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Conference Paper: Unsteady features of bluff body wake with application to building wake length

TitleUnsteady features of bluff body wake with application to building wake length
Authors
Keywordsbuilding wake
particle-image velocimetry
proper orthogonal decomposition
Issue Date2012
PublisherThe International Association for Wind Engineering (IAWE).
Citation
Proceedings of the 7th International Colloquium on Bluff Body Aerodynamics and Applications (BBAA7), Shanghai, China, 2-6 September 2012, p. 1796-1804 How to Cite?
AbstractABSTRACT: This study is targeted at obtaining fluctuating characteristics of building wakes through measurement of unsteady velocity fields with time-resolved particle image velocimetry (PIV). Proper orthogonal decomposition is applied to the PIV data to identify low-dimensional substructures of the building wake. This leads to a more reliable estimation of the fluctuating ground-level length of the building wake from an instantaneous PIV snapshot. The statistics of unsteady wake lengths is important in the probability-based risk assessment of critical events of wind environment around buildings such as dispersion of hazardous pollutants, pedestrian danger and risks to aircraft landings on airport runways.
Persistent Identifierhttp://hdl.handle.net/10722/199514

 

DC FieldValueLanguage
dc.contributor.authorCheng, Len_US
dc.contributor.authorLam, KMen_US
dc.date.accessioned2014-07-22T01:21:07Z-
dc.date.available2014-07-22T01:21:07Z-
dc.date.issued2012en_US
dc.identifier.citationProceedings of the 7th International Colloquium on Bluff Body Aerodynamics and Applications (BBAA7), Shanghai, China, 2-6 September 2012, p. 1796-1804en_US
dc.identifier.urihttp://hdl.handle.net/10722/199514-
dc.description.abstractABSTRACT: This study is targeted at obtaining fluctuating characteristics of building wakes through measurement of unsteady velocity fields with time-resolved particle image velocimetry (PIV). Proper orthogonal decomposition is applied to the PIV data to identify low-dimensional substructures of the building wake. This leads to a more reliable estimation of the fluctuating ground-level length of the building wake from an instantaneous PIV snapshot. The statistics of unsteady wake lengths is important in the probability-based risk assessment of critical events of wind environment around buildings such as dispersion of hazardous pollutants, pedestrian danger and risks to aircraft landings on airport runways.-
dc.languageengen_US
dc.publisherThe International Association for Wind Engineering (IAWE).-
dc.relation.ispartofInternational Colloquium on Bluff Body Aerodynamics and Applications (BBAA)en_US
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.subjectbuilding wake-
dc.subjectparticle-image velocimetry-
dc.subjectproper orthogonal decomposition-
dc.titleUnsteady features of bluff body wake with application to building wake lengthen_US
dc.typeConference_Paperen_US
dc.identifier.emailLam, KM: kmlam@hku.hken_US
dc.identifier.authorityLam, KM=rp00134en_US
dc.description.naturepublished_or_final_version-
dc.identifier.hkuros231344en_US
dc.identifier.spage1796en_US
dc.identifier.epage1804en_US

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