Numerical modeling of the transport and diffusion of pollutant particles taking into account airflow characteristics and temperature

The article considers the results of experimental and numerical studies of atmospheric pollution processes in industrial zones. The proposed mathematical model helps to solve problems related to monitoring and forecasting the state of the environment in industrial zones, as well as making decisions on protection against the negative impact of anthropogenic factors. studies the physicochemical properties of substances involved in the process of dispersion in the atmosphere. In the process of diffusion, the particle diameter, temperature and wind speed are taken into account. To check the adequacy of the developed mathematical model, computational experiments were carried out on a computer. Analysis of the computational experiments showed that with an increase in wind speed, the concentration of pollutants around the source is not observed, and the area of their distribution expands over time. When the speed of air masses in the atmosphere exceeds the critical value, diffusion of the substance occurs only due to the effect of transition to the atmosphere. Changes in the concentration of pollutants in the layers of the atmosphere over time depending on the actual wind speed are also noted.