摘要
对于不可压缩粘性流体在复杂流道中的流动分布,本文介绍一种数值计算方法。其适用条件是流体流动的主要速度分量平行于流道轴线且为稳态、等温、充分发展的层流流动,流体可以是牛顿流体或非牛顿流体。在聚合物加工中遇到的许多复杂流道,如扁平挤出机头、过滤器等一般都是满足这个条件的。计算实例表明:该方法易于在微型计算机上实现,对于幂律指数n小于1.0的流体是收敛的,并且能较快得到精度满意的结果。
A numerical method is presented for calculating the slow viscous flow
distribution in systems of complicated passages, of which the major velocity components are substantially parallel to the axes of those passages.
The passages are subdivided in this method and substituted by a network
of resistances.A few unknowns are introduced at one end of the network,
which, using a recursion matrix marching routine, are solved at the
other end.
出处
《北京服装学院学报（自然科学版）》
CAS
北大核心
1990年第1期74-81,共8页
Journal of Beijing Institute of Fashion Technology：Natural Science Edition
关键词
流动分布
数值计算
网络法
flow analysis
numerical calculation
network method
