摘要

A new simple Lagrangian dispersion model for neutral atmospheric boundary layer is proposed. A version of the Generalized Langevin equation corresponding to the Isotropization of Production Reynolds stress model is applied to horizontally homogeneous equilibrium turbulent boundary layer. Constrains for the model constants are derived from the selfsimilarity condition of near-wall turbulence. The proposed model is tested for the prediction of dispersion due to a point source in two dimensions and compared with available experimental data and other well-known models.