1. Modeling of Aerosol Dispersion from a Busy Road in the Presence of Nanoparticle Fragmentation.
- Author
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Gramotnev, Dmitri K. and Gramotnev, Galina
- Subjects
- *
AEROSOLS , *AIR pollution , *NANOPARTICLES , *FRAGMENTED landscapes , *ATOMIZERS , *METEOROLOGY - Abstract
A simple semianalytical model of dispersion of nanoparticle aerosols from a busy road in the presence of intensive particle fragmentation is developed. In particular, it is predicted that the total number concentration may be characterized by a significant maximum at an optimal distance from the road. Simple analytical existence conditions of such a maximum are derived. Applicability conditions for the model and the effect of turbulent diffusion and dry deposition of nanoparticles on the theoretical predictions are also discussed. As a result of the comparison of the theoretical predictions with the experimental results on the total number concentration as a function of distance from the road, the typical fragmentation rate coefficient has been determined as ≈0.086 s-1, with an estimated error of ∼30%. [ABSTRACT FROM AUTHOR]
- Published
- 2005
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