Local wind and rain conditions in semi-closed narrow corridors between buildings

Presented work is devoted to numerical analysis of wind flow in vicinity of recently renovated historical building. The analysed building is a part of larger old post industrial complex transformed into cultural centre. The original building was completely exposed to external climatic factors. During the recent modernization, the new buildings were built around the existing one forming external, narrow corridors.  In the first part of this study several cases of different layouts and dimensions were analysed and compared with the original case (building fully exposed to external weather conditions). The analysed environmental parameters were limited to direction and intensity of wind and rain according to climate weather database. In order to investigate the wind flow pattern in narrow corridor around analysed building numerical simulation have been done using realizable K - ε model. CFD simulations provided wind directions and velocities on several levels of the corridors. Initially the analysis were done for constant inlet wind speed 5m/s and two wind directions. From the obtained results the most favourable and unfavourable wind directions were identified based on the following criteria. Finally, west wind direction was chosen for further analysis of wind flow in the existing corridor.