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Modélisation numérique des aérosols à l'échelle locale

Bastien Albriet
Abstract : At local scale and in urban areas, an important part of particulate pollution is due to traffic. It contributes largely to the high number concentrations observed. Two aerosol sources are mainly linked to traffic. Primary emission of soot particles and secondary nanoparticle formation by nucleation. The emissions and mechanisms leading to the formation of such bimodal distribution are still badly understood nowadays. In this thesis, we try to provide an answer to this problematic by numerical modelling. The Modal Aerosol Model MAM is used, coupled with two 3D-codes : a CFD (Mercure Saturne) and a CTM (Polair3D). A sensitivity analysis is performed, at the border of a road but also in the first meters of an exhaust plume, to identify the role of each process involved and the sensitivity of different parameters used in the modelling.
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Submitted on : Monday, June 25, 2007 - 8:00:00 AM
Last modification on : Monday, June 25, 2007 - 8:00:00 AM
Long-term archiving on: : Wednesday, September 8, 2010 - 5:27:37 PM

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Bastien Albriet. Modélisation numérique des aérosols à l'échelle locale. Sciences of the Universe [physics]. Ecole des Ponts ParisTech, 2007. English. ⟨pastel-00002574⟩

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