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Nonisothermal comprehensive 3D analysis of polymer melt flow in a coat‐hanger die
Author(s) -
Wu Tingqi,
Jiang Bo,
Xu Shuhua,
Bi Chao
Publication year - 2006
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.20419
Subject(s) - materials science , die (integrated circuit) , flow (mathematics) , isobar , thermal conduction , mechanics , shear flow , composite material , shear (geology) , mechanical engineering , thermodynamics , engineering , nanotechnology , physics , nucleon , atomic physics
The nonisothermal flow of Carreau fluid in a coat‐hanger die is studied. A general three‐dimensional finite volume code is developed for the purpose of flow analysis. The isobars, the isotherms, and the velocity distribution are obtained. Simulation results illustrated that the highest temperature occurred by the center of manifold, rather than the die‐lip region because of the combined effects of high shear rate and poor heat conduction, which is important for processing those heat‐sensitive materials. In the regions where die gap is relatively small, the wall temperature plays a key role in deciding temperature distribution in the melt. The validity of simulation results is verified experimentally. POLYM. ENG. SCI., 46:406–415, 2006. © 2006 Society of Plastics Engineers.