Simulations and Analysis on the Course of a Ship Motion Based on CFD and DGT with High-order Stoke Wave

An offshore ship suffers from unmatched disturbance caused by sea waves and currents, which may cause ship overturn accidents and need to be studied. In the paper, the Wigley ship model is taken as the research object and a mechanism model of the ship motion is established. CFD(Computational Fluid Dynamics) method and DGT (Dynamic Grid Technology) are used to analyze the course of a ship motion with high-order stoke wave which can replace sine wave as the input wave. The results show that high-order stoke wave is asymmetrically distributed and the ship motion can be studied by using CFD method and DGT based on high-order stoke wave. The simulation provides a foundation on ship motion in six-degree-of-freedom waves and on the ship's resistance study.