RESEARCH OF THE INFLUENCE OF PROTECTIVE BARRIERS ON REDUCING THE RISK OF ILLNESSES IN WORKERS

Problem statement. Emissions from motor vehicles create significant areas of chemical air pollution near highways. Shopping malls are often located near highways. This arrangement of people during the working day near the highway creates a risk of workers becoming ill. Therefore, it is important to reduce the intensity of air pollution. The simplest and most effective way to protect against atmospheric air pollution near highways is to use barriers. To substantiate the parameters of the protective barrier, you need to have specialized mathematical models. The purpose of the article. Development of numerical models to calculate the level of contamination of work areas near highways in order to determine the effectiveness of using protective barriers to reduce the risk of diseases in workers. Methodology. For mathematical modeling of impurity propagation in the presence of protective barriers, two-dimensional equations of aerodynamics and mass transfer are used. The developed numerical model allows taking into account the air flow velocity profile, atmospheric diffusion, impurity emission intensity, and the rate of gravitational deposition of the impurity in the air. Finite-difference splitting schemes are used for numerical integration of the modeling equations of aerodynamics and mass transfer. Scientific novelty. An effective numerical model is proposed that allows determining the field of concentration of a hazardous substance near a highway. The model allows analyzing air pollution zones taking into account the influence of a protective barrier located near the highway. Based on the data on the distribution of the concentration of a hazardous substance, the risk of developing diseases in a person located in the zone of influence of vehicle emissions is determined. Practical significance. The constructed model can be used to quickly predict the level of danger for workers whose work area is located near the road. Conclusions. A software implementation of the developed numerical model was carried out, and a computational experiment was conducted, which illustrated the effectiveness of using the developed numerical model for solving applied problems.