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Optimization of ships in shallow water with viscous flow computations and surrogate modeling

AuthorsRotteveel, E., Ploeg, A. van der, Hekkenberg, R.
Conference/Journal13th International Symposium on Practical Design of Ships (PRADS), Copenhagen, Denmark
DateSep 4, 2016
Shallow water effects change the flow around a ship significantly which can affect the optimum design of the hull. This paper describes a study into the optimization of the aft ship region for various water depths. The research focuses on variations of the following parameters of a hull form: The athwart ship’s propeller location, the tunnel top curvature, the flat-of-bottom shape in the stern region and the stern bilge radius. All hull form variants are evaluated in 3 different water depths using a viscous flow solver, and a surrogate model is created for each water depth. Pareto plots are used to present the trade-off between the optimization for one or another water depth. Finally, specific hull forms are chosen and the differences in flow behavior among hull forms and water depths are explained.


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