Numerical Simulation of Extrusion Characteristics for Co-rotating Tri-Screw Extruder
Numerical Simulation of Extrusion Characteristics for Co-rotating Tri-Screw Extruder
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DOI：
10.1080/03602550701242919
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发表时间：
2007-03
影响因子：
--
通讯作者：
X. Z. Zhu;Y. Xie;H. Yuan
中科院分区：
文献类型：
--
作者：
X. Z. Zhu;Y. Xie;H. Yuan
采用有限元法对聚乙烯熔体在新型三螺杆挤出机中的流动进行了数值模拟。通过分析速度、压力和停留时间分布（RTD），对中心区域的流动进行了专门研究。比较了三螺杆挤出机与双螺杆挤出机的挤出特性，即物料输送能力、混合能力和功率消耗。结果表明，三螺杆挤出机在物料输送和混合方面比双螺杆挤出机具有更好的操作能力和更高的生产率。
The flow of polyethylene melt in new tri-screw extruder was simulated using the finite element method (FEM). A special study of flow in central region was performed by analysis of the velocity, pressure, and resident time distribution (RTD). The extrusion characteristics of tri-screw extruder, namely the abilities of material conveying, mixing, and power consumption, were compared with those of twin screw extruder. The results showed that there was circumfluence in central region but no stagnation in it. Tri-screw extruder had better operative abilities and high productivity ratio than twin screw extruder in the aspect of material conveying and mixing.