کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4403936 | 1618638 | 2011 | 8 صفحه PDF | دانلود رایگان |

Atmospheric pollution in cities increasingly pay attention. The most important air pollutants in cities are exhaust gases. The pollution concentration may exceed air quality standards and therefore it is important to find tools of control them, particularly by using a mathematical modelling. Atmospheric dispersion system dynamics and kinetics models are multivariate and nonlinear, and cannot be solved by analytical methods. That brings up a question about finding approximate solutions for that type of models. In this study the simplified mathematical model for determination of the urban air pollution concentration dynamics is considered, taking into account the important condition that the velocity of the turbulent atmosphere air flow is not given a priori. A new analytical method of solution of nonlinear Kolmogorov-Petrovsky-Piskunov equation for velocity of the turbulent air flow is proposed, which allows solve 3D problem of exhaust concentration dynamics in urban atmosphere.
Journal: Procedia Environmental Sciences - Volume 4, 2011, Pages 35-42