Convective instabilities of chemical fronts in close-packed porous media

被引：3
|
作者：
Schuszter, Gabor [1 ]
Horvath, Dezso [1 ]
Toth, Agota [1 ]
机构：
[1] Univ Szeged, Dept Phys Chem & Mat Sci, H-6720 Szeged, Hungary
来源：
CHEMICAL PHYSICS LETTERS | 2012年 / 546卷
基金：
匈牙利科学研究基金会;
关键词：
REACTION-DIFFUSION FRONTS; PROPAGATION;
D O I：
10.1016/j.cplett.2012.07.038
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Spatiotemporal pattern formation in the autocatalytic chlorite-tetrathionate reaction is studied experimentally in porous media where heterogeneities are introduced as glass beads packed in a monolayer. From initially vertical planar chemical fronts in a vertical slab, asymmetric convective structures with stable geometry evolve which propagate horizontally with constant speed. The single convection roll is characterized by its mixing length which scales with both the solution height and the permeability of the system. (C) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码：63 / 66
页数：4
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