||Building Effects on Heavy Gas Jet Dispersion.
Schatzmann, M. ;
Snyder, W. H. ;
Lawson, R. E. ;
||Hamburg Univ. (Germany, F.R.). Meteorological Inst.;Environmental Protection Agency, Research Triangle Park, NC. Atmospheric Research and Exposure Assessment Lab.;North Carolina State Univ. at Raleigh. Dept. of Marine, Earth and Atmospheric Sciences.
Gas flow ;
Air pollution ;
Environmental transport ;
Risk assessment ;
Wind tunnels ;
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A wind tunnel study was performed to determine the effect of a single building on the dispersion characteristics of a high-momentum heavy gas jet as it might emerge from the release valve of a pressurized storage tank. Building-surface concentrations have been measured at corresponding locations with and without the building for varying wind speeds, wind directions, source/building distances and building shapes. It was found that, compared with a free jet at corresponding distances, the presence of a single building decreases rather than increases building-surface concentration maxima and lowers the flammability or toxicity radii.