Simulation of traffic pollution dispersion near roadways

Abstract

A semi-empirical model intended for simulation of dispersion of aerosol particles with the diameter larger than 0.05 μm near roadways is proposed. The pollution source is simulated as a cut-off cylinder, formed due to traffic pollution on the roadways at the initial time moment and uniformly filled with aerosol particles. The aerosol particle transfer by the wind further from the roadway is simulated, its settling being influenced by the gravitation, particle buoyancy, and thermal pollutant plume rise effects. Good agreement between the model and experimental results is obtained. © Lithuanian Physical Society, 2010.