Numerical Simulation of Correlation between the Configuration of a Channel and Solidification Process of Molten Polymer
| Autor: | Yasuhiko Hirao, Toshio Aihara, Yoshiaki Aoki, Masami Taniguchi |
|---|---|
| Rok vydání: | 1997 |
| Předmět: |
Polypropylene
chemistry.chemical_classification Engineering drawing Materials science Computer simulation Flow (psychology) Polymer law.invention Physics::Fluid Dynamics chemistry.chemical_compound chemistry law Scientific method Composite material Crystallization Layer (electronics) Communication channel |
| Zdroj: | Seikei-Kakou. 9:750-756 |
| ISSN: | 1883-7417 0915-4027 |
| DOI: | 10.4325/seikeikakou.9.750 |
| Popis: | Solidification process of molten polymer was simulated with a numerical simulation program developed by considering non-Newtonian flow and crystallization simultaneously. In our crystallization model, effects of non-isothermal and stress-induced crystallization kinetics were taken into account. We studied solidification process of molten polypropylene, a crystalline plastic, flowing in an abrupt expansion channel, an abrupt contraction channel, a channel with projections, and a channel with cavities. Various height and depth of the expansion, the contraction, the projections, and the cavities were used in the simulation as parameters. It was found that the skin layer formed on the wall downstream from the abrupt expansion or projections became thicker than one formed on the wall of a flat channel. On the other hand, the skin layer formed on the wall downstream from the abrupt contraction became thinner than one formed on the wall of a flat channel. |
| Databáze: | OpenAIRE |
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