| Abstract: | Numerical analysis has been performed for predicting the dispersion of continuous released neutral gases (i.e. stack gases) from elevated or near-ground sources within regions of complex topography. The three-dimensional non-steady governing transport differential equations are solved by means of the numerical finite volume method, using a collocated variable arrangement. The turbulence effects on the flow property transport are simulated by the two-equation k-ε turbulence model. Comparisons between calculated and measured data are presented, showing good agreement between them. The method is employed to predict continuous releases within a fictitious industrial plant. The height of the source, the atmospheric stability class, the topography and the wind speed and primary direction are varied, in order to point out the effect of topography on the pollutant's dispersion. |
