Wind tunnel simulation studies on dispersion at urban street canyons and intersections - a review

被引:251
作者
Ahmad, K
Khare, M [1 ]
Chaudhry, KK
机构
[1] Indian Inst Technol, Dept Civil Engn, New Delhi 110016, India
[2] Indian Inst Technol, Dept Appl Mech, New Delhi 110016, India
[3] Jamia Millia Islamia, Dept Civil Engn, New Delhi 110025, India
关键词
wind tunnel; street canyon; flow fields; exhaust dispersion; line source;
D O I
10.1016/j.jweia.2005.04.002
中图分类号
TU [建筑科学];
学科分类号
0813 ;
摘要
Increased traffic emissions and reduced natural ventilation cause build up of high pollution levels in urban street canyons/intersections. Natural ventilation in urban streets canyons/intersections is restricted because the bulk of flow does not enter inside and pollutants are trapped in the lower region. Wind vortices, low-pressure zones and channeling effects may cause build up of pollutants under adverse meteorological conditions within urban street canyons. The review provides a comprehensive literature on wind tunnel simulation studies in urban street canyons/intersections including the effects of building configurations, canyon geometries, traffic induced turbulence and variable approaching wind directions on flow fields and exhaust dispersion. (c) 2005 Elsevier Ltd. All rights reserved.
引用
收藏
页码:697 / 717
页数:21
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