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Vortex induced vibration of a circular cylinder through its slow phase dynamics: theory vs. experiments

By François Rigo, Thomas Andrianne and Vincent Denoël

Abstract

The wake-oscillator model of Tamura for Vortex induced vibration (VIV) under free vibration conditions is deeply analysed for parameters identification through a perturbation methods analysis. In the slow phase model of VIV, a simple analytic solution for the amplitude of motion and phase is derived. The model is proved to be accurate for the estimation of the maximum amplitude and lock-in range. Results show that the phase between the displacement and the wake variable plays a key role in the lock-in mechanism and needs to be measured experimentally in further studies. The proposed parameter identification is direct thanks to analytical expressions and will be used in further experiments involving other shapes and tandem cylinders.Peer reviewe

Topics: Vortex induced vibration, perturbation methods, wind tunnel experimental testing, Engineering, computing & technology :: Aerospace & aeronautics engineering, Ingénierie, informatique & technologie :: Ingénierie aérospatiale
Year: 2020
OAI identifier: oai:orbi.ulg.ac.be:2268/244904
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