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Dispersion characteristics in the lee of complex structures

Dispersion characteristics in the lee of complex structures

Journal of the Air Pollution Control Association 32(5): 526-532

Pollutant dispersion in the immediate vicinity of structures was studied. Gas tracer data was analyzed to assess dispersion characteristics and model performance at 2 nuclear power plant sites. Regression analysis was used to test sensitivity of ground level concentration to various meteorological parameters and effluent release configurations. Various models and model inputs were evaluated against field measurements. Lidar data provided information on vertical and horizontal dispersion. Wind speed was a more skillfull predictor of ground level concentration than any other parameter available at the 2 study sites. Popular models of dispersion in the lee of structures performed poorly with a distinct trend toward increasing under-prediction with increasing wind speed. The usefulness of stability typing was questionable in view of a high sensitivity to the scheme used in typing. Site specific studies were indispensible for fairly accurate or conservative modeling of dispersion in the lee of complex structures.

Accession: 005170216

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DOI: 10.1080/00022470.1982.10465429

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