A perspective on the aerodynamics and aeroelasticity of tapering: Partial reattachment

Tapering is a common morphological modification to ensure the stability of civil structures, especially as more and high-rise buildings push skyline modern cities. However, aerodynamics, aeroelasticity, fluid-structure-interaction tapering remain far from been fully understood. Through wind tunnel tests, present work offers some notable observations on effects tapering, specifically considering different attack angles, velocities, structural rigidities. A novel phenomenon unique discovered termed partial reattachment. It depicts reattachment shear layer onto tapered face, which suppresses vortex shedding in reattached regions forms separation envelope. also propagates base free end with an increasing angle, ultimately transforms into complete Consequently, behavioral bi-polarities force, characteristics, cross-point correlation are observed. Aeroelastically, promotes unsteady effect VIV-galloping interaction near free-end, making prism susceptible wind-induced vibrations. With introduces discontinuous phenomenon, subjected intensity demarcation.