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1997

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Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/12788

Fluctuation-dominated kinetics under stirring

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http://dx.doi.org/10.1103/PhysRevLett.78.741

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.

Subject

Química física, Física estadística, Thermodinàmica, Dinàmica de fluids

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Chemistry, Physical and theoretical, Statistical physics, Fluid dynamics, Thermodynamics

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Articles publicats en revistes (Física Quàntica i Astrofísica)
Articles publicats en revistes (Química Inorgànica i Orgànica)

Citation

REIGADA SANZ, Ramon, et al. Fluctuation-dominated kinetics under stirring. Physical Review Letters. 1997. Vol. 78, num. 4, pags. 741-744. ISSN 0031-9007. [consulted: 6 of June of 2026]. Available at: https://hdl.handle.net/2445/12788

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