TY - JOUR
TI - On the wind flow patterns under neutral and unstable conditions in an urban area
AU - Nezis, A.A.
AU - Angelidis, D.I.
AU - Assimakopoulos, V.D.
AU - Bergeles, G.C.
JO - International Journal of Environment and Pollution
PY - 2011
VL - 47
TODO - 1-4
SP - 257-267
PB - Inderscience Publishers
SN - 0957-4352, 1741-5101
TODO - 10.1504/IJEP.2011.047340
TODO - Computational fluid dynamics;  Thermal stratification;  Wind tunnels, Buoyancy induced flow;  Cartesian grid;  Pollutant dispersions;  Temperature stratification;  Unstable conditions;  Urban street canyon;  Wind tunnel measurements;  Wind-flow pattern, Atmospheric movements, air temperature;  airflow;  algorithm;  anemometer;  atmospheric pollution;  buoyancy forcing;  computational fluid dynamics;  street canyon;  two-dimensional modeling;  urban atmosphere;  wind tunnel, air pollutant;  airflow;  anemometer;  article;  mathematical analysis;  urban area;  wind
TODO - Wind flow and pollutant dispersion within urban areas depend on the approaching flow profile and temperature stratification. Thus, the flow field developed under neutral and unstable stratification conditions, within a street-canyon, was studied experimentally and numerically for a two-dimensional urban background set-up. Wind-tunnel measurements were carried out with a triple hot sensor anemometer, while an academically developed CFD κ-ε algorithm was applied, employing an unstructured Cartesian grid. The numerical code compared well with experimental results. Under unstable conditions, intensive mixing exists within the street-canyons and the buoyancy-induced flow affects the vertical air motions within and above them. Copyright © 2011 Inderscience Enterprises Ltd.
ER -