Fingering of chemical fronts in porous media

被引：137

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.

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页码：54502 / 1

页数：4

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共 40 条

[1] Growth rates of the buoyancy-driven instability of an autocatalytic reaction front in a narrow cell [J].

Böckmann, M ;

Müller, SC .

PHYSICAL REVIEW LETTERS, 2000, 85 (12) :2506-2509

[2]

BOCKMANN M, COMMUNICATION

[3] Miscible rectilinear displacements with gravity override. Part 2. Heterogeneous porous media [J].

Camhi, E ;

Meiburg, E ;

Ruith, M .

JOURNAL OF FLUID MECHANICS, 2000, 420 :259-276

[4] Convective fingering of an autocatalytic reaction front [J].

Carey, MR ;

Morris, SW ;

Kolodner, P .

PHYSICAL REVIEW E, 1996, 53 (06) :6012-6015

[5] Miscible porous media displacements in the quarter five-spot configuration. Part 1. The homogeneous case [J].

Chen, CY ;

Meiburg, E .

JOURNAL OF FLUID MECHANICS, 1998, 371 :233-268

[6] Viscous fingering in reaction-diffusion systems [J].

De Wit, A ;

Homsy, GM .

JOURNAL OF CHEMICAL PHYSICS, 1999, 110 (17) :8663-8675

[7] FINGERING INSTABILITY OF GRAVITY CURRENTS IN THIN-LAYER ELECTROCHEMICAL DEPOSITION [J].

DEBRUYN, JR .

PHYSICAL REVIEW LETTERS, 1995, 74 (24) :4843-4846

[8] Viscous fingering in periodically heterogeneous porous media .1. Formulation and linear instability [J].

DeWit, A ;

Homsy, GM .

JOURNAL OF CHEMICAL PHYSICS, 1997, 107 (22) :9609-9618

[9] Plume and finger regimes driven by an exothermic interfacial reaction [J].

Eckert, K ;

Grahn, A .

PHYSICAL REVIEW LETTERS, 1999, 82 (22) :4436-4439

[10] ONSET OF CONVECTION FOR AUTOCATALYTIC REACTION FRONTS - LATERALLY UNBOUNDED SYSTEM [J].

EDWARDS, BF ;

WILDER, JW ;

SHOWALTER, K .

PHYSICAL REVIEW A, 1991, 43 (02) :749-760

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