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Title: Fluctuation-dominated kinetics under stirring
Author: Reigada Sanz, Ramon
Sagués i Mestre, Francesc
Sokolov, Igor M., 1958-
Sancho, José M.
Blumen, Alexander
Keywords: Química física
Física estadística
Dinàmica de fluids
Chemistry, Physical and theoretical
Statistical physics
Fluid dynamics
Issue Date: 1997
Publisher: American Physical Society
Abstract: We investigate the effects of stirring on the kinetics of the A + B → 0 reaction under stoichiometrical conditions in 2D. We consider both a steady eddy-lattice flow and a random flow mimicking turbulence. In both situations complex decay patterns are detected. Only an intermediate stage of the reaction is dominated by mixing. The long-time behavior shows fluctuation-dominated kinetics, c ( t ) ∝ t − 1 / 2 , governed by effective diffusion. For the case of an eddy-lattice flow a very slow intermediate regime emerges, c ( t ) ∝ t − 1 / 4 , which is associated with the closed topology of flow lines.
Note: Reproducció digital del document publicat en format paper, proporcionada per APS i
It is part of: Physical Review Letters, 1997, vol. 78, núm. 4, p. 741-744
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ISSN: 0031-9007
Appears in Collections:Articles publicats en revistes (Química Inorgànica i Orgànica)
Articles publicats en revistes (Física Quàntica i Astrofísica)

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