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RANS prediction of the KVLCC2 tanker in head waves

Authors
  • Deng, G. B.1
  • Queutey, P.1
  • Visonneau, M.1
  • 1 Ecole Centrale de Nantes, E.M.N, L.M.F-UMR6598, 1, Rue de la Noe, Nantes, France , Nantes (France)
Type
Published Article
Journal
Journal of Hydrodynamics
Publisher
Springer Singapore
Publication Date
Oct 01, 2010
Volume
22
Issue
Suppl 1
Pages
459–464
Identifiers
DOI: 10.1016/S1001-6058(09)60239-0
Source
Springer Nature
Keywords
License
Yellow

Abstract

The present study is devoted to the computation of the KVLCC2 tanker in head wave with free heave and pitch motion. A RANS solver using finite-volume discretization and free-surface capturing approach is employed for the computation. Free ship motion is captured with a mesh deformation approach. Three different wave lengths (0.6Lpp, 1.1Lpp and 1.6Lpp) are computed. We focus on numerical uncertainty estimation in this paper. For each test case, three different meshes and at least three different time steps have been used to access both time and spatial discretization error. Additional computations with different setups aimed at identifying different numerical discretization errors will also be performed. It is demonstrated that special attention needs to be paid to time discretization. To keep the same time accuracy, time step needs to be reduced on fine mesh for such kind of unsteady free-surface computation involving important pitch or roll motion.

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