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논문 기본 정보

자료유형
학술저널
저자정보
Kim, Jongman (School of Materials Science and Engineering, Seoul National University) Youn, Jae-Ryoun (School of Materials Science and Engineering, Seoul National University) Hyun, Jae-Chun (Department of Chemical Engineering, Korea University)
저널정보
한국유변학회 Korea-Australia rheology journal Korea-Australia rheology journal 제13권 제2호
발행연도
2001.1
수록면
97 - 106 (10page)

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초록· 키워드

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Three-dimensional flow analysis was performed by using the control volume finite-element method for design of a profile extrusion die. Because polymer melt behavior is complicated and cross-sectional shape of the profile extrusion die is changing continuously, the fluid flow within the die must be analyzed three-dimensionally. A commercially available polypropylene is used for theoretical and experimental investigations. Material properties are assumed to be constant except for the viscosity. The 5-constant modified Cross model is used for the numerical analysis. A test problem is examined in order to verify the accuracy of the numerical method. Simulations are performed for conditions of three different screw speeds and three different die temperatures. Predicted pressure distribution is compared with the experimental measurements and the results of the previous two-dimensional study. The computational results obtained by using three dimensional CVFEM agree with the experimental measurements and are more accurate than those obtained by using the two-dimensional cross-sectional method. The velocity profiles and the temperature distributions within several cross-sections of the die are given as contour plots.

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