Parametric Study of Two Degree-of-Freedom Vortex-Induced Vibrations of a Cylinder in a Two-Dimensional Flow

  • D. Lucor
  • M.S. Triantafyllou
Part of the IUTAM Bookseries book series (IUTAMBOOK, volume 14)


We derive accurate, continuous response surfaces of two degree-of-freedom vortex- induced vibrations (VIV) of flexibly mounted cylinders, for a wide range of transverse and in-line natural frequencies, to identify the parametric sensitivity of the VIV response. The flow is assumed to be two-dimensional and the Reynolds number equal to 1,000; the structure has the same low damping for the inline and transverse motions, while the transverse and in-line mass ratios are equal. The VIV response is studied within a wide range of the transverse natural frequency around the synchronization region. The variation of the in-line natural frequency is chosen to be larger than for the transverse natural frequency, in order to study multimodal response. The numerical technique uses a stochastic generalized Polynomial Chaos representation coupled to a spectral element based deterministic solver; hence the response is obtained as a continuous function of the parameters.


Two degree-of-freedom motion VIV Surface response Sensitivity analysis 


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Copyright information

© Springer Science+Business Media B.V. 2009

Authors and Affiliations

  • D. Lucor
    • 1
  • M.S. Triantafyllou
    • 2
  1. 1.Institut Jean Le Rond d'Alembert, Unité Mixte CNRS-UPMC 7190Université Pierre et Marie CurieParis CedexFrance
  2. 2.Department of Ocean EngineeringMassachusetts Institute of TechnologyCambridgeUSA

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