It is of great importance to understand and predict screw characteristics (SC) during the single screw extrusion process for the extruder design and the operation optimization. In order to simulate SC effectively, we introduce the concept of a partial rotational fraction for a partial periodic unit of helical geometry in the metering section of the single screw extruder. In this work, the partial rotational fraction has been implemented with the finite element. We report that simple and accurate computation can be achieved at low computational cost in obtaining the three-dimensional flow field and three-dimensional screw characteristics in terms of material properties with the proposed partial period unit concept in the single screw extruder.

中文翻译：

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使用部分周期单元的单螺杆挤出机中流动的有限元技术

对于单螺杆挤出过程中的挤出机设计和操作优化，了解和预测螺杆特性（SC）至关重要。为了有效地模拟SC，我们在单螺杆挤出机的计量部分中引入了螺旋几何形状的部分周期性单位的部分旋转分数的概念。在这项工作中，部分旋转分数已通过有限元实现。我们报告说，通过在单螺杆挤出机中使用建议的部分周期单元概念，可以在材料性能方面获得三维流场和三维螺杆特性的过程中，以较低的计算成本实现简单，准确的计算。