Abstract
The Vortex-Induced Vibration on a circular cylinder is investigated by the numerical solution of the two-dimensional Reynolds Averaged Navier-Stokes equations. Results are compared with experimental measurements obtained by different author to verify the quality of the numerical solution. The Beam and Warming implicit factorization scheme is used to solve the governing equations and the Baldwin - Lomax model is used to simulate the turbulent flow in the wake of the cylinder. The cylinder is laterally supported by a spring and a damper and free to oscillate in the transversal direction. The numerical results showed that the curve of transversal oscillation amplitude presents a quite different behaviour as the data is obtained with increasing or decreasing velocity, characterizing a hysteresis effect. The best agreement with experiment is obtained as the numerical results are obtained with decreasing velocity.
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