On optimal CFD scheme for the simulation of air pollutant dispersion near or around buildings

摘要

This paper investigated how to produce an optimal CFD scheme for the simulation of air pollutant dispersion in a built-up area. The underlying principles related to an optimal CFD calculation were discussed. A case study was carried out to investigation the special considerations associated with pollutant dispersion in built-up environment. Results obtained from this investigation show that for an optimal CFD scheme applied in built-up area the selection of turbulence modeling method is most critical, and thus the accuracy requirement for a specified dispersion simulation should be considered with its computational costs.