Time-domain model for prediction of generalized 3DOF buffeting response of tall buildings using 2D aerodynamic sectional properties

A time-domain method to calculate the buffeting response of a rectangular tall building (AR B/D = 1.5 and H/D 6) in along-wind, across-wind torsional degrees freedom using 2D aerodynamic sectional properties is presented here. The were identified first wind tunnel section models. Aerodynamic damping, which critical wind-induced analysis buildings, was calculated aeroelastic derivatives (flutter derivatives) validated by comparing with those extracted directly from measurements models building. good agreement between numerically simulated responses experimental an model (1:175 scale) shows capability proposed prediction generalized 3DOF buildings wide range speeds. Furthermore, two other cross-sectional shapes, circular elliptical, developed compared amongst three shapes study effect cross on response. relative dependency along each section, speed as well angle attack assessed. Finally, taper building’s studied showed that could significantly reduce buildings. assess loads based experimentally or theoretically derived two-dimensional sections, here, provides viable perhaps only alternative methods tests CFD simulations.