2009
DOI: 10.1016/j.atmosenv.2009.02.061
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Flow and dispersion in street intersections

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Cited by 111 publications
(73 citation statements)
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“…On the contrary, flow instabilities and threedimensional effects within the intersection (see also Carpentieri et al, 2009) resulted in about 13% of the incoming mean flux from Gloucester Place continuing along that street, north of the intersection. This feature is not necessarily observed in more regular street canyon intersections (Soulhac et al, 2009) and should be taken into account by street intersection dispersion models. Many regulatory models neglect any interactions of the type found here and simply add the contributions from the two streets forming the intersection, thus neglecting the 85% of the flux from Gloucester Place that transfers into Marylebone Road (east) and the 50% of the flux from Marylebone Road into Gloucester Place (north) and, therefore, failing to provide a realistic prediction of concentration levels.…”
Section: Discussionmentioning
confidence: 99%
“…On the contrary, flow instabilities and threedimensional effects within the intersection (see also Carpentieri et al, 2009) resulted in about 13% of the incoming mean flux from Gloucester Place continuing along that street, north of the intersection. This feature is not necessarily observed in more regular street canyon intersections (Soulhac et al, 2009) and should be taken into account by street intersection dispersion models. Many regulatory models neglect any interactions of the type found here and simply add the contributions from the two streets forming the intersection, thus neglecting the 85% of the flux from Gloucester Place that transfers into Marylebone Road (east) and the 50% of the flux from Marylebone Road into Gloucester Place (north) and, therefore, failing to provide a realistic prediction of concentration levels.…”
Section: Discussionmentioning
confidence: 99%
“…Characteristics of the transport pollution within the street intersection can be found in recent works [4][5][6]. Understanding processes of pollution transport in complex urban areas is important for estimation of ventilation intensity in the polluted street canyons, for finding suitable configuration of built-up areas and for developing local scale dispersion models.…”
Section: Introductionmentioning
confidence: 99%
“…• the advective fluxes along the street axes which produce the channeling of pollutant along directions not generally parallel to the external wind direction (Soulhac et al, 2009);…”
Section: Introductionmentioning
confidence: 99%
“…The exchange process within an intersection is simulated by an empirically based algorithm (Soulhac et al, 2009) that computes the partition of the mass fluxes along the street segments as a function of the geometry of the intersection, the external wind direction and σ φ , the standard deviation of the external wind direction fluctuations. The parameter σ φ is estimated by similarity relations as a function on the external boundary layer conditions.…”
Section: Introductionmentioning
confidence: 99%