计算流体力学在口模设计中的应用  

COMPUTATIONAL FLUID DYNAMICS FOR DIE DESIGN

作　　者：彭炯[1] 陈晋南[1] 

机构地区：[1]北京理工大学化工与材料学院,100081

出　　处：《现代塑料加工应用》2001年第6期31-33,共3页Modern Plastics Processing and Applications

基　　金：国家自然科学基金(59973005)

摘　　要：利用计算流体力学软件包Polyflow,对非牛顿聚合物熔体离开正方形口模的挤出胀大行为进行了详细的讨论。为得到截面为正方形、十字形的挤出件,对相应的口模进行了数值设计。应用计算流体力学(CFD)软件可以对口模的尺寸作出数值预测,减少凭经验修模的次数,缩短开发周期,降低成本。The extrudate swell behavior of a non-Newtonian polymer melt from a square die was studied by using computational fluid dynamics software Polyflow. Dies were numerically designed to form polymeric cxtrudates with desired cross sections such as square and cross. The application of CFD software can make numerical predictions of the geometry of die, decrease the times of the die modification depending on experiences, shorten the development cycle, and reduce the costs.

关 键 词：计算流体力学 离模膨胀 口模设计 数值模拟 塑料加工 挤出成型 

分 类 号：TQ320.5[化学工程—合成树脂塑料工业]