Predicting Vortex Induced-Vibrations Using CFD and Wake Oscillator Models

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Abstract

In this study vortex induced vibrations of slender structures in marine environment are considered. Two different approaches are adopted to analyse the complex fluid-structure interactions. First reduced-order model based on non-linear self-excited oscillator of van der Pol type (so-called wake oscillator model) is used to construct multi modes approximations of the transversal oscillations of the straight flexible beam. Then computational fluid dynamics is used to verify the obtained predictions and to calibrate the wake oscillator model. Entrance to and exit from the lock-in conditions are examined in details.
Original languageEnglish
Title of host publicationProceedings of the XV International Symposium on Dynamic Problems of Mechanics
Place of PublicationBrazil
PublisherABCM
Number of pages8
Publication statusPublished - 2013
EventDINAME 2013 – XV International Symposium on Dynamic Problems of Mechanics - Buzios, Brazil
Duration: 17 Feb 201322 Feb 2013

Conference

ConferenceDINAME 2013 – XV International Symposium on Dynamic Problems of Mechanics
CountryBrazil
CityBuzios
Period17/02/1322/02/13

Keywords

  • VIVs
  • wake oscillator
  • lock in

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    Pavlovskaia, E. E., Postnikov, A., & Wiercigroch, M. (2013). Predicting Vortex Induced-Vibrations Using CFD and Wake Oscillator Models. In Proceedings of the XV International Symposium on Dynamic Problems of Mechanics ABCM.