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Conference Paper: Unsteady features of bluff body wake with application to building wake length
Title | Unsteady features of bluff body wake with application to building wake length |
---|---|
Authors | |
Keywords | building wake particle-image velocimetry proper orthogonal decomposition |
Issue Date | 2012 |
Publisher | The 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? |
Abstract | ABSTRACT: 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 Identifier | http://hdl.handle.net/10722/199514 |
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Cheng, L | en_US |
dc.contributor.author | Lam, KM | en_US |
dc.date.accessioned | 2014-07-22T01:21:07Z | - |
dc.date.available | 2014-07-22T01:21:07Z | - |
dc.date.issued | 2012 | en_US |
dc.identifier.citation | Proceedings of the 7th International Colloquium on Bluff Body Aerodynamics and Applications (BBAA7), Shanghai, China, 2-6 September 2012, p. 1796-1804 | en_US |
dc.identifier.uri | http://hdl.handle.net/10722/199514 | - |
dc.description.abstract | ABSTRACT: 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.language | eng | en_US |
dc.publisher | The International Association for Wind Engineering (IAWE). | - |
dc.relation.ispartof | International Colloquium on Bluff Body Aerodynamics and Applications (BBAA) | en_US |
dc.subject | building wake | - |
dc.subject | particle-image velocimetry | - |
dc.subject | proper orthogonal decomposition | - |
dc.title | Unsteady features of bluff body wake with application to building wake length | en_US |
dc.type | Conference_Paper | en_US |
dc.identifier.email | Lam, KM: kmlam@hku.hk | en_US |
dc.identifier.authority | Lam, KM=rp00134 | en_US |
dc.description.nature | published_or_final_version | - |
dc.identifier.hkuros | 231344 | en_US |
dc.identifier.spage | 1796 | en_US |
dc.identifier.epage | 1804 | en_US |