A numerical trim methodology study for the Kriso container ship with bulbous bow form variation

Maasch, M. and Shivachev, E. and Day, A. H. and Turan, O.; Kujala, Pentti and Lu, Liangliang, eds. (2018) A numerical trim methodology study for the Kriso container ship with bulbous bow form variation. In: Marine Design XIII. CRC Press, FIN. ISBN 9781138340695

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    Abstract

    The application of Computational Fluid Dynamics (CFD) is the fastest developing area in marine fluid dynamics as an alternative to Experimental Fluid Dynamics (EFD). While EFD employs well-established methods for predicting a ship's performance, CFD is still challenged to reach a reliable level of accuracy in a reasonable amount of time. In the present study, this issue is addressed in the context of trim optimization by exploring the combination of time-inexpensive potential flow simulations with high-fidelity Unsteady Reynolds-averaged Navier-Stokes (URANS) simulations. This approach allowed covering a broad fore body design space by running a large number of potential flow simulations while at the same time important flow effects due to viscous forces were included by running URANS simulations over the full speed range for a small set of simulations. The KCS baseline design results were validated against an experimental towing tank dataset ensuring a valid CFD setup and thus demonstrating its competitiveness to EFD.