## Özet

Fully nonlinear wave interactions with a three-dimensional body in the presence of steady uniform currents are studied using two independent Numerical Wave Tanks (NWT). The potential-NWT simulations are compared with the viscous-NWT simulations. The potential NWT used an indirect Desingularized Boundary Integral Equation Method (DBIEM) and a Mixed Eulerian-Lagrangian (MEL) time marching scheme. The Laplace equation is solved at each time step and the fully nonlinear free surface boundary conditions are integrated with time. A regridding algorithm is devised to eliminate the possible saw-tooth instabilities. The incident waves are generated by a piston-type wavemaker. The outgoing waves are dissipated inside a damping zone by using spatially varying artificial damping on the free surface. The viscous NWT solves a Navier-Stokes (NS) equation by using a finite-difference scheme and a modified marker-and cell (MAC) method in the frame of rectangular-coordinate system. The fully-nonlinear kinematic free-surface condition is satisfied by the density-function technique developed for two fluid layers. Computations are performed for the nonlinear diffractions of steep monochromatic waves by a truncated vertical cylinder with/without uniform currents. The NWT simulations compared favorably with available experimental results.

Orijinal dil | İngilizce |
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Sayfalar | 84-95 |

Sayfa sayısı | 12 |

Yayın durumu | Yayınlandı - 1998 |

Harici olarak yayınlandı | Evet |

Etkinlik | Proceedings of the 1998 International OTRC Symposium - Houston, TX, USA Süre: 30 Nis 1998 → 1 May 1998 |

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???event.eventtypes.event.conference??? | Proceedings of the 1998 International OTRC Symposium |
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Şehir | Houston, TX, USA |

Periyot | 30/04/98 → 1/05/98 |