FINITE-DIFFERENCE ANALYSIS OF GROWTH AND DECAY OF A FREEZE COAT ON A CONTINUOUS MOVING CYLINDER
作者:
F. B. Cheung,
S. W. Cha,
期刊:
Numerical Heat Transfer
(Taylor Available online 1987)
卷期:
Volume 12,
issue 1
页码: 41-56
ISSN:0149-5720
年代: 1987
DOI:10.1080/10407788708913573
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
The process of freeze coating of a polymeric melt on an axially moving continuous cylinder is studied numerically by a finite-difference method, taking into account heat convection from the melt to the freeze coat and spatial variation of the cylinder temperature. The solid-liquid interface location is immobilized in the finite-difference analysis of the problem by transforming the system of equations governing the behavior of the freeze coat and the cylinder temperature into a dimensionless space. Various controlling parameters of the system are identified and their effects on the growth-and-decay behavior of the freeze coat are determined. Also determined are the maximum freeze-coat thickness and the corresponding axial location, based on which criteria for selection of the optimum freeze-coating operation conditions are established. The accuracy of the computational scheme is demonstrated by comparing the numerical results with the similarity solutions that are valid at small dimensionless axial locations.
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