Numerical Predictions of the Responses of a Square Prism Based on the Approach of Rigid Aeroelastic Model

ABSTRACT: A numerical method is developed to predict the dynamic responses of a square prism based on the concept of a rigid aeroelastic model. Verification of the accuracy of the numerical model is firstly carried out by comparing the numerical results with those from available wind tunnel measurements. The model is then used to predict the responses of a prototype building. Based on the resulting along-wind and across-wind responses as well as the corresponding aerodynamic damping ratios, the mechanisms are investigated in detail.