Effects of side ratio on wind load characteristics on high-rise building

This study investigates the impact of varying side ratios (SR) on wind loads in high-rise buildings using wind tunnel tests and large eddy simulations. It assesses surface wind load by analyzing static three-component force coefficients and shape factors across different SRs. The results show that the model with D/B = 0.5 exhibits the largest mean and r.m.s drag forces, while the model with square cross section (D/B = 1) experiences the lowest torque. Meanwhile, the model with D/B = 0.5 reveals strong vertical but relatively weak horizontal wind pressure correlation. In addition, models with large SRs exhibit altered wind pressure mechanisms due to the occurrence of flow reattachment and secondary separation, resulting in lower side-surface correlation compared to small SR models.