Open AccessSemi-Empirical Model of the Simulation of Traffic Pollution Dispersion near Roadways
Author(s) -
Bronislovas Martinėnas,
Valdas Špakauskas,
Dainius Jasaitis
Publication year - 2011
Publication title -
the baltic journal of road and bridge engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.259
H-Index - 21
eISSN - 1822-4288
pISSN - 1822-427X
DOI - 10.3846/bjrbe.2011.03
Subject(s) - crosswind , dispersion (optics) , range (aeronautics) , environmental science , meteorology , diffusion , buoyancy , aerosol , wind speed , cylinder , atmospheric dispersion modeling , atmosphere (unit) , visibility , pollution , wind direction , mechanics , air pollution , engineering , physics , aerospace engineering , ecology , chemistry , organic chemistry , biology , optics , thermodynamics , mechanical engineering
A semi-empirical statistical model based on physical processes intended for simulation of traffic pollution dispersion near roadways is applied. The pollution sources are a road and associated transport, which in the model are simulated as an undeviating cut-off cylinder, formed along the road surface and filled with aerosol particles. The dispersion of the cloud of these aerosol particles into the environment by crosswind directed perpendicular to the road is investigated, including the gravitation, particle buoyancy, and diffusion of atmosphere effects. The main focus is on the concentration change of the particles in size range of 0.05–0.22 μm when receded further from the road in the direction of the wind. Parameters of the model are adjusted to data of the experiment above the ground surface in horizontal locality. Good agreement between the model and experimental results is obtained.
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