非啮合双螺杆挤出过程轴向循环流道三维流场分析——轴向循环流场分析(Ⅰ)  

Three-Dimensional Flow Field Analysis of Axial Circle Region in Non-Intermeshing Twin-Screw Extrusion(Ⅰ)

作　　者：马秀清[1] 耿孝正[1] 

机构地区：[1]北京化工大学机械工程学院,北京100029

出　　处：《中国塑料》2001年第2期77-83,共7页China Plastics

基　　金：国家自然科学基金!资助重点项目 (项目批准号 5 97330 70 )

摘　　要：引入了轴向循环流动的概念 ,且利用ANSYS有限元分析软件对非啮合双螺杆挤出机轴向循环流道中的非牛顿流体等温流动进行了三维模拟分析。在得出速度场和压力场的基础上 ,分析了螺杆转速及轴向循环长度对输送特性及混合能力的影响 ,同时还对剪切粘度、剪切速率及剪切应力进行了模拟。Axial circle flow was introduced. The isothermal flow analysis of non-Newtonian fluid in axial circle region of a non-intermeshing counter-rotating twin-screw extruder was concerned. Three-dimensional flow simulation of the axial circle region was performed by FEM package, ANSYS. Based on the calculated pressure and velocity profile, effect of screw rotation speed and axial circle length on pumping characteristic and mixing capabilities of the extruder was analyzed. Shear viscosity, shear rate and shear stress were simulated also.

关 键 词：非啮合双螺杆 挤出 轴向循环流道 流场分析 塑料加工设备 

分 类 号：TQ320[化学工程—合成树脂塑料工业]