München 2004 – wissenschaftliches Programm

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UP: Umweltphysik

UP 16: Poster: Atmosph
äre

UP 16.1: Poster

Dienstag, 23. März 2004, 14:00–16:00, Schellingstr. 3

Advection, diffusion and reaction of pollutants in a two dimensional flow — •G. Bene¹ and H. Lustfeld² — ¹Institute for Theoretical Physics, Eötvös University, Pázmány Péter sétány 1/A, H-1117 Budapest, Hungary, e-mail: bene@arpad.elte.hu — ²Forschungszentrum Jülich, IFF, 52425 Jülich, e-mail: h.lustfeld@fz-juelich.de

Advection, diffusion and reaction of pollutants in a two dimensional flow is studied. Two separate but related methods are considered:
1) Effective diffusion and reaction rates based on a special (exact) solution are calculated and extended to the general case. We present results for the concentration distribution, the effective diffusion and effective reaction rates.
2) In experimental situations the detailed structure of the concentration field is mostly not available, only a locally averaged concentration field c is given. We derive an equation for c directly. This approach is generalized for calculating effective reaction rates between two pollutants.