File Download
There are no files associated with this item.
Supplementary
-
Citations:
- Appears in Collections:
Conference Paper: Large Eddy Simulation of Reactive Pollutant Dispersion Over Street Canyons of Different Aspect Ratios
Title | Large Eddy Simulation of Reactive Pollutant Dispersion Over Street Canyons of Different Aspect Ratios |
---|---|
Authors | |
Issue Date | 2014 |
Publisher | The American Society of Mechanical Engineers (ASME). |
Citation | The 4th Joint US-European Fluids Engineering Summer Meeting (FEDSM 2014) and the 12th International Conference on Nanochannels, Microchannels, and Minichannels (ICNMM2014), Chicago, Illinois, USA, 3-7 August 2014, p. abstract no. 21252 How to Cite? |
Abstract | In urban areas, pollutants are emitted from vehicles then disperse from the ground level to the downstream urban canopy layer (UCL) under the effect of the prevailing wind. For a hypothetical urban area in the form of street canyons, the building-height-to-street-width (aspect) ratio (AR) changes the ground roughness which leads to different turbulent airflow features. Turbulence is considered an important factor for the removal of reactive pollutants by means of dispersion/dilution and chemical reactions. Three values of aspect ratio, covering most flow situations of urban street canyons, are employed in this study. The pollutant dispersion and reaction are calculated using large-eddy simulation (LES) with chemical reactions. Turbulence time scale and reaction time scale at every single point of the UCL domain are calculated to examine the pollutant removal. The characteristics and mechanism of reactive pollutant dispersion over street canyons will be reported in the conference. |
Description | Session1-28-3: Symposium on Urban Fluid Mechanics: Wind Engineering, Local Effect, Flood Prediction |
Persistent Identifier | http://hdl.handle.net/10722/204225 |
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Du, T | en_US |
dc.contributor.author | Liu, CH | en_US |
dc.contributor.author | Zhao, YB | en_US |
dc.date.accessioned | 2014-09-19T21:25:21Z | - |
dc.date.available | 2014-09-19T21:25:21Z | - |
dc.date.issued | 2014 | en_US |
dc.identifier.citation | The 4th Joint US-European Fluids Engineering Summer Meeting (FEDSM 2014) and the 12th International Conference on Nanochannels, Microchannels, and Minichannels (ICNMM2014), Chicago, Illinois, USA, 3-7 August 2014, p. abstract no. 21252 | en_US |
dc.identifier.uri | http://hdl.handle.net/10722/204225 | - |
dc.description | Session1-28-3: Symposium on Urban Fluid Mechanics: Wind Engineering, Local Effect, Flood Prediction | - |
dc.description.abstract | In urban areas, pollutants are emitted from vehicles then disperse from the ground level to the downstream urban canopy layer (UCL) under the effect of the prevailing wind. For a hypothetical urban area in the form of street canyons, the building-height-to-street-width (aspect) ratio (AR) changes the ground roughness which leads to different turbulent airflow features. Turbulence is considered an important factor for the removal of reactive pollutants by means of dispersion/dilution and chemical reactions. Three values of aspect ratio, covering most flow situations of urban street canyons, are employed in this study. The pollutant dispersion and reaction are calculated using large-eddy simulation (LES) with chemical reactions. Turbulence time scale and reaction time scale at every single point of the UCL domain are calculated to examine the pollutant removal. The characteristics and mechanism of reactive pollutant dispersion over street canyons will be reported in the conference. | en_US |
dc.language | eng | en_US |
dc.publisher | The American Society of Mechanical Engineers (ASME). | - |
dc.relation.ispartof | Joint US-European Fluids Engineering Summer Meeting (FEDSM) and International Conference on Nanochannels, Microchannels, and Minichannels (ICNMM) | en_US |
dc.title | Large Eddy Simulation of Reactive Pollutant Dispersion Over Street Canyons of Different Aspect Ratios | en_US |
dc.type | Conference_Paper | en_US |
dc.identifier.email | Liu, CH: chliu@hkucc.hku.hk | en_US |
dc.identifier.authority | Liu, CH=rp00152 | en_US |
dc.identifier.hkuros | 238781 | en_US |
dc.publisher.place | United States | - |