Quick Computing Numerical Model of Pollutant Dispersion in Urban Street Canyon
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Date
2022
Journal Title
Journal ISSN
Volume Title
Publisher
Kaunas University of Technology, Kaunas
Abstract
ENG: This research proposes a numerical model for the quick calculation of air pollution by emissions from cars in urban area such as "canyon". The Euler equations written in Helmholds variables were used to calculate the wind flow velocity field in street canyon. A special technique is used to calculate the vorticity in the corner points of buildings and barriers near the road. To calculate pollutant concentration field in the street canyon, which is formed from the traffic flow, the mass transfer equation was used, which took into account pollutant emission rate from cars, atmospheric diffusion, gravitational deposition, convective transfer. For numerical integration of modeling equations change-triangular finite-difference schemes were used The computer code realizing the developed numerical model was developed. The results of computational experiments to estimate the level of air pollution for different variants of the "canyon" scheme are presented.
Description
M. Biliaiev: ORCID 0000-0002-1531-7882, V. Biliaieva: ORCID 0000-0003-2399-3124, V. Kozachyna: ORCID 0000-0002-6894-5532; O. Berlov: ORCID 0000-0002-7442-0548; T. Rusakova: ORCID 0000-0001-5526-3578; P. Kirichenko: ORCID 0000-0002-0793-9593
Keywords
air pollution, auto transport, canyon, difference methods, pollution concentration level, velocity field, КГВ
Citation
Biliaiev M., Rusakova T., Biliaieva V., Berlov O., Kozachyna V., Kirichenko P. Quick Computing Numerical Model of Pollutant Dispersion in Urban Street canyon. Transport Means 2022 : Proc. of the 26th Intern. Sci. Conf. (05–07 Oct., 2022, Kaunas, Lithuania). Kaunas, 2022. Pt. I. P. 10–16.