Reigada Sanz, RamonSagués i Mestre, FrancescSokolov, Igor M., 1958-Sancho, José M.Blumen, Alexander2010-06-072010-06-0719970031-9007https://hdl.handle.net/2445/12788We 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.4 p.application/pdfeng(c) American Physical Society, 1997Química físicaFísica estadísticaThermodinàmicaDinàmica de fluidsChemistry, Physical and theoreticalStatistical physicsFluid dynamicsThermodynamicsinfo:eu-repo/semantics/article114552info:eu-repo/semantics/openAccess