||Evidence of Enhanced Vertical Dispersion in the Wakes of Tall Buildings in Wind Tunnel Simulations of Lower Manhattan.
||Environmental Protection Agency, Research Triangle Park, NC. National Exposure Research Lab. ;National Oceanic and Atmospheric Administration, Research Triangle Park, NC. Air Resources Lab.
Wind tunnel tests;
Atmospheric boundary layer;
Laser doppler anemometers;
World Trade Center;
New York City(New York);
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
||one CD-ROM disc
||Observations of flow and dispersion in urban areas with tall buildings have revealed a phenomenon whereby contaminants can be transported vertically up the lee sides of tall buildings due to the vertical flow in the wake of the building. This phenomenon, which contributes to what is sometimes called rapid vertical dispersion, has important consequences for the dispersion of pollutants in urban areas and its understanding may be crucial to improving urban dispersion models. This venting effect was observed in a wind-tunnel study of dispersion from the site of the destroyed World Trade Center (WTC) in New York City, using a scale model of lower Manhattan, including a scaled representation of the rubble pile.
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||68A; 91A; 43F