Naslov
Validation and Verification of Decomposition Model Based on Embedded Free Surface Method for Oblique Wave Seakeeping Simulations

Autori
Vukčević, Vuko ; Jasak, Hrvoje

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Proceedings of the Tokyo 2015: A Workshop on CFD in Ship Hydrodynamics / - Tokyo, 2015

Skup
Tokyo 2015: A Workshop on CFD in Ship Hydrodynamics

Mjesto i datum
Tokyo, Japan, 02.12.2015. - 04.12.2015

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Podatak o recenziji nije dostupan

Ključne riječi
Free surface flow ; Seakeeping ; CFD ; OpenFOAM

Sažetak
In this paper validation and verification of a KCS model in oblique seas is presented for five headings. Validation is performed by comparing added resistance, heave, roll and pitch motions with experimental data. For each test case, grid refinement study is carried out and the corresponding grid uncertainty is calculated. Periodic uncertainty using moving window FFT is calculated. The decomposition model is based on SWENSE (Spectral Wave Explicit Navier--Stokes Equations) method and implicit relaxation zones, with embedded free surface approach via implicit interface-- corrected interpolation schemes. The method provides one--cell-- sharp jump of dynamic pressure and density across the free surface for arbitrary polyhedral grids. Implicitly redistanced Level Set equation is used for interface capturing, while the k-omega SST model is used for turbulence. The method is implemented in the Naval Hydro pack, based on foam--extend, a fork of the open source software OpenFOAM.

Izvorni jezik
Engleski

Znanstvena područja
Brodogradnja, Strojarstvo

POVEZANOST RADA