Use Of Cfd Simulations To Improve The Pedestrian Wind Comfort Around A High Rise Building In A Complex Urban Area

Wind comfort around a high-rise building in a complex urban environment is studied by combining Computational Fluid Dynamics (CFD) with the Dutch wind nuisance standard NEN 8100. The CFD simulations are performed with the 3D steady Reynolds-averaged Navier-Stokes (RANS) equations and the realizable k-ε model. Simulations are conducted according to best practice guidelines in CFD and are compared with on-site measurements at three street positions. The study shows that the highrise building is the main cause of the wind nuisance at its base, as it catches the oncoming wind and deviates it to pedestrian level. Therefore, as a remedial measure, different sizes of canopies attached to the tower on both the south-southwest and the east-southeast side are studied.