Articles | Volume 22, issue 14
https://doi.org/10.5194/acp-22-9369-2022
https://doi.org/10.5194/acp-22-9369-2022
Research article
 | 
20 Jul 2022
Research article |  | 20 Jul 2022

Parameterizing the aerodynamic effect of trees in street canyons for the street network model MUNICH using the CFD model Code_Saturne

Alice Maison, Cédric Flageul, Bertrand Carissimo, Yunyi Wang, Andrée Tuzet, and Karine Sartelet

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Latest update: 28 Mar 2024
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Short summary
This paper presents a parameterization of the tree crown effect on air flow and pollutant dispersion in a street network model used to simulate air quality at the street level. The new parameterization is built using a finer-scale model (computational fluid dynamics). The tree effect increases with the leaf area index and the crown volume fraction of the trees; the street horizontal velocity is reduced by up to 68 % and the vertical transfer into or out of the street by up to 23 %.
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