Interest in the mechanisms of gaseous plume dispersal has increased rapidly over the past forty years. Most efforts have been directed toward understanding diffusion in idealized situations. During the last ten years many authors have stressed the importance of understanding the dispersal processes of gas plume in situations of practical impor¬tance. In spite of the high quality and extent of these initial tests the lack of a complete understanding of pollutant behavior in the vicinity of building structures is evident. Many important situations have not been correctly described and the majority of measurements made are not easily correlatable or comparable.nThis report- presents the results of a systematic experimental study of the entrainment problem in the vicinity of rounded building geometries;the effect of thermal stratification on dispersion near building structures, and the effect of short-stack release height and exhaust velocities. The approach attempts to isolate the peculiarities of such configurations in an effort to make appropriate field predictions possible.nThe ultimate objective of this study on gaseous effluent behavior was to help develop a technology which will result in faster, safer and more economical dispersal of gaseous reactor wastes.
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