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Stability of high‐speed two‐layer film casting of Newtonian fluids
Author(s) -
Zhang Jing,
Khayat Roger E.,
Wang Wei
Publication year - 2006
Publication title -
international journal for numerical methods in fluids
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 112
eISSN - 1097-0363
pISSN - 0271-2091
DOI - 10.1002/fld.1091
Subject(s) - mechanics , newtonian fluid , isothermal process , flow (mathematics) , inertia , materials science , isothermal flow , steady state (chemistry) , buoyancy , non newtonian fluid , generalized newtonian fluid , casting , flow velocity , traction (geology) , stability (learning theory) , thermodynamics , rheology , composite material , physics , engineering , mechanical engineering , classical mechanics , chemistry , open channel flow , computer science , machine learning , shear rate
The steady‐state flow and its linear stability are investigated for the isothermal two‐layer film casting process. Newtonian fluids are considered in this study. The continuity of traction is ensured at the interface, and the axial velocity is assumed to be uniform across each film layer separately. The effects of inertia, gravity, fluid parameters and processing conditions on the steady‐state flow and its stability are studied. The results indicate that the fluid properties and the processing conditions have significant influence on the flow. The flow stability is strongly dependent on the layer layout with respect to the take‐up rolling process. The frequency of the (unstable) disturbance is insensitive to flow and processing parameters. Copyright © 2006 John Wiley & Sons, Ltd.