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Modeling of plume downwash and enhanced diffusion near buildings: comparison to wind tunnel observations for an Arctic industrial site


The ability of a modified Industrial Source Complex model to simulate concentration distributions resulting from high wind speeds (neutral conditions) has been evaluated by comparison to data from a wind tunnel study of a Prudhoe Bay, AK oil-gathering center characterized by short stacks and interconnected buildings. The model tends to predict correctly the concentrations further downwind (500-1700 m) and underpredict the higher concentrations in the building wake region from 3 to 10 building heights downwind (100-350 m). The model cannot be used to predict concentrations at downwind distances less than 100 m where the maximum concentrations typically occurred. A large variation in the amount of building enhanced diffusion was observed for different wind directions. -from Authors

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