CFD and Experimental Investigation of the Impact of Dimensional Modifications on Wind Pressure Coefficient Distribution

The sway of tall buildings in the wind is a fascinating and crucial consideration for professionals in the structural, environmental, and architectural fields. Previous research has related wind pressure to building load and natural ventilation, but few studies have looked at how building dimensions impact wind pressure. This study examined wind pressure coefficient distributions within and around several rectangular-shaped high-rise buildings using experimental and computational fluid dynamics approaches. The height-to-width ratio and height-to-thickness (length) ratio significantly affected the wind characteristics of buildings. The windward side with a narrower width experienced higher wind pressure, while the larger leeward side experienced a more negative wind effect. Wind pressure coefficient distribution varies with decrease in the side ratio. However, the side ratio of the building had little influence on positive wind pressure at wind incidence angle of 0°, which was a surprising finding. Pressure coefficients were evaluated and compared with standards by measuring fluctuating wind pressures at pressure points on all surfaces of models, and then calculating the mean, maximum, minimum, and r.m.s. values of these coefficients.