Study of the air pollutants dispersion from several point sources using an improved Gaussian model

This work presents a study of the atmospheric dispersion of emissions,particularly those of nox (no + no2),generated by one or more stacks (five in our case). a numerical simulation of the dispersion of pollutants emitted by sources was performed on an area up to 3 km2 using an improved gaussian model. a validation of this model was performed using a close comparison with measurements (previous works) .finally,a study of various scenarios aimed to reducing the impact of these pollutants on the area was carried out by studying the influence of different parameters (the number of emission points,stack height,atmospheric stability,speed and wind direction,...) on the dispersion of pollutants. the obtained results are of great interest for the improvement of evacuation devices to significantly reduce emissions and improve the air quality in the surrounding industrial sites.