Edge beads
  • FEM
  • Film casting
  • Neck-in
  • Spine method
  • Stability
  • Transient behavior
  • Viscoelastic fluids

ASJC Scopus subject areas

  • Fluid Flow and Transfer Processes

Cite this

Transient solutions of the dynamics of film casting process using a 2-D viscoelastic model. / Kim, Ju Min; Lee, Joo Sung; Shin, Dong Myeong; Jung, Hyun Wook; Hyun, Jae Chun.

In: Journal of Non-Newtonian Fluid Mechanics, Vol. 132, No. 1-3, 15.12.2005, p. 53-60.

Research output: Contribution to journalArticle

Kim, Ju Min ; Lee, Joo Sung ; Shin, Dong Myeong ; Jung, Hyun Wook ; Hyun, Jae Chun. / Transient solutions of the dynamics of film casting process using a 2-D viscoelastic model. In: Journal of Non-Newtonian Fluid Mechanics. 2005 ; Vol. 132, No. 1-3. pp. 53-60.
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