TY - JOUR
T1 - Transient solutions of the dynamics in film blowing processes
AU - Hyun, Jae Chun
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.
PY - 2004/8/20
Y1 - 2004/8/20
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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U2 - 10.1016/j.jnnfm.2004.06.004
DO - 10.1016/j.jnnfm.2004.06.004
M3 - Article
AN - SCOPUS:4243128359
SN - 0377-0257
VL - 121
SP - 157
EP - 162
JO - Journal of Non-Newtonian Fluid Mechanics
JF - Journal of Non-Newtonian Fluid Mechanics
IS - 2-3
ER -