MIXING IN REACTION-DIFFUSION PROBLEMS

Abstract

Mixing of two viscous liquids often produces arrays of alternating striations. The geometrical structure of these arrays controls the course of the reactions between the liquids, both when the reaction occurs after mixing and also when mixing and reaction take place simultaneously. In the present review we consider some aspects of the problem for the A+B→0 irreversible reaction under stoichiometric conditions. We focus on the influence of the initial distribution of striation thicknesses, on the time evolution of this distribution, on the structure of the reaction layers and on the role of mixing.