Cristin-resultat-ID: 2079228
Sist endret: 2. januar 2023, 14:12
NVI-rapporteringsår: 2022
Resultat
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
2022

Application of Dipole Damper Panels in Modelling Gap Resonance

Bidragsytere:
  • Babak Ommani
  • Senthuran Ravinthrakumar
  • Trygve Kristiansen
  • Idunn Olimb og
  • Bernt Karsten Lyngvær

Bok

ASME 2022 41st International Conference on Ocean, Offshore and Arctic Engineering Volume 5A: Ocean Engineering
ISBN:
  • 978-0-7918-8589-5

Utgiver

The American Society of Mechanical Engineers (ASME)
NVI-nivå 1

Om resultatet

Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Publiseringsår: 2022
Antall sider: 8
ISBN:
  • 978-0-7918-8589-5

Klassifisering

Fagfelt (NPI)

Fagfelt: Konstruksjonsfag
- Fagområde: Realfag og teknologi

Beskrivelse Beskrivelse

Tittel

Application of Dipole Damper Panels in Modelling Gap Resonance

Sammendrag

Modelling the fluid response in a gap using conventional frequency domain potential flow solvers is a challenge due to its resonance behavior and the importance of viscous effects. Damping panels, or lids, are usually used to represent the main viscous effects, when more direct method of calculation is not applicable due to limitations on time or computation resources. Although, it is known that the main contributor to the damping is the flow separation at the gap inlet, these methods usually relate the magnitude of the effective damping to the vertical fluid velocity at the surface. In the present study, the application of dipole damping surfaces, as introduced in potential flow code WAMIT, is studied for modelling the flow separation effects more consistently. The relative fluid velocity at the inlet is used to model the damping effect of flow separation. Simplified empirical models are proposed to estimate the magnitude of the damping. The experimental study of flow between two side by side barges by Molin et a. 2009 [1] has been selected to evaluate the present modelling approach. The numerical results show good agreement with the measurements while providing a more consistent basis to apply stochastic linearization of the quadratic damping due to flow separation at the gap inlet.

Bidragsytere

Babak Ommani

  • Tilknyttet:
    Forfatter
    ved Energi og transport ved SINTEF Ocean

Senthuran Ravinthrakumar

  • Tilknyttet:
    Forfatter
    ved Skip og havkonstruksjoner ved SINTEF Ocean

Trygve Kristiansen

  • Tilknyttet:
    Forfatter
    ved Institutt for marin teknikk ved Norges teknisk-naturvitenskapelige universitet

Idunn Olimb

  • Tilknyttet:
    Forfatter
    ved Equinor

Bernt Karsten Lyngvær

  • Tilknyttet:
    Forfatter
    ved Equinor
1 - 5 av 5

Resultatet er en del av Resultatet er en del av

ASME 2022 41st International Conference on Ocean, Offshore and Arctic Engineering Volume 5A: Ocean Engineering.

ASME, .. 2022, The American Society of Mechanical Engineers (ASME). Vitenskapelig antologi/Konferanseserie
1 - 1 av 1