Modelling street-scale flow and dispersion in realistic winds – towards coupling with mesoscale meteorological models
Modelling street-scale flow and dispersion in realistic winds – towards coupling with mesoscale meteorological models
Further to our previous work – simulations of flow and dispersion in an oblique wind over the DAPPLE site (Xie ZT & Castro IP, Atmospheric Environment, 2009, Vol.43, 2174-2185)– large-eddy simulations of flows and dispersion over the same site in a wind perpendicular to Marylebone Road and the windward surfaces of most of the buildings were performed. The DAPPLE site is located at the intersection of Marylebone Road and Gloucester Place in central London. In order to investigate the effects of wind direction on flows and dispersion, the velocity and scalar fields in the perpendicular wind were compared with those in the oblique wind. Furthermore, realistic wind conditions measured on the BT Tower at 190 m above street level were processed and used to drive the numerical simulations of flows and dispersion at the DAPPLE site. This leads to significant predictive improvements of the dispersion compared with field measurements, which provides validation and confidence for coupling mesoscale meteorological models, e.g. the UK Met Office’s Unified Model and the NCAR’s Weather Research & Forecasting Model, with the street-scale large-eddy simulation of urban environments
large-eddy simulation, neighbourhood scale, urban dispersion, wind variation
53-75
Xie, Zheng-Tong
98ced75d-5617-4c2d-b20f-7038c54f4ff0
October 2011
Xie, Zheng-Tong
98ced75d-5617-4c2d-b20f-7038c54f4ff0
Xie, Zheng-Tong
(2011)
Modelling street-scale flow and dispersion in realistic winds – towards coupling with mesoscale meteorological models.
Boundary-Layer Meteorology, 141 (1), .
(doi:10.1007/s10546-011-9629-x).
Abstract
Further to our previous work – simulations of flow and dispersion in an oblique wind over the DAPPLE site (Xie ZT & Castro IP, Atmospheric Environment, 2009, Vol.43, 2174-2185)– large-eddy simulations of flows and dispersion over the same site in a wind perpendicular to Marylebone Road and the windward surfaces of most of the buildings were performed. The DAPPLE site is located at the intersection of Marylebone Road and Gloucester Place in central London. In order to investigate the effects of wind direction on flows and dispersion, the velocity and scalar fields in the perpendicular wind were compared with those in the oblique wind. Furthermore, realistic wind conditions measured on the BT Tower at 190 m above street level were processed and used to drive the numerical simulations of flows and dispersion at the DAPPLE site. This leads to significant predictive improvements of the dispersion compared with field measurements, which provides validation and confidence for coupling mesoscale meteorological models, e.g. the UK Met Office’s Unified Model and the NCAR’s Weather Research & Forecasting Model, with the street-scale large-eddy simulation of urban environments
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blm11_r3.pdf
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More information
Published date: October 2011
Keywords:
large-eddy simulation, neighbourhood scale, urban dispersion, wind variation
Organisations:
Aerodynamics & Flight Mechanics
Identifiers
Local EPrints ID: 190635
URI: http://eprints.soton.ac.uk/id/eprint/190635
ISSN: 0006-8314
PURE UUID: e468e502-f77c-475f-8f46-94016f4af7c7
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Date deposited: 14 Jun 2011 08:46
Last modified: 15 Mar 2024 03:20
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