Numerical Simulation of Polymer Flows in Coat-Hanger Die Using Wagner Constitutive Model

Abstract:

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An understanding of flow behavior of polymer melts through a slit die is extremely important for optimizing die design. In this paper numerical simulations have been undertaken for the flow of linear low-density polyethylene through Coat-hanger sheet dies. A new finite element method is proposed to simulate the flow in slit channel using Wagner constitutive model. This is one kind of finite element semi-analytical method by which the velocity distributions in thickness direction is approach by Fourier series. Numerical results of volumetric flow and pressure in coat-hanger dies are given to compare to the three-dimensional simulation using the finite element method. It appears that numerical solutions are as accurate as the complete 3D calculations and the computing time can be saved.

Info:

Periodical:

Advanced Materials Research (Volumes 189-193)

Edited by:

Zhengyi Jiang, Shanqing Li, Jianmin Zeng, Xiaoping Liao and Daoguo Yang

Pages:

1941-1945

DOI:

10.4028/www.scientific.net/AMR.189-193.1941

Citation:

Y. Li and J. R. Zheng, "Numerical Simulation of Polymer Flows in Coat-Hanger Die Using Wagner Constitutive Model", Advanced Materials Research, Vols. 189-193, pp. 1941-1945, 2011

Online since:

February 2011

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$35.00

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