Chemical dynamics versus transport dynamics in a simple model

Details Chemical dynamics versus transport dynamics in a simple model Chemical dynamics versus transport dynamics in a simple model

1997-12-04

arxiv.org/abs/physics/9712007v1

Physics

Fluid Dynamics

27 pages, 9 figures, submitted to Physica D

Scientific paper

Reaction equations of homogeneously mixed pollutants in the atmosphere can lead to non-stationary periodic solutions. It is important to know in which respect these solutions are modified under the influence of the atmospheric currents. We investigate this question in a very simple model: The reaction equations are modeled by the equations of the brusselator and the currents are represented by an isolated vortex. In the limit of high vortex currents we find again the homogeneous solutions whereas for smaller currents complicated spatial and temporal patterns emerge. The role of the diffusion as a singular perturbation is investigated.

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