Numerical Simulation of Interference Effect on Dynamic Wind Loading of Tall Buildings in Close Proximity by Large-Eddy Simulation

Abstract

We attempt to compute the dynamic wind loads on tall buildings in close proximity with large-eddy simulation. Computation is attempted on two building geometries on which strong interference effects have been reported in previous wind tunnel studies. The computation uses a commercial code and a simple model of turbulence characteristics of the incident wind flow. The computed along-wind and across-wind force spectra on the buildings could qualitatively explain the observed dynamic interference effects on the buildings, in particular, the modification or generation of large-scale quasi-periodic wind load fluctuations.