航速对大型半潜船波浪载荷影响研究

Analysis of the Effect of Speed on Semi-Submersible Vessel’s Wave Loads

基于三维势流理论,采用考虑航速的波浪载荷预报方法,对一艘10万t级半潜运输船在0航速及设计航速下的船体梁波浪弯矩及波浪剪力进行预报,结果表明,设计航速下船体波浪弯矩极值较0航速时增加约9%,波浪剪力极值增加约18%。为10万吨级大型半潜船设计提供参考。

Based on the three-dimensional potential flow theory,the wave load prediction method considering the speed is adopted on a 100-thousand-ton semi-submersible vessel,the wave bending moment and shear force of hull girder are predicted under the conditions of zero speed and design speed respectively.The results show that the maximum value of wave bending moment increased by around 9%and the maximum value of wave shear force increased by around 18%under design speed than that of zero speed.It provides reference for the structure design of hundred-thousand-ton-level large semi-submersible vessel.