Wind Pressure and Velocity Distributions around an Irregular Plan-shaped Building

Abstract

Wind is a significant architectural design parameter to be considered during the initial phase of the design stage. However, there are very few studies on the wind behaviour of buildings in the architectural field. Understanding the behaviour of buildings under wind loads is significant to developing solutions at every stage of the design phase. This study presents the numerical examination of wind pressure distributions on U-plan-shaped buildings with four different depth ratios of 0.5, 1, 2, and 4 over a wind incidence angle of 0°. Models were examined with 2 and 5 m/s wind velocity values. This study aims to examine the effect of depth ratios and wind velocity values on an irregular building. Wind pressure distributions around models, wind velocity distributions, wind flows and streamlines have been comprehensively evaluated. As a result of the studies, it has been observed that according to the wind pressure distributions around building models, when the U1, U2 and, U7, U8 models are compared, it can be seen that the negative pressure difference decreases slightly as the depth ratio decreases. Furthermore, as the wind velocity increased, the negative pressure difference decreased. It was observed that there was no significant difference in terms of positive pressure values. Moreover, it was observed that from the height level of H/3 to 2H/3, the vortex region decreases. This vortex area is more significant in the U7 model, which has a depth ratio of 0.5. The vortex area increases as the depth ratio decreases.