不同形状型腔内纤维取向的有限体积法求解  

Numerical Simulation of Fiber Orientation in Different Shapes Injection Mould Cavity by Finite Volume Method

作　　者：陈雄兵[1,2] 何红[1,2] 王克俭[1,2] 

机构地区：[1]北京化工大学机电工程学院,北京100029 [2]高分子材料加工装备教育部工程研究中心,北京100029

出　　处：《塑料》2013年第6期83-87,共5页Plastics

摘　　要：采用有限体积法对表征纤维悬浮流中纤维取向概率分布情况的Fokker-Planck方程进行了数值求解,以二阶张量分量来表示纤维在空间不同方位的取向分布,预测了不同形状注射型腔:规则的中心入口圆盘、长方体模腔、以及复杂的哑铃状模腔内纤维取向分布情况,克服采用封闭近似处理高阶张量时给计算结果精度带来的误差。The Fokker-Planck equation,which represented the fiber orientation probability distribution in fiber suspension was solved by Finite Volume Method, and the 2th-order tensor was used to quantitatively describe the fiber orientation distribution in three dimensional flow field. Finally the fiber orientation distribution in different shape injection mould cavities： center inlet disk,cuboid cavity and dumbbell cavity were predicted. And computational errors from the closure approximation could be avoided.

关 键 词：纤维取向概率分布函数 纤维悬浮流 取向张量 注射型腔 有限体积法 

分 类 号：TQ340.1[化学工程—化纤工业]