München 2004 – scientific programme
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UP: Umweltphysik
UP 16: Poster: Atmosph
äre
UP 16.1: Poster
Tuesday, March 23, 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.