Nonlinear interactions in the density fingering of an acidity front
Nonlinear interactions in the density fingering of an acidity front
Density fingering of the chlorite-tetrathionate reaction has been studied experimentally in a Hele-Shaw cell. The initially emerging cellular structure transforms into a single cell with constant—asymmetric and symmetric—shape in narrow reaction vessels. The interactions of fingers in wider Hele-Shaw cells lead to the coarsening of the patterns, however, splitting of fingers is observed as well. The long time evolution has been quantitatively described by the change in the mixing length, i.e., the amplitude of the patterns, and by the power-averaged cell number of the structures.
11912–11915
Bánsági, Tamás
3984187d-60fd-47f2-b6cb-f312dcedadae
Horváth, Dezsö
6257d7d2-1995-48d7-866b-1e9e68e30c3f
Tóth, Ágota
0fec3cc5-69fa-4377-9140-46a2f9c04cbb
15 December 2004
Bánsági, Tamás
3984187d-60fd-47f2-b6cb-f312dcedadae
Horváth, Dezsö
6257d7d2-1995-48d7-866b-1e9e68e30c3f
Tóth, Ágota
0fec3cc5-69fa-4377-9140-46a2f9c04cbb
Bánsági, Tamás, Horváth, Dezsö and Tóth, Ágota
(2004)
Nonlinear interactions in the density fingering of an acidity front.
The Journal of Chemical Physics, 121 (23), .
(doi:10.1063/1.1814078).
Abstract
Density fingering of the chlorite-tetrathionate reaction has been studied experimentally in a Hele-Shaw cell. The initially emerging cellular structure transforms into a single cell with constant—asymmetric and symmetric—shape in narrow reaction vessels. The interactions of fingers in wider Hele-Shaw cells lead to the coarsening of the patterns, however, splitting of fingers is observed as well. The long time evolution has been quantitatively described by the change in the mixing length, i.e., the amplitude of the patterns, and by the power-averaged cell number of the structures.
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Published date: 15 December 2004
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Local EPrints ID: 505690
URI: http://eprints.soton.ac.uk/id/eprint/505690
ISSN: 0021-9606
PURE UUID: 7c1d3209-8694-48d7-994e-0742ed0fc5ce
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Date deposited: 16 Oct 2025 16:49
Last modified: 17 Oct 2025 02:17
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Author:
Tamás Bánsági
Author:
Dezsö Horváth
Author:
Ágota Tóth
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