SPH simulation of ship behaviour in severe water-shipping situations

• Published in: Ocean engineering Vol. 120; pp. 220 - 229
• Main Authors: Kawamura, Kouki, Hashimoto, Hirotada, Matsuda, Akihiko, Terada, Daisuke
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01.07.2016
• Subjects: 6DoF motion; Coupling; Fishing; Freeboard; GPU; Marine; Model experiment; Ocean engineering; Ships; Simulation; SPH; Test procedures; Vessels; Water-shipping; Water-shipping; 6DoF motion; SPH; Model experiment; GPU
• ISSN: 0029-8018; 1873-5258
• DOI: 10.1016/j.oceaneng.2016.04.026

Fishing vessels, having relatively small freeboard, are prone to encounter a water-shipping event in severe sea states. The water impact and accumulated water effects could make fishing vessels be unstable and capsize in the worst-case scenario. Therefore securing the safety of fishing vessels under water-shipping situations is an important subject, but it is not easy to predict the water behaviour in water-shipping situations, where over-topping, water impact, largely deformed free-surface and strong coupling with ship motions appear compositely. In this paper, SPH simulations using GPU are applied to the prediction of 6DoF ship motions in severe water-shipping condition. Then the prediction accuracy of the SPH method is systematically investigated through comparisons with dedicated captive and free motion tests. •We apply an open-source SPH solver of DualSPHysics to the prediction of water-shipping problems.•SPH results are compared with dedicated captive and free motion tests for a simplified ship model.•SPH method well predicts hydrodynamic forces and ship dynamic behaviour in severe water-shipping situations.•SPH simulation using GPU has good potential for ship safety assessment against water-shipping events.