Abstract
The authors have examined the reliability of Large Eddy Simulation (LES) when applied to the flow analysis for unsteady surface pressure and aerodynamic forces acting on a 2-dimensional (2D) fixed cylinder. This paper deals with the interaction between fluid and body, i.e., the flowfields around oscillating square cylinders both in cases of forced oscillation and wind-induced free oscillation. Computations are based on 3-dimensional (3D) LES using the standard Smagorinsky subgrid scale model. A very simple procedure is used to incorporate the influence of body motion on the flowfield. The accuracy of the computations using this procedure is examined by comparing them with the experimental results of Bearman et al. and Nakamura et al..