Assessment of the height and the slope of the upper part of the protective barrier on the dispersion of pollutants from automobile exhausts by taking into account non-stationary external factors
Issakhov A. Abylkassymova A.
April 2025Springer Science and Business Media Deutschland GmbH
Modeling Earth Systems and Environment
2025#11Issue 2
Studying air quality in urban conditions is an important problem today, as it directly affects human health. In this paper, we study a busy residential area of Almaty, which consists of several educational buildings located on both sides of the road from the roadway. The impact of a barrier with different heights having a slope at the top of the barrier to improve air quality was assessed using numerical modeling. In numerical modeling, special attention was paid to different weather conditions. To identify effective barriers to improve air quality, several options were considered: no barrier, the presence of barriers 2 and 4 m high with an additional slope of 30° at the top of the barrier, the presence of barriers 2 and 4 m high with an additional slope of 45° at the top of the barrier. To take into account different weather conditions that depend on time, the period from 9 am to 9 pm (43,200 s) was used. According to the results obtained, the most effective barrier height was chosen to be 4 m with a slope of 30°. The choice of the barrier height with the optimal slope was made for the process of changing the concentration distribution with a real change in wind direction, wind force, ambient temperature, road surface temperature and relative air humidity, which changes over time. The obtained results showed that taking into account the relative humidity and ambient temperature, which change over time, significantly affects the distribution of concentrations in a residential area.
Automobiles emission dispersion , Buoyancy force , Different wind direction , Pollution , Relative humidity
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Kazakh British Technical University, Almaty, Kazakhstan
al-Farabi Kazakh National University, Almaty, Kazakhstan
International Information Technology University, Almaty, Kazakhstan
Kazakh British Technical University
al-Farabi Kazakh National University
International Information Technology University
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