Academic Journal
Parametrization of Horizontal and Vertical Transfers for the Street-Network Model MUNICH Using the CFD Model Code_Saturne
| العنوان: | Parametrization of Horizontal and Vertical Transfers for the Street-Network Model MUNICH Using the CFD Model Code_Saturne |
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| المؤلفون: | Maison, Alice, Flageul, Cédric, Carissimo, Bertrand, Tuzet, Andrée, Sartelet, Karine |
| المساهمون: | Centre d'Enseignement et de Recherche en Environnement Atmosphérique (CEREA), École des Ponts ParisTech (ENPC)-EDF R&D (EDF R&D), EDF (EDF)-EDF (EDF), Ecologie fonctionnelle et écotoxicologie des agroécosystèmes (ECOSYS), AgroParisTech-Université Paris-Saclay-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), CURIOSITY Institut Pprime, Département Fluides, Thermique et Combustion Institut Pprime (Département FTC), Institut Pprime UPR 3346 (PPrime Poitiers ), Université de Poitiers = University of Poitiers (UP)-École Nationale Supérieure de Mécanique et d’Aérotechnique Poitiers (ISAE-ENSMA)-Centre National de la Recherche Scientifique (CNRS)-Université de Poitiers = University of Poitiers (UP)-École Nationale Supérieure de Mécanique et d’Aérotechnique Poitiers (ISAE-ENSMA)-Centre National de la Recherche Scientifique (CNRS)-Institut Pprime UPR 3346 (PPrime Poitiers ), Université de Poitiers = University of Poitiers (UP)-École Nationale Supérieure de Mécanique et d’Aérotechnique Poitiers (ISAE-ENSMA)-Centre National de la Recherche Scientifique (CNRS)-Université de Poitiers = University of Poitiers (UP)-École Nationale Supérieure de Mécanique et d’Aérotechnique Poitiers (ISAE-ENSMA)-Centre National de la Recherche Scientifique (CNRS), ANR-19-CE22-0012,sTREEt,Impact du stress des arbres urbains sur la qualité de l'air(2019) |
| المصدر: | ISSN: 2073-4433. |
| بيانات النشر: | CCSD MDPI |
| سنة النشر: | 2022 |
| المجموعة: | Université de Poitiers: Publications de nos chercheurs.ses (HAL) |
| مصطلحات موضوعية: | meteorological modeling, street-network, urban areas, [PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph], [SDU.STU.ME]Sciences of the Universe [physics]/Earth Sciences/Meteorology, [SDE]Environmental Sciences |
| الوصف: | International audience ; Cities are heterogeneous environments, and pollutant concentrations are often higher in streets compared with in the upper roughness sublayer (urban background) and cannot be represented using chemical-transport models that have a spatial resolution on the order of kilometers. Computational Fluid Dynamics (CFD) models coupled to chemistry/aerosol models may be used to compute the pollutant concentrations at high resolution over limited areas of cities; however, they are too expensive to use over a whole city. Hence, simplified street-network models, such as the Model of Urban Network of Intersecting Canyons and Highways (MUNICH), have been developed. These include the main physico-chemical processes that influence pollutant concentrations: emissions, transport, deposition, chemistry and aerosol dynamics. However, the streets are not discretized precisely, and concentrations are assumed to be homogeneous in each street segment. The complex street micro-meteorology is simplified by considering only the vertical transfer between the street and the upper roughness sublayer as well as the horizontal transfer between the streets. This study presents a new parametrization of a horizontal wind profile and vertical/horizontal transfer coefficients. This was developed based on a flow parametrization in a sparse vegetated canopy and adapted to street canyons using local-scale simulations performed with the CFD model Code_Saturne. CFD simulations were performed in a 2D infinite street canyon, and three streets of various aspect ratios ranging from 0.3 to 1.0 were studied with different incoming wind directions. The quantities of interest (wind speed in the street direction and passive tracer concentration) were spatially averaged in the street to compare with MUNICH. The developed parametrization depends on the street characteristics and wind direction. This effectively represents the average wind profile in a street canyon and the vertical transfer between the street and the urban roughness ... |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| ردمك: | 978-0-00-786143-9 0-00-786143-5 |
| Relation: | WOS: 000786143500001 |
| DOI: | 10.3390/atmos13040527 |
| الاتاحة: | https://u-paris.hal.science/hal-03695746 https://u-paris.hal.science/hal-03695746v1/document https://u-paris.hal.science/hal-03695746v1/file/22-atmosphere-13-00527-v2.pdf https://doi.org/10.3390/atmos13040527 |
| Rights: | http://creativecommons.org/licenses/by/ ; info:eu-repo/semantics/OpenAccess |
| رقم الانضمام: | edsbas.4C55547B |
| قاعدة البيانات: | BASE |
| ردمك: | 9780007861439 0007861435 |
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| DOI: | 10.3390/atmos13040527 |