UCL Discovery
UCL home » Library Services » Electronic resources » UCL Discovery

Tracer Flux Balance at an Urban Canyon Intersection

Carpentieri, M; Robins, AG; (2010) Tracer Flux Balance at an Urban Canyon Intersection. BOUNDARY-LAYER METEOROLOGY , 135 (2) 229 - 242. 10.1007/s10546-010-9471-6. Green open access

[thumbnail of DAPPLE_ffid_mass-balance_PP.pdf]
Preview
PDF
DAPPLE_ffid_mass-balance_PP.pdf
Available under License : See the attached licence file.

Download (739kB)

Abstract

Despite their importance for pollutant dispersion in urban areas, the special features of dispersion at street intersections are rarely taken into account by operational air quality models. Several previous studies have demonstrated the complex flow patterns that occur at street intersections, even with simple geometry. This study presents results from wind-tunnel experiments on a reduced scale model of a complex but realistic urban intersection, located in central London. Tracer concentration measurements were used to derive three-dimensional maps of the concentration field within the intersection. In combination with a previous study (Carpentieri et al., Boundary-Layer Meteorol 133:277–296, 2009) where the velocity field was measured in the same model, a methodology for the calculation of the mean tracer flux balance at the intersection was developed and applied. The calculation highlighted several limitations of current state-of-the-art canyon dispersion models, arising mainly from the complex geometry of the intersection. Despite its limitations, the proposed methodology could be further developed in order to derive, assess and implement street intersection dispersion models for complex urban areas.

Type: Article
Title: Tracer Flux Balance at an Urban Canyon Intersection
Open access status: An open access version is available from UCL Discovery
DOI: 10.1007/s10546-010-9471-6
Publisher version: http://dx.doi.org/10.1007/s10546-010-9471-6
Language: English
Additional information: The original publication is available at www.springerlink.com
Keywords: Flame ionisation detector, Flux balance, Street intersection, Urban canyon, Wind tunnel
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
URI: https://discovery.ucl.ac.uk/id/eprint/1383723
Downloads since deposit
278Downloads
Download activity - last month
Download activity - last 12 months
Downloads by country - last 12 months

Archive Staff Only

View Item View Item