振动场作用下双波螺杆混炼性能数值模拟  

Numerical Simulation on Mixing Properties of Double Wave Screw Under Vibration Force Field

作　　者：柳天磊 

机构地区：[1]震德塑料机械有限公司,广东佛山528300

出　　处：《工程塑料应用》2014年第3期57-61,共5页Engineering Plastics Application

基　　金：2012年广东省佛山市顺德区院市合作项目(2012YS03)

摘　　要：借助于三维数值模拟思想,对双波螺杆混炼段构建物理简化模型,并应用聚合物流动分析软件POLYFLOW及粒子示踪法对比研究该混炼段在稳态与动态条件下的混炼性能。结果表明,双波螺杆螺槽的特殊结构导致熔体粒子各流场参数波动周期性变化;引入振动场可使熔体粒子受到的压力和作用力降低,并可使流场获得稳定的黏度;存在最佳振动强度,使得波状螺槽内熔体粒子受到剪切作用达到最大值及粒子受力实现稳定降低。With CFD software POLYFLOW, simplified models for double wave screw unit was built, three dimensional numerical simulation was carried out. And finally, using particle tracing manner, the mixing behavior of wave screw mixing unit with and without vibration force field was comparatively analysed. The results show that flow field parameters of the tracing particles change wave-like and periodically due to its special groove structure. Introducing vibration force field can lower the pressure and the acting force that the particles suffer, as well as steady viscosity.There is some vibration intensity for the best shearing action and steadily lowering action force that those melt particles undergo in wave screw groove.

关 键 词：双波螺杆 振动力场 混炼性能 数值模拟 

分 类 号：TQ320.64[化学工程—合成树脂塑料工业]