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In the present paper it is developed mathematical model for description of heat and mass transfer processes and predicting velocity, temperature and pollution concentrations near roadway. To describe convective transfer controlled by the wind and gravity, we use Reynolds equations for turbulent flow. The boundary value problem was solved numerically. A discrete analog for equations was obtained by means of the control volume method. Methods of predicting concentrations of automobile exhaust gases near roadways are needed for the planning and design of roads and nearby structures.

Mathematical Model of Environmental Pollution by Motorcar in an Urban Area