Transient solutions of the dynamics in film blowing processes

Jae Chun Hyun; Hyunchul Kim; Joo Sung Lee; Hyun Seob Song; Hyun Wook Jung

doi:10.1016/j.jnnfm.2004.06.004

Transient solutions of the dynamics in film blowing processes

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

Research output: Contribution to journal › Article › peer-review

35 Citations (Scopus)

Abstract

The transient behavior and stability of film blowing have been investigated solving the governing equations consisting of the movingboundary partial differential equations. Incorporating an orthogonal collocation on finite elements and a coordinate transformation, a new numerical scheme was devised to obtain previously unavailable transient solutions. The scheme overcomes severe numerical problems, that are encountered especially when the process is in a periodic oscillation called draw resonance. These simulation results provide, for the first time, temporal pictures which are close to those observed experimentally, and enable a systematic analysis of the process as regards its stability, multiplicity, sensitivity and stabilization strategies.

Original language	English
Pages (from-to)	157-162
Number of pages	6
Journal	Journal of Non-Newtonian Fluid Mechanics
Volume	121
Issue number	2-3
DOIs	https://doi.org/10.1016/j.jnnfm.2004.06.004
Publication status	Published - 2004 Aug 20

Bibliographical note

Funding Information:
This study was supported by research grants from the Korea Science and Engineering Foundation (KOSEF) through the Applied Rheology Center (ARC), an official KOSEF-created engineering research center (ERC) at Korea University, Seoul, Korea.

Copyright:
Copyright 2008 Elsevier B.V., All rights reserved.

Keywords

Coordinate transformation
Draw resonance
Film blowing
Linear stability analysis
Multiplicity of steady states
Orthogonal collocation
Stability diagram
Transient response

ASJC Scopus subject areas

General Chemical Engineering
General Materials Science
Condensed Matter Physics
Mechanical Engineering
Applied Mathematics

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10.1016/j.jnnfm.2004.06.004

Cite this

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title = "Transient solutions of the dynamics in film blowing processes",

abstract = "The transient behavior and stability of film blowing have been investigated solving the governing equations consisting of the movingboundary partial differential equations. Incorporating an orthogonal collocation on finite elements and a coordinate transformation, a new numerical scheme was devised to obtain previously unavailable transient solutions. The scheme overcomes severe numerical problems, that are encountered especially when the process is in a periodic oscillation called draw resonance. These simulation results provide, for the first time, temporal pictures which are close to those observed experimentally, and enable a systematic analysis of the process as regards its stability, multiplicity, sensitivity and stabilization strategies.",

keywords = "Coordinate transformation, Draw resonance, Film blowing, Linear stability analysis, Multiplicity of steady states, Orthogonal collocation, Stability diagram, Transient response",

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AU - Kim, Hyunchul

AU - Lee, Joo Sung

AU - Song, Hyun Seob

AU - Jung, Hyun Wook

N1 - Funding Information: This study was supported by research grants from the Korea Science and Engineering Foundation (KOSEF) through the Applied Rheology Center (ARC), an official KOSEF-created engineering research center (ERC) at Korea University, Seoul, Korea. Copyright: Copyright 2008 Elsevier B.V., All rights reserved.

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N2 - The transient behavior and stability of film blowing have been investigated solving the governing equations consisting of the movingboundary partial differential equations. Incorporating an orthogonal collocation on finite elements and a coordinate transformation, a new numerical scheme was devised to obtain previously unavailable transient solutions. The scheme overcomes severe numerical problems, that are encountered especially when the process is in a periodic oscillation called draw resonance. These simulation results provide, for the first time, temporal pictures which are close to those observed experimentally, and enable a systematic analysis of the process as regards its stability, multiplicity, sensitivity and stabilization strategies.

AB - The transient behavior and stability of film blowing have been investigated solving the governing equations consisting of the movingboundary partial differential equations. Incorporating an orthogonal collocation on finite elements and a coordinate transformation, a new numerical scheme was devised to obtain previously unavailable transient solutions. The scheme overcomes severe numerical problems, that are encountered especially when the process is in a periodic oscillation called draw resonance. These simulation results provide, for the first time, temporal pictures which are close to those observed experimentally, and enable a systematic analysis of the process as regards its stability, multiplicity, sensitivity and stabilization strategies.

KW - Coordinate transformation

KW - Draw resonance

KW - Film blowing

KW - Linear stability analysis

KW - Multiplicity of steady states

KW - Orthogonal collocation

KW - Stability diagram

KW - Transient response

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ER -

Transient solutions of the dynamics in film blowing processes

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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