Universality in active chaos

Details Universality in active chaos Universality in active chaos

2004-06-07

arxiv.org/abs/nlin/0406011v1

Chaos, vol. 14, p. 72 (2004)

Nonlinear Sciences

Chaotic Dynamics

10 pages

Scientific paper

10.1063/1.1626391

Many examples of chemical and biological processes take place in large-scale environmental flows. Such flows generate filamental patterns which are often fractal due to the presence of chaos in the underlying advection dynamics. In such processes, hydrodynamical stirring strongly couples into the reactivity of the advected species and might thus make the traditional treatment of the problem through partial differential equations difficult. Here we present a simple approach for the activity in in-homogeneously stirred flows. We show that the fractal patterns serving as skeletons and catalysts lead to a rate equation with a universal form that is independent of the flow, of the particle properties, and of the details of the active process. One aspect of the universality of our appraoch is that it also applies to reactions among particles of finite size (so-called inertial particles).

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