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Título:	Fluctuation-dominated kinetics under stirring
Autor/a:	Reigada Sanz, Ramon; Sagués i Mestre, Francesc; Sokolov, Igor M., 1958-; Sancho, José M.; Blumen, Alexander
Otros autores:	Universitat de Barcelona
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.
Materia(s):	-Química física -Física estadística -Thermodinàmica -Dinàmica de fluids -Chemistry, Physical and theoretical -Statistical physics -Fluid dynamics -Thermodynamics
Derechos:	(c) American Physical Society, 1997
Tipo de documento:	Artículo Artículo - Versión publicada
Editor:	American Physical Society
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