Cristin-resultat-ID: 1509466
Sist endret: 1. november 2017 04:16
NVI-rapporteringsår: 2017
Resultat
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
2017

Modelling of Hydrodynamic Loads on Aquaculture Net Cages by a Modified Morison Model

Bidragsytere:
  • Pål Takle Bore
  • Jørgen Amdahl og
  • David Kristiansen

Bok

MARINE 2017 Computational Methods in Marine Engineering VII
ISBN:
  • 9788494690983

Utgiver

International Center for Numerical Methods in Engineering (CIMNE)
NVI-nivå 1

Om resultatet

Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Publiseringsår: 2017
Sider: 647 - 662
ISBN:
  • 9788494690983
Open Access

Klassifisering

Fagfelt (NPI)

Fagfelt: Marin og maritim teknologi
- Fagområde: Realfag og teknologi

Finansiering

  • Norges forskningsråd
    Prosjektkode: 223254
  • Norges forskningsråd
    Prosjektkode: 237790

Beskrivelse Beskrivelse

Tittel

Modelling of Hydrodynamic Loads on Aquaculture Net Cages by a Modified Morison Model

Sammendrag

A modified Morison model is presented for calculation of hydrodynamic forces on aquaculture net cages. The model is based on a simple method for conversion of \textit{"screen model force coefficients"} to approximate equivalent directional dependent \textit{Morison coefficients}. The motivation for this is that experimentally obtained force coefficients for net panels are generally presented as screen model force coefficients, while commercial analysis software are often restricted to a Morison model. Based on the screen model force coefficients defined by \textit{Løland's formulas}, the method is implemented in the nonlinear finite element program USFOS. Analyses with the modified Morison model are performed, investigating the viscous forces on a net panel for different inflow angles. The numerical results are benchmarked against Løland's original screen model, showing good agreement for all inflow angles. Comparison with the classical Morison model is made to illustrate the advantage of the proposed method. The model is also applied for calculation of hydrodynamic forces on the net of a real aquaculture structure exposed to a steady current. Again, the results are compared to Løland's original screen model, showing an almost exact reproduction of the global drag force.

Bidragsytere

Pål Takle Bore

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

Jørgen Amdahl

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

David Kristiansen

  • Tilknyttet:
    Forfatter
    ved Sjømatteknologi ved SINTEF Ocean
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Resultatet er en del av Resultatet er en del av

MARINE 2017 Computational Methods in Marine Engineering VII.

Visonneau, Michel; Queutey, Patrick; Le Touzé, David. 2017, International Center for Numerical Methods in Engineering (CIMNE). Vitenskapelig antologi/Konferanseserie
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