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Citation Information : Transport Problems. Volume 16, Issue 2, Pages 73-86, DOI: https://doi.org/10.21307/tp-2021-024
License : (CC BY 4.0)
Received Date : 04-November-2019 / Accepted: 10-May-2021 / Published Online: 24-June-2021
In this study, a numerical model is proposed for calculating pollution zones near the road, taking into account the geometry of the automobile transport, meteorological conditions, the location of the barriers and their height, and the chemical transformation of nitrogen oxides in the atmospheric air. The numerical solution is based on the integration of the mass transfer equations using the finite-difference method. To determine the components of the air flow velocity vector, a two-dimensional model of the potential flow is used, where the Laplace equation for the velocity potential is the modeling equation. Based on this numerical model, a software package has been developed that allows computational experiments and does not require large expenditures of computer time. Based on the results obtained, an assessment was made of the effectiveness of the use of barriers to reduce the level of air pollution near highways. It has been established that the use of barriers of different heights reduces the level of pollution behind the road by approximately 20-50%.
1. How are emissions of greenhouse gases by the EU evolving? Available at: https://ec.europa.eu/eurostat/cache/infographs/energy/bloc-4a.html.
2. National Statistics. Emissions of air pollutants in the UK, 1970 to 2019 – Nitrogen oxides (NOx). Available at: https://www.gov.uk/government/statistics/emissions-of-air-pollutants/annualemissions-of-nitrogen-oxides-in-the-uk-1970-2018.
3. Manisalidis, I. & Stavropoulou, E. & Stavropoulos, A. & Bezirtzoglou, E. Environmental and health impacts of air pollution: a review. Frontiers in Public Health. 2020. Vol. 8. No. 14. P. 1-13.
4. Baldauf, R. & Thoma, E. & Khlystov, A. & et al. Impacts of noise barriers on near-road air quality. Atmospheric Environment. 2008. Vol. 42. P. 7502-7507.
5. Bruno, L. & Fransos, D. & Lo Giudice, A. Solid barriers for windblown sand mitigation: Aerodynamic behavior and conceptual design guidelines. Journal of Wind Engineering & Industrial Aerodynamics. 2018. No. 173. Р. 79-90.
6. Li, B. & Sherman, D.J. Aerodynamics and morphodynamics of sand fences: A review. Aeolian Research. 2015. No. 17. Р. 33-48.
7. Wonsik, C. & Shishan, Hu & Meilu, He & Kozawa, K. Spatial heterogeneity of roadway pollutant in Los Angeles. Available at: http://www.aqmd.gov/docs/defaultsource/technology research /TechnologyForums/near-road-itigationmeasures/near_road_mitigation-agenda-presentations.pdf.
8. Hagler Gayle, S.W. & et al. Model evaluation of roadside barrier impact on near-road air pollution. Atmospheric Environment. 2011. Vol. 45. No. 15. P. 2522-2530. DOI: https://doi.org/10.1016/j.atmosenv.2011.02.030.
9. Mao, Y. & Wilson, J.D. & Kort, J. Effects of a shelterbelt on road dust dispersion. Atmospheric Environment. 2013. Vol. 79. P. 590-598. DOI: https://doi.org/10.1016/j.atmosenv.2013.07.015.
10.Jason, Y. & et al. Modeling multi-scale aerosol dynamics and micro-environmental air quality near a large highway intersection using the CTAG model. Science of the Total Environment. 2013. Vol. 443. P. 375-386. Available at: https://doi.org/10.1016/j.scitotenv.2012.10.102.
11. Venkatram, A. & Snyder, M. & Isakov, V. Modeling the impact of roadway emissions in light wind, stable and transition conditions. Transportation Research Part D: Transport and Environment. 2013. Vol. 24. P. 110-119.
12. Venkatram, A. & Snyder, M. & Isakov, V. & Kimbrough, S. Impact of wind direction on near-road pollutant concentrations. Atmospheric Environment. 2013. Vol. 80. P. 248-258.
13. Heist, D. & et al. Estimating near-road pollutant dispersion: A model inter-comparison. Transportation Research Part D: Transport and Environment. 2013. Vol. 25. P. 93-105.
14. Overman, H.T. Simulation model for NOx distribution in a street canyon with air purifying pavement. Master thesis. University Twente, Netherlands. 2009. P. 1-99.
15. Merah, A. & Noureddine, A. modeling and analysis of NOx and O3 in a street canyon. Der Pharma Chemica. 2017. No. 9(19). P. 66-72.
16.Zhong, J. & Cai, X. & Bloss, W. Modelling the dispersion and transport of reactive pollutants in a deep urban street canyon. Environmental Pollution. 2015. Vol. 200. P. 42-52.
17.Biliaiev, M. & et al. Application of local exhaust systems to reduce pollution concentration near the road. Transport Problems. 2020. Vol. 15. No. 4. Part 1. P. 137-148. DOI: 10.21307/tp-2020-055.
18. Sang, J.J. A CFD study of roadside barrier impact on the dispersion of road air pollution. Asian Journal of Atmospheric Environment. 2015. Vol. 9-1. P. 22-30. DOI: http://dx.doi.org/10.5572/ajae.2015.9.1.022.
19. Officially reported emission data. EMEP Centre on Emission Inventories and Projections. Available at: https://www.ceip.at/webdab-emission-database/reported-emissiondata.