Experimental study of temperature and airflow distribution inside an urban street canyon during hot summer weather conditions. Part II: Airflow analysis

This paper presents the results of an urban measurement campaign performed in a street canyon in Athens, Greece. A number of field experimental procedures were organized during hot weather conditions, on a 24-h basis for five consecutive days during July 2002. Wind velocity measurements were conduct...

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Bibliographic Details
Published in:Building and environment 2008-08, Vol.43 (8), p.1393-1403
Main Authors: Niachou, K., Livada, I., Santamouris, M.
Format: Article
Language:English
Subjects:
air flow
Airflow
Canyons
Circulation
Field experiments
Finite length canyon effects
Greece
Heating
Hot weather
Intersections
Mathematical analysis
Meteorology
Q1
Q3
Solar radiation
Street canyons
summer
Surface temperature
Temperature
temperature measurement
Thermal effects
Urban environments
Urban street canyon
Velocity
Ventilation
Weather
Weather conditions
Wind velocity measurement
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Summary:This paper presents the results of an urban measurement campaign performed in a street canyon in Athens, Greece. A number of field experimental procedures were organized during hot weather conditions, on a 24-h basis for five consecutive days during July 2002. Wind velocity measurements were conducted inside and outside the street canyon together with air and surface temperature measurements. Based on the results of air and surface temperature measurements, a further analysis is performed for the investigation of airflow inside the canyon when the ambient flow is parallel, perpendicular and oblique relative to the long canyon axis. The observed airflow characteristics are associated with the impact of thermal effects mainly induced from ground heating due to the incident solar radiation. However, the role of the finite length canyon effects related to wind circulation near street intersections, on the observed airflow patterns, is also identified.
ISSN:0360-1323
1873-684X
DOI:10.1016/j.buildenv.2007.01.040