Computational study of temperature stratification effect on harmful gases expansion in the atmosphere

Abstract

To date, the study of atmospheric pollution is of great interest. Assessment, monitoring and calculation of concentrations of harmful impurities in the atmosphere with their source is based on theoretical studies, and it is possible to make short-term forecasts used to control emissions from industrial enterprises. Disposal of waste by industrial enterprises, often consisting not only of light impurities, but also of heavy elements, does not always control what constitutes a danger to living creatures and flora in the affected area.

Сomputational  model is constructed for determination of harmful impurities expansion in atmosphere, which is most serious environmental problems in many industrial cities in the world. Numerical calculations are obtained by programm complex ANSYS. There is given analysis and results of calculations determining the distribution of harmful impurities concentrations in different temperature gradient. Calculations are conducted for different pollutant-emission rate from point source. There is studied the influence of temperature in ground layer on the dynamics of harmful impurities concentration from point source. Obtained results allow to predict of distribution contour of impurities and its extent.