Local and non-local effects of building arrangements on pollutant fluxes within the urban canopy
Local and non-local effects of building arrangements on pollutant fluxes within the urban canopy
This work investigates the vertical and horizontal mass (scalar) flux of a contaminant emitted from an area source located in an array of blocks representing an urban environment. Arrays consisting of buildings with random and uniform heights and staggered and aligned arrangements were tested. Results shows that the vertical scalar flux close to the source can affect downwind clean zones. It is also shown that taller buildings increase the vertical scalar flux and the fluctuations of the vertical velocity above the smaller buildings. The vertical advective scalar flux was found to have an effect on dispersion in the vicinity of the building (a local effect), while the vertical turbulent fluxes are associated with pollutant transportation downwind above the smaller buildings (a non-local effect).
23-34
Goulart, Elisa V.
506897c3-2b95-42e1-af9e-ba09757511b6
Reis Júnior, Neyval Costa
aa26b0ff-992f-42bc-8849-48b2b6788cd9
Lavor, Vito F
59637f6f-32ef-4830-bd43-9ee3f2a5698c
Castro, Ian
66e6330d-d93a-439a-a69b-e061e660de61
Santos, Jane Meri
c9fd2391-cab3-46d8-adcb-9067f7801cb1
Xie, Zheng-Tong
98ced75d-5617-4c2d-b20f-7038c54f4ff0
January 2019
Goulart, Elisa V.
506897c3-2b95-42e1-af9e-ba09757511b6
Reis Júnior, Neyval Costa
aa26b0ff-992f-42bc-8849-48b2b6788cd9
Lavor, Vito F
59637f6f-32ef-4830-bd43-9ee3f2a5698c
Castro, Ian
66e6330d-d93a-439a-a69b-e061e660de61
Santos, Jane Meri
c9fd2391-cab3-46d8-adcb-9067f7801cb1
Xie, Zheng-Tong
98ced75d-5617-4c2d-b20f-7038c54f4ff0
Goulart, Elisa V., Reis Júnior, Neyval Costa, Lavor, Vito F, Castro, Ian, Santos, Jane Meri and Xie, Zheng-Tong
(2019)
Local and non-local effects of building arrangements on pollutant fluxes within the urban canopy.
Building and Environment, 147, .
(doi:10.1016/j.buildenv.2018.09.023).
Abstract
This work investigates the vertical and horizontal mass (scalar) flux of a contaminant emitted from an area source located in an array of blocks representing an urban environment. Arrays consisting of buildings with random and uniform heights and staggered and aligned arrangements were tested. Results shows that the vertical scalar flux close to the source can affect downwind clean zones. It is also shown that taller buildings increase the vertical scalar flux and the fluctuations of the vertical velocity above the smaller buildings. The vertical advective scalar flux was found to have an effect on dispersion in the vicinity of the building (a local effect), while the vertical turbulent fluxes are associated with pollutant transportation downwind above the smaller buildings (a non-local effect).
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Building Env2018
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Accepted/In Press date: 14 September 2018
e-pub ahead of print date: 20 September 2018
Published date: January 2019
Identifiers
Local EPrints ID: 422247
URI: http://eprints.soton.ac.uk/id/eprint/422247
ISSN: 0360-1323
PURE UUID: 4d40fada-b0e1-4b18-bfcd-e49dff9c9855
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Date deposited: 19 Jul 2018 16:30
Last modified: 16 Mar 2024 06:50
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Contributors
Author:
Elisa V. Goulart
Author:
Neyval Costa Reis Júnior
Author:
Vito F Lavor
Author:
Jane Meri Santos
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