Effects of building configuration on indoor pollutant transportation of naturally ventilated buildings

![CDATA[For wind-induced natural ventilated building, the presence of interfering surrounding buildings and the target building’s envelops are two main factors to affect the indoor air flow characteristics and inter-unit pollutant dispersion. In this work, Computational Fluid Dynamics (CFD) method was employed to investigate inter-unit pollutant transportation under the hypothesis that infectious respiratory aerosols exhausted from a unit can re-enter into another unit in a same building through openings. The effect of an upstream interfering building and two types of wing walls are both considered under normal and oblique wind. The results show that the target building generally has a better natural ventilation performance when the wind obliquely incidents on the building. The presence of upstream building will increase the indoor ventilation performance but increase the pollutant re-entry ratio.]]