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Conference Paper: Analysis of the momentum and pollutant transport at the roof level of 2D idealized street canyons: a large-eddy simulation solution
| Title | Analysis of the momentum and pollutant transport at the roof level of 2D idealized street canyons: a large-eddy simulation solution |
|---|---|
| Authors | |
| Issue Date | 2010 |
| Publisher | European Geosciences Union. The Journal's web site is located at http://www.geophysical-research-abstracts.net |
| Citation | The 7th General Assembly of the European Geosciences Union (EGU2010), Vienna, Austria, 2-7 May 2010. In Geophysical Research Abstracts, 2010, v. 12, EGU2010-1486-1 How to Cite? |
| Abstract | To investigate the detailed momentum and pollutant transports between urban street canyons and the shear layer, a large-eddy simulation (LES) model was developed to calculate the flow and pollutant dispersion in isothermal conditions. The computational domain consisted of three identical two-dimensional (2D) idealized street canyons of unity aspect ratio. The flow field was assumed to be periodic in the horizontal domain boundaries. The subgrid-scale (SGS) stress was calculated by solving the SGS turbulent kinetic energy (TKE) conservation. An area pollutant source with constant pollutant concentration was prescribed on the ground of all streets. Zero pollutant concentration and an open boundary were applied at the domain inflow and outflow, respectively. The quadrant and budget analyses were employed to examine the … |
| Persistent Identifier | http://hdl.handle.net/10722/126292 |
| DC Field | Value | Language |
|---|---|---|
| dc.contributor.author | Cheng, WC | en_HK |
| dc.contributor.author | Liu, CH | en_HK |
| dc.date.accessioned | 2010-10-31T12:20:25Z | - |
| dc.date.available | 2010-10-31T12:20:25Z | - |
| dc.date.issued | 2010 | en_HK |
| dc.identifier.citation | The 7th General Assembly of the European Geosciences Union (EGU2010), Vienna, Austria, 2-7 May 2010. In Geophysical Research Abstracts, 2010, v. 12, EGU2010-1486-1 | en_HK |
| dc.identifier.uri | http://hdl.handle.net/10722/126292 | - |
| dc.description.abstract | To investigate the detailed momentum and pollutant transports between urban street canyons and the shear layer, a large-eddy simulation (LES) model was developed to calculate the flow and pollutant dispersion in isothermal conditions. The computational domain consisted of three identical two-dimensional (2D) idealized street canyons of unity aspect ratio. The flow field was assumed to be periodic in the horizontal domain boundaries. The subgrid-scale (SGS) stress was calculated by solving the SGS turbulent kinetic energy (TKE) conservation. An area pollutant source with constant pollutant concentration was prescribed on the ground of all streets. Zero pollutant concentration and an open boundary were applied at the domain inflow and outflow, respectively. The quadrant and budget analyses were employed to examine the … | - |
| dc.language | eng | en_HK |
| dc.publisher | European Geosciences Union. The Journal's web site is located at http://www.geophysical-research-abstracts.net | - |
| dc.relation.ispartof | Geophysical Research Abstracts | - |
| dc.rights | Author owns CopyRight | - |
| dc.title | Analysis of the momentum and pollutant transport at the roof level of 2D idealized street canyons: a large-eddy simulation solution | en_HK |
| dc.type | Conference_Paper | en_HK |
| dc.identifier.email | Liu, CH: chliu@hkucc.hku.hk | en_HK |
| dc.identifier.authority | Liu, CH=rp00152 | en_HK |
| dc.description.nature | published_or_final_version | - |
| dc.identifier.hkuros | 179362 | en_HK |
| dc.identifier.volume | 12 | - |
| dc.description.other | The 7th General Assembly of the European Geosciences Union (EGU2010), Vienna, Austria, 2-7 May 2010. In Geophysical Research Abstracts, 2010, v. 12, EGU2010-1486-1 | - |