URANSE simulation for the Seakeeping of the KVLCC2 Ship Model in Short and Long Regular Head Waves

7th Modern Technologies in Industrial Engineering

工业技术（总论）

Bekhit, A.^1 ; Lungu, A.^1

Dunarea de Jos University of Galati, Faculty of Naval Architecture, 47 Domneasca Street, Galati

800008, Romania^1

关键词: Added resistances;    Air water interfaces;    Commercial software;    Grid convergence;    Numerical solution;    Richardson extrapolation;    Unstructured grid;    Volume of fluid method;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/591/1/012102/pdf
DOI  :  10.1088/1757-899X/591/1/012102

学科分类：工业工程学

来源: IOP

【 摘 要 】

In the present study, the vertical motions and the added resistance in waves of the KVLCC2 ship model are predicted numerically in regular head wave, for a single wave height and different wave lengths, including long and short waves. The numerical simulation is performed by making use of the ISIS-CFD solver of the commercial software FineTM/Marine provided by NUMECA, where the discretization in space is based on finite volume method using unstructured grid. The unsteady RANSE are numerically solved, while the turbulence is modelled by making use of the k-ω SST model. The free-surface is captured through an air-water interface based on the Volume of Fluid method. For validation purposes, the computed solutions are compared with the available tank test data existing in the public domain. A systematic grid convergence study based on Richardson Extrapolation method is performed for a single wave case on three different grid resolutions, as an attempt of predicting the uncertainties in the numerical solution. A thorough investigation for the free-surface topology at different encountering moments is also presented to prove not only the accuracy of the solver, but also its robustness.