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Cristin-resultat-ID:
1631123
Sist endret:
12. desember 2018, 15:31
NVI-rapporteringsår:
2018
Resultat
Vitenskapelig artikkel
2018
3D motion dynamics of axisymmetric bodies falling through water
Hagbart Skage Alsos
og
Odd Magnus Faltinsen
Tidsskrift
Tidsskrift
Ocean Engineering
ISSN 0029-8018
e-ISSN 1873-5258
NVI-nivå 1
Finn i kanalregisteret
Om resultatet
Om resultatet
Vitenskapelig artikkel
Publiseringsår: 2018
Volum: 169
Sider: 442 - 456
Open Access
Lenker
Lenker
original online (doi)
https://doi.org/10.1016/j.oceaneng.2018.08.033
Institusjonsarkiv
hdl.handle.net/11250/2577827
Importkilder
Importkilder
Scopus-ID: 2-s2.0-85054853371
Beskrivelse
Beskrivelse
Engelsk
Tittel
3D motion dynamics of axisymmetric bodies falling through water
Sammendrag
A new simplified method for analysis of 3D motion dynamics of axisymmetric slender bodies falling from air through water is presented. Slender-body theory for potential flow of incompressible water is combined with 2D + t theory to account for viscous cross-flow separation in the submerged phase. The effect of flow separation from the upstream end of a pipe plays an important role. Furthermore, asymmetric vortex shedding triggering important 3D motions is considered. The water impact loads are based on strip theory and empirical slamming coefficients together with added mass and buoyancy loads. The theory is validated by comparing numerical analyses with experimental drop tests of pipes performed by Aanesland (1987). Error analyses of the theoretical method are performed and compared with tests to explore the sensitivity to input variations.
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fullstendig beskrivelse
Bidragsytere
Bidragsytere
Hagbart Skage Alsos
Forfatter
ved Energi og transport ved SINTEF Ocean
Odd Magnus Faltinsen
Forfatter
ved Institutt for marin teknikk ved Norges teknisk-naturvitenskapelige universitet
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