Fingering of chemical fronts in porous media

被引：132
|
作者：
De Wit, A
机构：
[1] Free Univ Brussels, Serv Chim Phys, B-1050 Brussels, Belgium
[2] Free Univ Brussels, Ctr Nonlinear Phenomena & Complex Syst, B-1050 Brussels, Belgium
来源：
PHYSICAL REVIEW LETTERS | 2001年 / 87卷 / 05期
关键词：
D O I：
10.1103/PhysRevLett.87.054502
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The influence of chemical reactions on the hydrodynamical fingering instability is analyzed for miscible systems in porous media. Using a realistic reaction scheme, it is shown that the stability of chemical fronts towards density fingering crucially depends on the width and the speed of the front which are functions of chemical parameters. The major difference between the pure and chemically driven fingering is that, in the presence of chemical reactions, the dispersion curves do not vary in time which has important practical experimental consequences. Good agreement with recent experimental data is found.
引用
收藏
页码：54502 / 1
页数：4
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