力学与实践 ›› 2004, Vol. 26 ›› Issue (4): 0-0.DOI: 10.6052/1000-0992-2003-272

• 应用研究 •    

用PSM模型模拟聚合物熔体的轴对称收缩流动

黄树新 鲁传敬   

  1. 上海交通大学工程力学系 上海交通大学工程力学系 200030
  • 收稿日期:2003-06-22 修回日期:2004-03-15 出版日期:2004-08-10 发布日期:2004-08-10

SIMULATION OF AXISYMMETRIC CONTRACTION FLOW FOR POLYMER MELT BY USING PSM MODEL

  • Received:2003-06-22 Revised:2004-03-15 Online:2004-08-10 Published:2004-08-10

摘要: 采用模拟黏弹流体挤出胀大的方法,计算了IUPAC-LDPE熔体经过4:1轴对称收缩 流道的流动. 计算的相对涡强度、入口校正和文献中的结果基本一致,给出的流场也显示出 计算结果是合理的. 表明该方法能够适用于用积分型PSM模型表征的黏弹流体在 收缩流道内的流动模拟.

关键词: 黏弹聚合物熔体,PSM模型, 轴对称收缩流动,数值模拟

Abstract: Based on the numerical method of die swell for viscoelastic fluid, proposed by the authors, simulations of 4:1 axisymmetric contraction flow for IUPAC-LDPE melt are presented in this paper. The relative vortex intensity and the entrance correction obtained here agree with the results reported in the literatures, and the flow fields are also reasonable. The results in the paper indicate that the method used by the authors is suitable for calculating the entry flow in contraction for viscoelastic polymer melt described by the integral-type PSM constitutive equation.

Key words: viscoelastic polymer melt, PSM model, axisymmetric