Cristin-resultat-ID: 2131858
Sist endret: 21. mars 2023, 09:07
Resultat
Poster
2023

Identification of viscous effects and examination of parameters influencing QTFs for a FWT substructure with heave plates

Bidragsytere:
  • Synne Hoggen Nybø

Presentasjon

Navn på arrangementet: ERAA DeepWIND 2023
Sted: Trondheim
Dato fra: 18. januar 2023
Dato til: 20. januar 2023

Arrangør:

Arrangørnavn: SINTEF, NTNU and EERA JP Wind

Om resultatet

Poster
Publiseringsår: 2023

Beskrivelse Beskrivelse

Tittel

Identification of viscous effects and examination of parameters influencing QTFs for a FWT substructure with heave plates

Sammendrag

Floating structures with motion characteristic dependent on viscous- and higher order effects are often not well represented by numerical models based on potential flow codes alone. State of the art potential flow codes, as WAMIT [1], only uses first order hydrodynamic quantities for estimation of mean wave drift force coefficients, and viscous effects are not accounted for. Second order potential flow codes, as WAMIT second order [2] allows for computation of numerical QTFs. Differences between empirical wave drift coefficients and coefficients obtained by potential theory codes are well known and documented. Heave plates are commonly used in the oil- and gas industry, and more recently for substructures for floating wind turbines (FWT), to increase the heave added mass and heave natural period. Additionally, dependent on sea state and type of structure, heave plates increase both viscous damping and wave excitation. This work presents comparison of empirical and numerical hydrodynamic response for a novelty substructure for FWTs. The comparison documents the importance of including viscous effects, quadratic transfer functions and wave-current interaction to fully capture the hydrodynamic response.

Bidragsytere

Synne Hoggen Nybø

  • Tilknyttet:
    Forfatter
    ved Energi og transport ved SINTEF Ocean
1 - 1 av 1