Author(s)

H. Gun Sung, H. Baek, S. Hong & J.-S. Choi

Abstract

The present paper describes preliminary results of numerical simulation of VIV (vortex-induced-vibration) phenomenon around a pivoted circular cylinder subject to steady flow. The present flow model is based upon the Navier-Stokes equations with velocity-pressure formulation. The governing equations are solved through the Spectral Element Method (SEM), which possesses the property of high-order spatial accuracy as proposed by Karniadakis and Sherwin in their book Spectral/hp Element Methods for CFD. The solution procedure and characteristic aspects of the present modelling and numerical method are briefly stated. The coupling method of the body motion with the flow problem is restated from the viewpoint of the present problem. A series of numerical estimation of VIV flow characteristics have been carried out for varying parameters of the problem such as the reduced velocity and damping parameter, etc. Keywords: vortex-induced vibration, pivoted cylinder, spectral element method, coupling of body motion with flow. 1 Introduction In general, VIV (vortex-induced-vibration) problem is focused upon reduction and suppression of VIV as noted in Blevins [2] and Sarpkaya [3]. As indicated by Raghavan [4], and Bernitsas and Raghavan [5], however, it seems to be probable to extract considerable energy from VIV phenomena. For example, Professor Bernitsas has developed an energy extraction device known as

Keywords

vortex-induced vibration, pivoted cylinder, spectral element method, coupling of body motion with flow.