关键词: 风电安装船, 首部砰击载荷, 载荷峰值, 计算流体动力学

Abstract: The variation of the slamming load on the bow of a wind power installation ship in China with wave parameters under regular waves of fifth-order Stokes wave is studied based on the computational fluid dynamics (CFD) method. According to the difference of wave height and wave length, three groups of different wave heights and five groups of different wavelengths are designed for analysis with totally fifteen groups of calculation conditions. The slamming loads of sixteen observation points that are set at the bow are calculated for the analysis of the slamming load under different wave parameters. The calculation shows that the higher the wave height, the greater the slamming load at the bow during the operation of the installation vessel. As the wavelength increases, the slamming load firstly increases and then decreases, and the peak of the slamming load reaches the maximum when the wavelength equals the ship length. The blow slamming is mainly caused by the water exit and entry of the ship sailing in waves. The bow of the installation vessel near the waterplane should be strengthened because the observation points closer to the waterplane are subjected to greater slamming loads. This study can provide references for the structural strength design of the wind power installation vessel in the future.

Key words: wind power installation vessel, bow slamming load, load peak, computational fluid dynamics(CFD)