Crossover behaviour during gelation in shear flow

被引:3
作者
Kovacs, T
Bardos, G
机构
[1] Department of Theoretical Physics, Kossuth Lajos University, H-4010 Debrecen
来源
PHYSICA A | 1997年 / 234卷 / 3-4期
基金
匈牙利科学研究基金会;
关键词
D O I
10.1016/S0378-4371(96)00313-5
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
Gelation in shear flow is studied using a two-dimensional, square lattice cluster-cluster aggregation model. The model is similar to that proposed by Santra and Herrmann (1995); however, the rotation of the clusters is to be taken into account. It was found that this modification of the model alters the behaviour of the aggregating system: under a certain length a(cr), the aggregation is isotropic and above a(cr) it becomes anisotropic. It is shown numerically and theoretically that the crossover length a(cr) depends on the concentration as a(cr) similar to c(1/(D-d)), where d is the dimension of the space and D is the fractal dimension of the clusters.
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页码:665 / 675
页数:11
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