Evaluating Wind Interference Effects of Surrounding Tall Buildings on a Rectangular Tall Building Using Computational Fluid Dynamics

ABSTRACT This study employs computational fluid dynamics (CFD) to investigate the interference effects of side tall buildings (interfering building [IB]) on a tall rectangular building (primary building [PB]). Various configurations involving an IB and a PB are examined, with the IB being shifted in the x, y, and x‐y directions. Key aerodynamic parameters including force coefficients ( C F ), moment coefficients ( C M ), and mean pressure coefficients ( C PMEAN ) on the PB are analyzed to quantify the impact of IB locations. Findings reveal that shifting the IB by 0.2 L ( L is the length of PB) in the x or y direction leads to significant increases in C F and C M . Critical IB locations are identified, emphasizing the importance of specific displacement scenarios on building faces. Additionally, C PMEAN analysis highlights the heightened sensitivity of certain faces to IB positioning. Notably, the study underscores the substantial increase in pressure on the back face of the PB in certain configurations, necessitating careful consideration during construction. Furthermore, asymmetry in wake regions is observed, particularly near the right side face ( U ), indicating the need for special attention to side faces in similar building arrangements. These findings offer valuable insights for optimizing tall building designs in urban environments.