A jet plume model for short stacks

Abstract

This Note presents a plume dispersion model that contains a realistic initial jet region merged with a subsequent gaussian plume region. The model synthesizes three experimentally-verified elements of dispersion modeling: the initial jet region, the subsequent simple plume region and a curved plume centerline. Simplifying assumptions of neutral effluent buoyancy and homogeneous wind field enable the modeler, using only a desk calculator, to create a basic representation of the plume that can be modified subsequently to accommodate building-induced wind disturbances such as cavities, wakes and streamline curvature.