Abstract
We investigate the evolution of active particle ensembles in open chaotic flows. The active professes of the type A + B --> 2B and A + B --> 2C are considered in the limit of weak diffusion. As an illustrative advection dynamics, we choose a model of the von Karman vortex street, and show that the backbone of the active processes is the fractal structure associated with the passive dynamics' chaotic saddle. This fractal dynamics leads to singularly enhanced concentrations, resulting in a distribution of products that differs entirely from the one in conventional active processes. This may account for the observed filamental intensification of activity in environmental flows.
| Original language | English |
|---|---|
| Pages (from-to) | 500-503 |
| Number of pages | 4 |
| Journal | Physical Review Letters |
| Volume | 80 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 19 Jan 1998 |
Keywords
- leapfrogging vortex pairs
- open hydrodynamical flows
- scattering
- transport
Cite this
Advection of active particles in open chaotic flows. / Toroczkai, Zoltan; Karolyi, Gyorgy; Pentek, Aron; Tel, Tamas; Grebogi, Celso .
In: Physical Review Letters, Vol. 80, No. 3, 19.01.1998, p. 500-503.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Advection of active particles in open chaotic flows
AU - Toroczkai, Zoltan
AU - Karolyi, Gyorgy
AU - Pentek, Aron
AU - Tel, Tamas
AU - Grebogi, Celso
PY - 1998/1/19
Y1 - 1998/1/19
N2 - We investigate the evolution of active particle ensembles in open chaotic flows. The active professes of the type A + B --> 2B and A + B --> 2C are considered in the limit of weak diffusion. As an illustrative advection dynamics, we choose a model of the von Karman vortex street, and show that the backbone of the active processes is the fractal structure associated with the passive dynamics' chaotic saddle. This fractal dynamics leads to singularly enhanced concentrations, resulting in a distribution of products that differs entirely from the one in conventional active processes. This may account for the observed filamental intensification of activity in environmental flows.
AB - We investigate the evolution of active particle ensembles in open chaotic flows. The active professes of the type A + B --> 2B and A + B --> 2C are considered in the limit of weak diffusion. As an illustrative advection dynamics, we choose a model of the von Karman vortex street, and show that the backbone of the active processes is the fractal structure associated with the passive dynamics' chaotic saddle. This fractal dynamics leads to singularly enhanced concentrations, resulting in a distribution of products that differs entirely from the one in conventional active processes. This may account for the observed filamental intensification of activity in environmental flows.
KW - leapfrogging vortex pairs
KW - open hydrodynamical flows
KW - scattering
KW - transport
U2 - 10.1103/PhysRevLett.80.500
DO - 10.1103/PhysRevLett.80.500
M3 - Article
VL - 80
SP - 500
EP - 503
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 3
ER -