Eventos Anais de eventos
DINAME2019
DINAME2019
Calibrated Wake Oscillator Model of Horizontal Flexible Structure Moving in Uniform Flow
Submission Author:
Ekaterina Pavlovskaia , Scotland , United Kingdom
Co-Authors:
Ekaterina Pavlovskaia
Presenter: Ekaterina Pavlovskaia
doi://10.26678/ABCM.DINAME2019.DIN2019-0138
Abstract
In this work, vortex-induced vibrations (or VIV) of a horizontal flexible structure capable of moving in cross-flow and in-line directions are considered using wake oscillator approach. The ongoing study aims to investigate different types of nonlinear damping in fluid oscillators and their role in accuracy of VIV prediction. Van der Pol and Rayleigh damping types were investigated in this project. The Galerkin-type sinusoidal discretization of the flexible beam equations was applied and the obtained system of ordinary differential equation was solved numerically. The proposed models were calibrated with the published experimental data by Sanaati and Kato (2012) and the prediction results were compared. It was observed that the Van der Pol damping was the most suitable to predict the vibrations of the considered horizontal structure.
Keywords
vortex-induced vibration (VIV) flexible structure, uniform flow, wake oscillator, multi-mode approach
