Static wind pressure and force effect on Y-Plan building in presence of adjacent buildings

The regions where wind velocity is high, large lateral loads occur on asymmetric and tall buildings. A detailed wind analysis has been presented in this document on the principal Y-Plan building interfered by two square plan buildings put in a Lshape pattern. Moreover, 0° to 180° at a step size of 15° wind angles have been considered. It is revealed by the results that presence of interfering buildings imposed significant fluctuations in force and wind pressure. For the windward side and the leeward side, wind flow profile is same but for faces A, G, H and I i.e., faces receiving the blockage of wind by interfering buildings, it is different. Increasing angle of attack (AOA) increased the velocity to 2.95 m/s in interference case as compared to velocity of 1.37 m/s in isolated case for 60° wind angle because of blockage of wind and generation of wake region is more in interference case by the presence of interfering buildings. The highest positive value of interference factor (I.F.) is for Face H and Face I with values of 2.019 and 2.454 respectively for 0° AOA of wind while the most negative value is for Face B with value of -1.702 for 0° AOA. Most of the faces have the values of interference factor near about 1 indicating that interfering buildings on these faces do not produce much effect on the principal building.