CFD ANALYSIS OF WIND-STRUCTURE INTERACTION FOR OSCILLATING SQUARE CYLINDERS

This paper deals with the interaction between fluid and body, i.e., th e flowfields around oscillating square cylinders both in cases of forc ed oscillation and wind-induced free oscillation. Computations are bas ed on three-dimensional (3D) LES using the standard Smagorinsky sub-gr id scale model to describe the unsteady pressure fields. A very simple procedure to incorporate the influence of body motion on the flowfiel d is used. The accuracy of the computations using this procedure is ma de clear by comparing them with the experimental results of Bearman et al. [J. Fluid. Mech. 119 (1982) 297-321] and Nakamura et al. [J. Eng. Mech. Div. ASCE No. EM6 (1975) 855-871].