Cristin-resultat-ID: 1818929
Sist endret: 16. november 2020, 13:13
NVI-rapporteringsår: 2020
Resultat
Vitenskapelig artikkel
2020

An Experimental and Numerical Study of Added Mass and Damping for Side-by-Side Plates in Oscillating Flow

Bidragsytere:
  • Frøydis Solaas
  • Fredrik Mentzoni
  • Mia Abrahamsen-Prsic og
  • Trygve Kristiansen

Tidsskrift

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

Om resultatet

Vitenskapelig artikkel
Publiseringsår: 2020
Publisert online: 2020
Trykket: 2021
Volum: 143
Hefte: 1
Artikkelnummer: OMAE-19-11

Importkilder

Scopus-ID: 2-s2.0-85088308248

Beskrivelse Beskrivelse

Tittel

An Experimental and Numerical Study of Added Mass and Damping for Side-by-Side Plates in Oscillating Flow

Sammendrag

Forced harmonic oscillations of nine configurations consisting of horizontal side-by-side plate elements are performed experimentally and numerically. The configurations are oscillated in vertical direction and represent generalized mudmats of subsea structures. The tests are performed for Keulegan–Carpenter (KC) numbers relevant for force estimation during lifting operations. Hydrodynamic added mass and damping coefficients are presented. The coefficients are found to be amplitude dependent for all tested configurations. The interaction effects between the plates increase with increasing amplitude and decreasing distance between the plates. For small oscillation amplitudes, compared with the gap between the plates, the plates behave approximately like individual plates. A study of the relation between the damping force and the added mass force for the tested structures illustrates the importance of applying representative damping coefficients in numerical analysis of marine operations. Numerical results are obtained using a potential flow solver (BEM) and a viscous flow solver (CFD). Low-KC added mass coefficients predicted with the BEM are in accordance with the experiments. There is acceptable agreement between the CFD and the experiments. Best agreement is obtained for small KC numbers. As the KC numbers increase, the differences are, in general, larger. This is possibly due to the CFD being based on the two-dimensional laminar flow.

Bidragsytere

Frøydis Solaas

  • Tilknyttet:
    Forfatter
    ved Energi og transport ved SINTEF Ocean

Fredrik Mentzoni

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

Mia Abrahamsen-Prsic

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

Trygve Kristiansen

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