Cristin-resultat-ID: 1511290
Sist endret: 25. juli 2018, 17:50
NVI-rapporteringsår: 2017
Resultat
Vitenskapelig artikkel
2018

Improved in-line vortex-induced vibrations prediction for combined in-line and cross-flow vortex-induced vibrations responses

Bidragsytere:
  • Decao Yin
  • Elisabeth Passano og
  • Carl Martin Larsen

Tidsskrift

Journal of Offshore Mechanics and Arctic Engineering
ISSN 0892-7219
e-ISSN 1528-896X
NVI-nivå 2

Om resultatet

Vitenskapelig artikkel
Publiseringsår: 2018
Volum: 140
Hefte: 3
Open Access

Importkilder

Scopus-ID: 2-s2.0-85040006441

Beskrivelse Beskrivelse

Tittel

Improved in-line vortex-induced vibrations prediction for combined in-line and cross-flow vortex-induced vibrations responses

Sammendrag

Slender marine structures are subjected to ocean currents, which can cause vortex-induced vibrations (VIV). Accumulated damage due to VIV can shorten the fatigue life of marine structures, so it needs to be considered in the design and operation phase. Semi-empirical VIV prediction tools are based on hydrodynamic coefficients. The hydrodynamic coefficients can either be calculated from experiments on flexible beams by using inverse analysis or theoretical methods, or obtained from forced motion experiments on a circular cylinder. Most of the forced motion experiments apply harmonic motions in either in-line (IL) or crossflow (CF) direction. Combined IL and CF forced motion experiments are also reported. However, measured motions from flexible pipe VIV tests contain higher order harmonic components, which have not yet been extensively studied. This paper presents results from conventional forced motion VIV experiments, but using measured motions taken from a flexible pipe undergoing VIV. The IL excitation coefficients were used by semi-empirical VIV prediction software vivana to perform combined IL and CF VIV calculation. The key IL results are compared with Norwegian Deepwater Programme (NDP) flexible pipe model test results. By using present IL excitation coefficients, the prediction of IL responses for combined IL and CF VIV responses is improved.

Bidragsytere

Decao Yin

  • Tilknyttet:
    Forfatter
    ved Energi og transport ved SINTEF Ocean

Elizabeth Anne Passano

Bidragsyterens navn vises på dette resultatet som Elisabeth Passano
  • Tilknyttet:
    Forfatter
    ved Energi og transport ved SINTEF Ocean

Carl Martin Larsen

  • Tilknyttet:
    Forfatter
    ved Energi og transport ved SINTEF Ocean
  • Tilknyttet:
    Forfatter
    ved Norges teknisk-naturvitenskapelige universitet
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