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http://hdl.handle.net/2445/12788
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 Thermodinàmica Dinàmica de fluids Chemistry, Physical and theoretical Statistical physics Fluid dynamics Thermodynamics |
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 http://dx.doi.org/10.1103/PhysRevLett.78.741 |
It is part of: | Physical Review Letters, 1997, vol. 78, núm. 4, p. 741-744 |
URI: | http://hdl.handle.net/2445/12788 |
Related resource: | http://dx.doi.org/10.1103/PhysRevLett.78.741 |
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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