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DISPERSION OF ROOF-TOP EMISSIONS FROM ISOLATED BUILDINGS. A WIND TUNNEL STUDY
Citation:
Thompson, Roger S. AND D. Lombardi. DISPERSION OF ROOF-TOP EMISSIONS FROM ISOLATED BUILDINGS. A WIND TUNNEL STUDY. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/4-77/006 (NTIS PB263901), 1977.
Description:
A fluid modeling study of the dispersion of roof-top emissions from rectangular buildings was performed in the meteorological wind tunnel of the EPA Fluid Modeling Facility. The basic building shape was a 0.18 meter cube. Variations included a building twice as wide and buildings twice and three times as high. Each building was placed in a 1.8 meter, simulated, neutral atmospheric boundary layer. Low momentum, non-buoyant emissions were released through an opening at the roof center. Photographs of flow visualization experiments are presented for a qualitative evaluation of the building wakes. Concentration measurements at ground level and aloft are presented for each case at downwind distances within 20 building heights. Concentrations are presented in a non-dimensional form for ease in application to full scale situations.