Abstract
With the quasi-static analysis method, the terminal floating state of a damaged ship is usually evaluated for the risk assessment. But this is not enough since the ship has the possibility to lose its stability during the transient flooding process. Therefore, an enhanced smoothed particle hydrodynamics (SPH) model is applied in this paper to investigate the response of a simplified cabin model under the condition of the transient water flooding. The enhanced SPH model is presented firstly including the governing equations, the diffusive terms, the boundary implementations and then an algorithm regarding the coupling motions of six degrees of freedom (6-DOF) between the structure and the fluid is described. In the numerical results, a non-damaged cabin floating under the rest condition is simulated. It is shown that a stable floating state can be reached and maintained by using the present SPH scheme. After that, three-dimensional (3-D) test cases of the damaged cabin with a hole at different locations are simulated. A series of model tests are also carried out for the validation. Fairly good agreements are achieved between the numerical results and the experimental data. Relevant conclusions are drawn with respect to the mechanism of the responses of the damaged cabin model under water flooding conditions.
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Project supported by the National Natural Science Foundation of China (Grant Nos. U1430236, 51609045).
Biography: Kai Guo (1983-), Male, Ph. D. Candiadte, Engineer
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Guo, K., Sun, Pn., Cao, Xy. et al. A 3-D SPH model for simulating water flooding of a damaged floating structure. J Hydrodyn 29, 831–844 (2017). https://doi.org/10.1016/S1001-6058(16)60795-3
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DOI: https://doi.org/10.1016/S1001-6058(16)60795-3