APPLICATION OF SCREENING ALONG HIGHWAYS TO REDUCE THE GAS LOAD IN THE SURROUNDING AREA

Abstract

This work is devoted to the development of a method for numerical calculation the concentration field of a harmful substance CO along the road and in the territory adjacent to it. The method takes into account not only the physical and meteorological parameters, but also the location and height of the screens. The implementation of the method is based on the mass transfer equation for the impurity concentration and the potential flow equation for the velocity vector components. The solution of equations is based on finite difference methods. Based on this method, a software package has been developed that allows you to conduct computational experiments and does not require large amounts of computer time. Based on the results obtained, an assessment was made of the effectiveness of the use of screens to reduce the level of air pollution near highways. It has been established that an increase in the height of the screens from 2.8 m to 5 m reduces the level of pollution behind the road by up to 50%.