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Conference Paper: Wind Tunnel Study of Plume Dispersion over Hypothetical Urban Areas
| Title | Wind Tunnel Study of Plume Dispersion over Hypothetical Urban Areas |
|---|---|
| Authors | |
| Issue Date | 2017 |
| Citation | Proceedings of the International Workshop on Physical Modelling of Flow and Dispersion Phenomena (PHYSMOD2017): Ecole Centrale de Nantes, France, 23-25 August 2017, p. 20-25 How to Cite? |
| Abstract | Gaussian dispersion models have been well received in the industry for decades but its accuracy for urban setting is questionable because their dispersion coefficients were largely determined empirically based on open-terrain configurations. We report in this paper our laboratory wind tunnels experiments that characterize tracer plume dispersion over hypothetical urban areas in isothermal conditions. It is shown that the vertical dispersion coefficient σz is tightly affected by the friction factor f, distance after the source x and thickness of turbulent boundary layer δ in the form σz ∞ x1/2×δ1/2×f1/4, suggesting a new handy parameterization of plume dispersion over urban areas. |
| Description | Session: Flow and Dispersion in Urban Area Hosted by Centrale Nantes and the LHEEA research laboratory |
| Persistent Identifier | http://hdl.handle.net/10722/247847 |
| DC Field | Value | Language |
|---|---|---|
| dc.contributor.author | Liu, CH | - |
| dc.contributor.author | Mo, Z | - |
| dc.contributor.author | Wu, Z | - |
| dc.date.accessioned | 2017-10-18T08:33:36Z | - |
| dc.date.available | 2017-10-18T08:33:36Z | - |
| dc.date.issued | 2017 | - |
| dc.identifier.citation | Proceedings of the International Workshop on Physical Modelling of Flow and Dispersion Phenomena (PHYSMOD2017): Ecole Centrale de Nantes, France, 23-25 August 2017, p. 20-25 | - |
| dc.identifier.uri | http://hdl.handle.net/10722/247847 | - |
| dc.description | Session: Flow and Dispersion in Urban Area | - |
| dc.description | Hosted by Centrale Nantes and the LHEEA research laboratory | - |
| dc.description.abstract | Gaussian dispersion models have been well received in the industry for decades but its accuracy for urban setting is questionable because their dispersion coefficients were largely determined empirically based on open-terrain configurations. We report in this paper our laboratory wind tunnels experiments that characterize tracer plume dispersion over hypothetical urban areas in isothermal conditions. It is shown that the vertical dispersion coefficient σz is tightly affected by the friction factor f, distance after the source x and thickness of turbulent boundary layer δ in the form σz ∞ x1/2×δ1/2×f1/4, suggesting a new handy parameterization of plume dispersion over urban areas. | - |
| dc.language | eng | - |
| dc.relation.ispartof | International Workshop on Physical Modelling of Flow and Dispersion Phenomena, PHYSMOD2017 | - |
| dc.title | Wind Tunnel Study of Plume Dispersion over Hypothetical Urban Areas | - |
| dc.type | Conference_Paper | - |
| dc.identifier.email | Liu, CH: chliu@hkucc.hku.hk | - |
| dc.identifier.authority | Liu, CH=rp00152 | - |
| dc.identifier.hkuros | 281388 | - |
| dc.identifier.spage | 20 | - |
| dc.identifier.epage | 25 | - |