摘要
为了减轻FPSO船体上LNG罐体内的液体摇晃,可以在罐体内布置一些防波板。目前工程上很难用传统的经验公式来直接计算设备随船舶摇摆时的结构受力状况,而通过CFD仿真技术可以设计出合理的内部结构来控制容器内的流体流动。通过对Mikelis的棱形液舱实验进行模拟,模拟数据和试验数吻合较好,从而说明了方法的可行性。从液面分布云图可以看出,增加防波板后,液面的晃动明显减小,设置的防冲板能够有效抑制着罐体内液体的晃动,并能明显降低液体对罐体的冲击力与极限压强,提高了罐体的安全裕度。
In order to reduce the shaking of the liquid in the LNG tank,some anti-wave plates can be arranged in the tank.At present,it is difficult to use traditional empirical formula to directly calculate the structural stress of the equipment when it is swaying with the ship,but a reasonable internal structure can be designed to control the fluid flow in the vessel through CFD simulation technology.The simulation of the prismatic tank experiment of Mikelis is carried out,and the simulation data agree well with the experimental data,which indicates the feasibility of the method.As can be seen from the cloud map of liquid surface distribution,the sloshing of liquid surface is significantly reduced after the addition of anti-wave plate.The set anti-shock plate can effectively restrain the sloshing of liquid in the tank,and can significantly reduce the impact of liquid on the tank and the ultimate pressure,improving the safety margin of the tank.
作者
任华
REN Hua(Heng'an Pressure Vessel Manufacture Co.,Ltd.Wuxi 214000,China)
出处
《兰州石化职业技术学院学报》
2019年第4期8-12,共5页
Journal of Lanzhou Petrochemical Polytechnic
基金
中海油流花16-2油气田开发工程项目(A112002816)
