On the effects of lateral openings on courtyard ventilation and pollution - A large-eddy simulation study

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dc.identifier.uri http://dx.doi.org/10.15488/4531
dc.identifier.uri https://www.repo.uni-hannover.de/handle/123456789/4573
dc.contributor.author Gronemeier, Tobias
dc.contributor.author Sühring, Matthias
dc.date.accessioned 2019-03-08T10:25:28Z
dc.date.available 2019-03-08T10:25:28Z
dc.date.issued 2019
dc.identifier.citation Gronemeier, T.; Sühring, M.: On the effects of lateral openings on courtyard ventilation and pollution - A large-eddy simulation study. In: Atmosphere 10 (2019), Nr. 2, 63. DOI: https://doi.org/10.3390/atmos10020063
dc.description.abstract Courtyards are an omnipresent feature within the urban environment. Residents often use courtyards as recreation areas, which makes them crucial for the physical and psychological comfort of the urban population. However, considering that courtyards represent enclosed cavities, they are often poorly ventilated spaces and pollutants from neighboring traffic, once entrained, can pose a serious threat to human health. Here, we studied the effects of lateral openings on courtyard pollution and ventilation. Therefore, we performed a set of large-eddy simulations for idealized urban environments with different courtyard configurations. While pollutant concentration and ventilation are barely modified by lateral openings for wide courtyards, lateral openings have a significant effect on the mean concentration, the number of high-concentration events and the ventilation within narrower and deeper courtyards. The impacts of lateral openings on air quality within courtyards strongly depend on their orientation with respect to the flow direction, as well as on the upstream flow conditions and upstream building configuration. We show that lateral openings, in most cases, have a negative impact on air quality; nevertheless, we also present configurations where lateral openings positively impact the air quality within courtyards. These outcomes may certainly contribute to improve future urban planning in terms of health protection. eng
dc.language.iso eng
dc.publisher Basel : MDPI AG
dc.relation.ispartofseries Atmosphere 10 (2019), Nr. 2
dc.rights CC BY 4.0 Unported
dc.rights.uri https://creativecommons.org/licenses/by/4.0/
dc.subject Courtyard eng
dc.subject Lagrangian particle model eng
dc.subject Large-eddy simulation eng
dc.subject Pollution eng
dc.subject Urban environment eng
dc.subject Ventilation eng
dc.subject Air quality eng
dc.subject Health risks eng
dc.subject Pollution eng
dc.subject Urban planning eng
dc.subject Ventilation eng
dc.subject Building configuration eng
dc.subject Courtyard eng
dc.subject Lagrangian particle model eng
dc.subject Mean concentrations eng
dc.subject Pollutant concentration eng
dc.subject Psychological comforts eng
dc.subject Urban environments eng
dc.subject Ventilated spaces eng
dc.subject Large eddy simulation eng
dc.subject.ddc 550 | Geowissenschaften ger
dc.title On the effects of lateral openings on courtyard ventilation and pollution - A large-eddy simulation study eng
dc.type article
dc.type Text
dc.relation.issn 2073-4433
dc.relation.doi https://doi.org/10.3390/atmos10020063
dc.bibliographicCitation.issue 2
dc.bibliographicCitation.volume 10
dc.bibliographicCitation.firstPage 63
dc.description.version publishedVersion
tib.accessRights frei zug�nglich


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