One-dimensional simulation of the pollutants dispersion in the atmosphere taking into account the turbulence nonlocal closure
Keywords:Diffusion equation, GILTT technique, Nonlocal closure, Pollutants dispersion
The aim of this work is to evaluate the pollutants dispersion in the atmosphere, considering the diffusion equation, turbulencenonlocal closure term and the vertical component of the mean wind. To solve the diffusion equation will be utilized the generalizedintegral transform technique with analytical solution of the transformed problem by Laplace transform. The results are in agreementwith the literature and the concentration presents one peak at the initial time and then decreases and becomes homogeneous. Theinclusion of the w term causes an ascending or descending behavior of the pollutants plume, depending if the term is positiveor negative. The present model presents the behavior expected of the pollutant plume and can be used for air quality regulatoryapplications.
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