Research of the trajectory of pollution diffusion from a point source depending on the nature of the landscape
Journal Title: Комп’ютерне моделювання: аналіз, управління, оптимізація - Year 2017, Vol 2, Issue 2
Abstract
The behavior of the flow of pollutants during process of diffusion from a chimney is investigated in this paper. It will help to understand the process of air pollution better. By means of the Solid Edge program three three-dimensional models for a point source of pollution with different types of landscape are created: a flat landscape, a hilly landscape and an urban landscape, which consists of buildings of different sizes. Three-dimensional models have identical geometrical sizes, a chimney, and different types of landscape help to research behavior of a flow in different conditions. On the basis of threedimensional models, model problems are implemented using ANSYS software. Computation in the software product ANSYS are performed using the finite element method. Polygon meshes for three-dimensional models are created for implementation of the finite element method. The changes in trajectory of the pollutants flow depending on the nature of the landscape were shown. In the model with a flat landscape, the path of the pollutant flow is directed downward. In the model with a hilly landscape, after collision with an obstacle, the trajectory of the pollutant flow is directed upward. It is revealed that urban development exerts less influence, than an unsmooth landscape. First of all, it depends on the height of the obstacle relative to the height of the source of pollution. The change in the flow trajectory influences the level of concentration of pollutants. The first and third models have a similar level of concentration of pollutants. In the second model the level of concentration of pollutants is lower. It was stated that the concentration level of pollutants considerably decreased after the collision with a hilly landscape that exceeds chimney height.
Authors and Affiliations
А. А. Манукян, Т. В. Силивёрстова
Keywords
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