华南理工大学学报(自然科学版) ›› 2008, Vol. 36 ›› Issue (7): 51-56.

• 化学化工 • 上一篇    下一篇

熔体振动输运中流质混合的模拟及统计分析

蔡永洪孙晓辉2   瞿金平3   

  1. 1. 中国测试技术研究院 广州分院, 广东 广州 510030; 2. 广东白云学院 机电工程系, 广东 广州 510450;3. 华南理工大学 聚合物成型加工工程教育部重点实验室, 广东 广州510640
  • 收稿日期:2007-09-19 修回日期:2008-02-13 出版日期:2008-07-25 发布日期:2008-07-25
  • 通信作者: 蔡永洪(1978-),男,博士,主要从事聚合物加工流变学研究. E-mail:polycai@163.com
  • 作者简介:蔡永洪(1978-),男,博士,主要从事聚合物加工流变学研究.
  • 基金资助:

    国家自然科学基金资助项目(10472034)

Simulation and Statistical Analysis of Fluid Mix During Melt Conveying Under Effect of Vibration

Cai Yong-hong1  Sun Xiao-hui2  Qu Jin-ping3   

  1. 1. Guangzhou Branch of National Institute of Measuring and Testing Technology, Guangzhou 510030, Guangdong, China; 2. Electro-Mechanic Department, Guangdong Baiyun University, Guangzhou 510450, Guangdong, China; 3. The Key Laboratory of Polymer Processing Engineering of the Ministry of Education, South China University of Technology, Guangzhou 510640, Guangdong, China
  • Received:2007-09-19 Revised:2008-02-13 Online:2008-07-25 Published:2008-07-25
  • Contact: 蔡永洪(1978-),男,博士,主要从事聚合物加工流变学研究. E-mail:polycai@163.com
  • About author:蔡永洪(1978-),男,博士,主要从事聚合物加工流变学研究.
  • Supported by:

    国家自然科学基金资助项目(10472034)

摘要: 对标准计量型螺槽内聚合物熔体在振动输运过程中的流质混合进行了数值研究.通过计算流体力学(CFD)软件Polyflow对振动输运流场进行数值计算和仿真模拟,运用统计学方法分析了振动输运流场中反映分布混合效果的流质拉伸率.统计结果显示,振动力场有助于提高输运熔体的均化程度,改善分布混合效果,在模拟频率范围内混合程度随频率提高而增强,但振幅存在最佳值.

关键词: 聚合物, 熔体, 混合, 模拟, 振动

Abstract:

The fluid mix during the polymer melt conveying under the effect of vibration in a standard metering screw channel was numerically investigated, and the melt conveying under the effect of vibration was calculated and simulated by using the computational fluid dynamics (CFD) software Polyflow. Moreover, the stretching rate of the fluid reflecting the effect of distributing mix was analyzed via statistical analysis. Statistical results indicate that the vibration force field helps to enhance the homogenization of the melt and to improve the effect of distributing mix, and that, in the simulated frequency range, the mix degree improves with the vibration frequency up to an optimal value.

Key words: polymer, melt, mix, simulation, vibration