SPH simulation of ship behaviour in severe water-shipping situations. (1st July 2016)

• Record Type: Journal Article
• Authors: Kawamura, Kouki; Hashimoto, Hirotada; Matsuda, Akihiko; Terada, Daisuke
• Is Part Of: Ocean engineering. Volume 120(2016)
• Page Start: 220
• Page End: 229
• Publication Date: 2016-07-01
• Subjects: Water-shipping -- SPH -- 6DoF motion -- Model experiment -- GPU; Ocean engineering -- Periodicals; Ocean engineering; Periodicals; 620.4162
• DOI: 10.1016/j.oceaneng.2016.04.026
• Languages: English
• ISSNs: 0029-8018

Abstract

Abstract: 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. Highlights: 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.