Numerical simulation on the mixing behavior of double-wave screw under speed sinusoidal pulsating enhancement induced by differential drive

IF 1.7 4区工程技术 Q4 POLYMER SCIENCE

Journal of Polymer Engineering Pub Date : 2023-10-20 DOI:10.1515/polyeng-2022-0318

Tian-lei Liu, Yao-xue Du, Xian-yun He

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引用次数: 0

Abstract

Abstract A novel speed sinusoidal pulsating system is designed by applying differential drive, which is loaded on the plasticizing screw in an extruder or in an injection molding machine. With the CFD software ANSYS POLYFLOW 19.2, this paper builds simplified physical and mesh models for the double wave screw unit, carries out numerical simulation by using particle tracing manner, and finally analyses comparatively the mixing behavior of the wave screw mixing unit with and without sinusoidal pulsating field. It is found that the mixing screw unit with the superimposed excitation field takes on lower transportation efficiency and a descending melt pressure, while there are different reactions on the various pulsating amplitude and frequency for the max shear rate and mixing index. On the other hand, the introducing pulsating field can strengthen the shear field and gain a higher mixing efficiency. The results are of great importance and reference for improving the plasticizing performance and engineering application of the speed pulsating system.

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差动驱动速度正弦脉动增强下双波螺杆混流特性的数值模拟

摘要设计了一种新型的速度正弦脉动系统，该系统采用差动驱动加载在挤出机或注塑机的塑化螺杆上。利用CFD软件ANSYS POLYFLOW 19.2，对双波螺杆装置建立简化的物理模型和网格模型，采用粒子追踪的方式进行数值模拟，最后对比分析了有正弦脉动场和无正弦脉动场时波螺杆混合装置的混合行为。结果表明，叠加激励场的混合螺杆装置输送效率较低，熔体压力下降，但不同脉动幅值和频率对最大剪切速率和混合指数的影响不同。另一方面，引入脉动场可以增强剪切场，获得更高的混合效率。研究结果对提高转速脉动系统的塑化性能和工程应用具有重要的参考意义。

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来源期刊

Journal of Polymer Engineering 工程技术-高分子科学

CiteScore

3.20

自引率

5.00%

发文量

审稿时长

2.5 months

期刊介绍： Journal of Polymer Engineering publishes reviews, original basic and applied research contributions as well as recent technological developments in polymer engineering. Polymer engineering is a strongly interdisciplinary field and papers published by the journal may span areas such as polymer physics, polymer processing and engineering of polymer-based materials and their applications. The editors and the publisher are committed to high quality standards and rapid handling of the peer review and publication processes.