AEROSOL TRANSPORT AND PRECIPITATION SIMULATION WITH THE MONTE CARLO METHOD

N. V. Ivanоv, V. N. Pisкunоv
VANT. Ser. Mat. Mod. Fiz. Proc 1991. Вып.2. С. 73-78.

      A turbulent diffusion semi-empirical equation is used to consider the transport of aerosol particles in air. Velocity and diffusion coefficients are assumed to be only a function height. The Monte Carlo method is applied to numerically solve the diffusion equation with the attention focused on (Calculating the density of particle precipitation on an underlying surface.
      A source equation factorization is proposed, which allows to obtain a solution for a 3-D problem by modelling a 1-D diffusion process with height.
      Analytic solutions for a 1-D diffusion equation with constant coefficients served to develope an efficient scheme for numerical simulation of particle paths. Problems having analytical solutions were used to show the possibilities of the procedure.
      The procedure proposed can be applied to a broad class of problems in air and envir6nment physics.