SIMULATION OF INTENSITY OF SEGREGATION DISTRIBUTIONS USING 3-DIMENSIONAL FEM ANALYSIS - APPLICATION TO COROTATING TWIN-SCREW EXTRUSION PROCESSING
SIMULATION OF INTENSITY OF SEGREGATION DISTRIBUTIONS USING 3-DIMENSIONAL FEM ANALYSIS - APPLICATION TO COROTATING TWIN-SCREW EXTRUSION PROCESSING
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DOI：
10.1002/app.1995.070580912
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发表时间：
1995-11-28
影响因子：
3
通讯作者：
KALYON, DM
中科院分区：
文献类型：
--
作者：
LAWAL, A;KALYON, DM
对同向旋转双螺杆挤出流动进行了数值模拟，得到了偏析强度的分布以及混合和推进的整体措施。数值模拟的重点是需要应用三维有限元方法求解守恒方程的透镜捏合圆盘单元。通过数值引入示踪剂斑点并跟踪示踪剂粒子的浓度作为位置和时间的函数来确定分离分布的强度。尽管这种流动的动力学性质是混沌的，但分析提供了孪生挤出流动的广泛特征及其混合能力。研究发现，捏合盘的加工特性依赖于错列角，并补充了先前关于停留时间分布和有色示踪剂分析的数值和实验结果。(C)1995 John Wiley&Sons，Inc.
The corotating twin screw extrusion flow is simulated to generate the distributions of intensity of segregation and integral measures of mixing and forwarding. The simulation focused on the lenticular kneading disk elements that necessitated the application of a three-dimensional finite element method to solve the conservation equations. The intensity of segregation distributions were determined by introducing a tracer blob numerically and tracking the concentration of the tracer particles as a function of location and time. In spite of the chaotic nature of the dynamics of this flow, the analyses provided the broad features of twin extrusion flow and its ability to mix. The processing characteristics of kneading disks were found to depend on the stagger angle and complemented earlier numerical and experimental results on residence time distributions and color incorporated tracer analyses. (C) 1995 John Wiley & Sons, Inc.