ENHANCEMENT OF THE REACTIVITY BY CHAOTIC MIXING

Authors
PAIREAU O TABELING P
Citation
O. Paireau et P. Tabeling, ENHANCEMENT OF THE REACTIVITY BY CHAOTIC MIXING, Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics, 56(2), 1997, pp. 2287-2290
Citations number
19
Categorie Soggetti
Physycs, Mathematical","Phsycs, Fluid & Plasmas
Journal title
Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics → ACNP
ISSN journal
1063651X
Volume
56
Issue
2
Year of publication
1997
Pages
2287 - 2290
Database
ISI
SICI code
1063-651X(1997)56:2<2287:EOTRBC>2.0.ZU;2-5
Abstract
We report an experimental study of chaotic mixing of chemically reacti ng species, for first-and second-order reactions, in a system composed of a pair of like-sign vortices, oscillating periodically in time. Fo r the second-order reaction, we find that the overall reactivity is en hanced compared to homogeneous mixing. This provides experimental evid ence that chaotic mixing may increase the overall reaction rate for se cond-order reactions. We offer a method to estimate the global reactiv ity, which underlines the role of the concentration filaments formed, in the system, by the chaotic process.