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Article: Pedestrian wind comfort near a super-tall building with various configurations in an urban-like setting

TitlePedestrian wind comfort near a super-tall building with various configurations in an urban-like setting
Authors
Keywordspedestrian wind comfort
super-tall building
building configuration
urban wind environment
computational fluid dynamics simulation
Issue Date2020
PublisherSpringer Verlag, published in association with Tsinghua University Press. The Journal's web site is located at http://link.springer.com/journal/12273
Citation
Building Simulation, 2020, v. 13, p. 1385-1408 How to Cite?
AbstractPedestrian wind comfort near a 400 m super-tall building in high and low ambient wind speeds, referred to as Windy and Calm climates, is evaluated by conducting computational fluid dynamics (CFD) simulations. The super-tall building has 15 different configurations and is located at the center of 50 m medium-rise buildings in an urban-like setting. Pedestrian level mean wind speeds near the super-tall building is obtained from three-dimensional (3D), steady-state, Reynolds-Averaged Navier-Stokes (RANS)-based simulations for five incident wind directions (θ = 0°, 22.5°, 45°, 90°, 180°) that are subsequently compared with two wind comfort criteria specified for Calm and Windy climates. Results show a 1.53 times increase in maximum mean wind speed in the urban area after the construction of a square-shaped super-tall building. The escalated mean wind speeds result in a 23%–15% and 36%–29% decrease in the area with “acceptable wind comfort” in Calm and Windy climates, respectively. The area with pedestrian wind comfort varies significantly with building configuration and incident wind direction, for example, the configurations with sharp corners, large plan aspect ratios and, frontal areas and the orientation consistently show a strong dependency on incident wind direction except for the one with rounded plan shapes. Minor aerodynamic modifications such as corner modifications and aerodynamically-shaped configurations such as tapered and setback buildings show promise in improving pedestrian wind comfort in Windy climate.
DescriptionBronze open access
Persistent Identifierhttp://hdl.handle.net/10722/289762
ISSN
2023 Impact Factor: 6.1
2023 SCImago Journal Rankings: 1.326
PubMed Central ID
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorZhang, X-
dc.contributor.authorWeerasuriya, AU-
dc.contributor.authorZhang, X-
dc.contributor.authorTse, KT-
dc.contributor.authorLu, B-
dc.contributor.authorLi, CY-
dc.contributor.authorLiu, CH-
dc.date.accessioned2020-10-22T08:17:07Z-
dc.date.available2020-10-22T08:17:07Z-
dc.date.issued2020-
dc.identifier.citationBuilding Simulation, 2020, v. 13, p. 1385-1408-
dc.identifier.issn1996-3599-
dc.identifier.urihttp://hdl.handle.net/10722/289762-
dc.descriptionBronze open access-
dc.description.abstractPedestrian wind comfort near a 400 m super-tall building in high and low ambient wind speeds, referred to as Windy and Calm climates, is evaluated by conducting computational fluid dynamics (CFD) simulations. The super-tall building has 15 different configurations and is located at the center of 50 m medium-rise buildings in an urban-like setting. Pedestrian level mean wind speeds near the super-tall building is obtained from three-dimensional (3D), steady-state, Reynolds-Averaged Navier-Stokes (RANS)-based simulations for five incident wind directions (θ = 0°, 22.5°, 45°, 90°, 180°) that are subsequently compared with two wind comfort criteria specified for Calm and Windy climates. Results show a 1.53 times increase in maximum mean wind speed in the urban area after the construction of a square-shaped super-tall building. The escalated mean wind speeds result in a 23%–15% and 36%–29% decrease in the area with “acceptable wind comfort” in Calm and Windy climates, respectively. The area with pedestrian wind comfort varies significantly with building configuration and incident wind direction, for example, the configurations with sharp corners, large plan aspect ratios and, frontal areas and the orientation consistently show a strong dependency on incident wind direction except for the one with rounded plan shapes. Minor aerodynamic modifications such as corner modifications and aerodynamically-shaped configurations such as tapered and setback buildings show promise in improving pedestrian wind comfort in Windy climate.-
dc.languageeng-
dc.publisherSpringer Verlag, published in association with Tsinghua University Press. The Journal's web site is located at http://link.springer.com/journal/12273-
dc.relation.ispartofBuilding Simulation-
dc.rightsThis is a post-peer-review, pre-copyedit version of an article published in [insert journal title]. The final authenticated version is available online at: https://doi.org/[insert DOI]-
dc.subjectpedestrian wind comfort-
dc.subjectsuper-tall building-
dc.subjectbuilding configuration-
dc.subjecturban wind environment-
dc.subjectcomputational fluid dynamics simulation-
dc.titlePedestrian wind comfort near a super-tall building with various configurations in an urban-like setting-
dc.typeArticle-
dc.identifier.emailWeerasuriya, AU: asiriuw@hku.hk-
dc.identifier.emailLiu, CH: chliu@hkucc.hku.hk-
dc.identifier.authorityLiu, CH=rp00152-
dc.description.naturelink_to_OA_fulltext-
dc.identifier.doi10.1007/s12273-020-0658-6-
dc.identifier.pmid2837689-
dc.identifier.pmcidPMC7282207-
dc.identifier.scopuseid_2-s2.0-85086221877-
dc.identifier.hkuros317546-
dc.identifier.volume13-
dc.identifier.spage1385-
dc.identifier.epage1408-
dc.identifier.isiWOS:000539176700002-
dc.publisher.placeChina-
dc.identifier.issnl1996-3599-

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