Abstract

In this study, the characteristics and cause of local peak pressure observed on the surface of a super high-rise building with lower parts in an actual urban area are investigated through a relationship with the flow characteristics. A large-eddy simulation (LES) of a high-density area including several super high-rise buildings is carried out using the turbulent inflow boundary condition. It is confirmed that the large peak suction near the windward corner of the target building is induced by the development of strong conical vortex. The rotation of a conical vortex is accelerated by the separated shear layer generated by the windward building and the lower part of the target building when negative peak pressure occurs.