Omarova P., Yang T., Ataniyazova A., Kozbakova A., Yedilkhan D.
Assessment of Air Quality in the Urban Environment Taking into Account Vegetation and Building Geometry // Journal of Ecological Engineering. — 2026. — Vol. 27, No. 2. — P. 388–400. — DOI: 10.12911/22998993/211688.

Abstract: In this paper, the influence of a perpendicular structure in front of parallel buildings on the stabilization of pollutants is investigated, taking into account the porous medium. To test the model, numerical simulation was carried out using the Navier–Stokes governing equations. Special attention is paid to configurations with a perpendicularly located box containing a porous barrier simulating trees, which allows more realistic reproduction of urban environmental conditions. The study is based on a test problem reproducing experimental conditions and applying the RNG k–ε turbulence model. Simulation results showed that perpendicular structures significantly affect airflow movement and pollutant concentration distribution. Model adjustments for turbulent viscosity in critical areas were introduced to improve the forecast precision of impurity transport. Analysis of the vertical concentration profile revealed critical zones where harmful substances accumulate, especially at the level of y/H = 1.26. The results were validated with experimental data and confirmed the reliability of the numerical approach. The obtained findings are relevant for environmental analysis of urban areas and can be applied in planning measures aimed at improving air quality. Future work will focus on extending the modeling to more complex urban environments considering terrain, multiple pollution sources, and weather conditions.

Link / DOI: https://doi.org/10.12911/22998993/211688