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Simulation of Added Resistance in High Waves

Simulation of Added Resistance in High Waves

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Del av bok/rapport
Sammendrag
A vessel traveling across the sea experiences waves. The waves produce forces on the vessel resulting in added resistance. The forces are caused by the combination of wave and vessel motion. A variety of methods for prediction of added resistance in waves exists. The complexity and accuracy varies significantly. This paper focuses on numerical solution of the problem when the waves are high compared to the vessel size. The commercial software Star-CCM+ is used to solve the Navier-Stokes equations by use of Reynolds averaging and a VOF model. This implies that all kind of nonlinearities are accounted for. Accurate numerical propagation of a 5th order Stokes wave is achieved. A study on the mesh and time step sensitivity of the added resistance is presented. The numerical results are validated by custom made model test. A numerical comparison of two alternative surge restrictions (constant speed or constant force) shows insignificant differences in results.
Språk
Engelsk
Forfatter(e)
Institusjon(er)
  • DNV GL Group
  • SINTEF Ocean / Skip og havkonstruksjoner
  • Ålesund
År
2015
Publisert i
International Conference on Offshore Mechanics and Arctic Engineering [elektronisk ressurs] : [proceedings]
ISSN
1523-651X
Forlag
ASME Press
Bok
Proceedings ASME 2015 34th International Conference on Ocean, Offshore and Arctic Engineering Volume 11: Prof. Robert F. Beck Honoring Symposium on Marine Hydrodynamics
Hefte nr.
11
ISBN
978-0-7918-5659-8