Numerical Modeling of Atmospheric Pollutants Dispersion Taking Into Account Particles Settling Velocity

The article discusses the numerical modeling of the process of atmospheric pollutants dispersion taking into account particles settling velocity. A model of the process is described by partial differential equations with corresponding initial and boundary conditions. In deriving the model, the basic laws of hydrodynamics were used as well as a set of parameters that significantly affect the process: weather conditions; atmosphere absorption capacity; particles properties, etc. An equation was developed for calculating the settling velocity of solid spherical particles. For the numerical solution of the problem, the implicit finite-difference scheme in time with the second-order approximation was used.

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