3-D non-isothermal flow field analysis and mixing performance evaluation of kneading blocks in a co-rotating twin srew extruder
3-D non-isothermal flow field analysis and mixing performance evaluation of kneading blocks in a co-rotating twin srew extruder
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DOI：
10.1002/pen.10781
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发表时间：
2001-05
影响因子：
3.2
通讯作者：
T. Ishikawa;S. Kihara;K. Funatsu
中科院分区：
文献类型：
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作者：
T. Ishikawa;S. Kihara;K. Funatsu
采用有限元法对双螺杆挤出机的三维非牛顿非等温流动进行了分析。该程序可以模拟全螺纹螺杆、捏合块、转子及其组合等多种螺杆元件的全填充部分。还开发了标记颗粒跟踪分析来评估螺杆元件的混合性能。本文对同向旋转TSE中的捏合块进行了模拟。螺杆配置是具有几个交错角和盘宽度的2叶捏合块的组合。研究了螺杆构型对压力和温度分布的影响。我们还通过标记颗粒跟踪分析获得的应力大小和面积拉伸来评估分散和分布混合。此外，我们讨论了理想的交错，盘宽度及其组合，以提高混合性能。
We have developed a three-dimensional non-Newtonian and non-isothermal flow analysis of the twin screw extruder (TSE) using the finite element method. This code can simulate the fully filled parts of several kinds of screw elements, such as full flight screws, kneading blocks, rotors and their combinations. A marker particle tracking analysis has also been developed to evaluate the mixing performance of the screw elements. In this paper, simulations for the kneading blocks in a co-rotating TSE were carried out. The screw configurations are combinations of 2-lobe kneading blocks with several stagger angles and disk widths. The effects of screw configurations on pressure and temperature distributions are examined. We also evaluate the dispersive and distributive mixing via stress magnitude and area stretch obtained by marker particle tracking analysis. Additionally, we discuss the desirable stagger, disk width and their combinations that promote the mixing performance.