Abstract
This paper presents a complete algorithm for applying the Gaussian method to the most general and complex dispersion conditions. The plume evolution is described by transport and diffusion of a series of independent puffs, thus allowing the treatment of non-homogeneous, non-stationary conditions which characterize both short-range dispersion in complex terrain and long-range transport of pollutants. Physical and numerical problems related to the application of the puff model are discussed, and a general computer-oriented methodology proposed. This method provides a more numerically-accurate representation of plume characteristics and can handle both transport and calm conditions.
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