SIMULATION OF FLOW OF SHORT FIBER SUSPENSIONS THROUGH A PLANAR CONTRACTION
SIMULATION OF FLOW OF SHORT FIBER SUSPENSIONS THROUGH A PLANAR CONTRACTION
复制标题
短纤维悬浮液通过平面收缩流动的模拟
DOI：
10.1016/j.scient.2012.04.008
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发表时间：
2012
期刊：
影响因子：
1.4
通讯作者：
H. H. Amoli
中科院分区：
文献类型：
--
作者：
M. Yazdi;A. Kamyabi;H. H. Amoli
在这项研究中，通过平面收缩纤维填充的粘弹性基质的流动进行了研究。结果发现，通过将纤维添加到基体涡流中，强度增加。还研究了纤维沿沿着“x”和“y”轴的取向。有人发现，纤维取向可以用于确定通过收缩几何的流动状态。纤维的刚性条件要求取向张量的迹在域内处处为1，除了靠近壁和凹角处略小于1外，该条件是正确的。在这些区域中，应力幅值较高，这导致更多的数值误差，并且这进一步导致在预测取向张量时的一些误差。本文还研究了第一法向应力差沿着不同轴向的分布规律。结果表明，随着纤维体积浓度的增加，第一法向应力差增大。
In this study, the flow of a fiber filled viscoelastic matrix through planar contractions is investigated. It was found that by adding fiber to the matrix vortex, the intensity increases. Fiber orientation along “x” and “y” axes was studied too. It was found that fiber orientation could be used for determining the flow regime through the contraction geometry. The rigidity condition of fibers, which needs the trace of the orientation tensor to be unity everywhere in the domain, is correct except near walls and the reentrant corner, which is slightly less than one. In these regions, the stress magnitude is higher, which results in more numerical errors, and which further leads to some error in predicting the orientation tensor. The first normal stress difference distribution along different axes was also studied in this article. It was found that increasing the volume concentration of fibers results in first normal stress difference intensification.