Added resistance, heave and pitch for the KVLCC2 tanker using a fully nonlinear unsteady potential flow boundary element method
Journal article, 2021

In this paper, a fully nonlinear unsteady potential flow method is used to predict added resistance, heave and pitch for the KVLCC2 hull in regular head waves at design speed. The method presents a nonlinear decomposition of the velocity potential and the wave field and an adaptive grid refinement. A formulation for the acceleration potential is used to obtain the pressure. To improve computational efficiency, a Barnes-Hut algorithm is introduced. A grid dependency study and a study on the impact of different time steps on the solution are performed. Numerical results have been compared with experimental data for the design speed. A general good agreement is found for added resistance, especially for longer waves. Heave and pitch are properly computed for all wave lengths in the range λ/L =0.4 to 1.4.

Adaptive grid refinement

Acceleration potential

KVLCC2

Fully nonlinear boundary element method

Author

Francesco Coslovich

Chalmers, Mechanics and Maritime Sciences, Marine Technology

Martin Kjellberg

SSPA Sweden AB

Magnus Östberg

Flowtech International AB

Carl-Erik Janson

Chalmers, Mechanics and Maritime Sciences, Marine Technology

Ocean Engineering

0029-8018 (ISSN)

Vol. 229 108935

Subject Categories

Applied Mechanics

Computational Mathematics

Fluid Mechanics and Acoustics

DOI

10.1016/j.oceaneng.2021.108935

More information

Latest update

6/10/2021