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Application of Numerical Simulation Technique to Casting Process of Valve Block

✍ Scribed by Guo-fa MI; Xiang-yu LIU; Kuang-fei WANG; Heng-zhi FU


Book ID
117695953
Publisher
Chinese Electronic Periodical Services
Year
2009
Tongue
English
Weight
799 KB
Volume
16
Category
Article
ISSN
1006-706X

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The film casting process is widely used to produce polymer film: a molten polymer is extruded through a flat die, then stretched in air and cooled on a chill roll. This study is devoted to the extensional flow between the die and the chill roll. The film shows a lateral neck-in as well as an inhomog

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## Abstract The cast film process is studied and a numerical simulation is performed using a finite element method. Two dimensional equations involving the thickness and a mean velocity are used by considering the film as a thin layer. The process is assumed to be isothermal between the die exit an