Predicting Vortex Induced-Vibrations Using CFD and Wake Oscillator Models

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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

Fingerprint

Computational fluid dynamics
Vortex flow
Fluid structure interaction

Keywords

  • VIVs
  • wake oscillator
  • lock in

Cite this

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 Brazil: ABCM.

Predicting Vortex Induced-Vibrations Using CFD and Wake Oscillator Models. / Pavlovskaia, Ekaterina Evgenievna; Postnikov, Andrey; Wiercigroch, Marian.

Proceedings of the XV International Symposium on Dynamic Problems of Mechanics. Brazil : ABCM, 2013.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Pavlovskaia, EE, 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, Brazil, DINAME 2013 – XV International Symposium on Dynamic Problems of Mechanics, Buzios, Brazil, 17/02/13.
Pavlovskaia EE, Postnikov A, Wiercigroch M. Predicting Vortex Induced-Vibrations Using CFD and Wake Oscillator Models. In Proceedings of the XV International Symposium on Dynamic Problems of Mechanics. Brazil: ABCM. 2013
Pavlovskaia, Ekaterina Evgenievna ; Postnikov, Andrey ; Wiercigroch, Marian. / Predicting Vortex Induced-Vibrations Using CFD and Wake Oscillator Models. Proceedings of the XV International Symposium on Dynamic Problems of Mechanics. Brazil : ABCM, 2013.
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title = "Predicting Vortex Induced-Vibrations Using CFD and Wake Oscillator Models",
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.",
keywords = "VIVs, wake oscillator, lock in",
author = "Pavlovskaia, {Ekaterina Evgenievna} and Andrey Postnikov and Marian Wiercigroch",
note = "This work is supported by the National Subsea Research Institute (NSRI) UK. Authors would like to thank Dr Marko Keber of the University of Aberdeen and Professor Jerzy Warminski of Lublin University of Technology for valuable discussions and helpful advice. The research leading to these results has partially received funding from the European Union Seventh Framework Programme (FP7/2007-2013), FP7 - REGPOT - 2009 - 1, under grant agreement No:245479.",
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N2 - 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.

AB - 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.

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