A self‐wiping co‐rotating twin‐screw extruder (TSE) is operated in a starved state in which the screws are partially filled with resin. Understanding the resin distribution on the screw surface of a TSE in this state is essential for the design, operation, and maintenance of the twin‐screw extrusion process. Accordingly, in this study, the circumferential and axial distribution of resin in a TSE were simulated using a novel method combining the mathematical formulation of Hele–Shaw flow, the finite element method, and a newly developed down‐wind pressure updating scheme. The results of the simulation were found to be in good agreement with experimental measurements. The proposed simulation method enables the detailed visualization of resin distribution in the entire axial and circumferential directions over the length of a TSE, improving the ability to determine both the devolatilization and fiber attrition during the extrusion process.

中文翻译：

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自擦同向平行双螺杆挤出机沿轴向和圆周方向的树脂分布

自擦式同向双螺杆挤出机（TSE）在饥饿状态下运行，其中螺杆部分填充有树脂。在这种状态下，了解TSE螺杆表面上的树脂分布对于双螺杆挤出工艺的设计，操作和维护至关重要。因此，在这项研究中，使用结合了Hele-Shaw流的数学公式，有限元方法和新开发的顺风压力更新方案的新方法，模拟了TSE中树脂的周向和轴向分布。发现仿真结果与实验测量结果非常吻合。所提出的模拟方法可以在TSE的整个长度上详细显示整个轴向和圆周方向上的树脂分布，