Investigation on Motion and Flooding of Damaged Ship in Waves based on SPH method

A B S T R A C T Understanding the dynamic motion and flooding behavior of damaged ships in wave environments is essential for assessing their survivability. This study conducts a numerical investigation using Weakly Compressible Smoothed Particle Hydrodynamics (WCSPH) method to simulate the response of damaged vessels under various regular wave conditions. The analysis begins with the simulation of a damaged cabin subjected to waves, and the numerical results are validated against experimental data to confirm the reliability of SPH framework. Subsequently, the motion and flooding behavior of a damaged International Towing Tank Conference (ITTC) barge—featuring one or two openings—is examined while the barge is freely floating. The investigation is further extended to KVLCC2 model to explore the influence of wave length, wave height, and wave direction on ship response. Detailed analyses focus on heave and roll motions under damage scenarios. The findings demonstrate that SPH method is capable of accurately reproducing both the flooding process and the hydrodynamic responses of damaged ships, offering practical insight for future research and design considerations related to maritime damage assessment.