论文部分内容阅读
超大型浮式液化天然气船薄膜型液舱内液体晃荡载荷是一个关键问题。采用实验方法研究纵荡、横荡和横摇下储舱内晃荡荷载的分布规律,具体包括冲击载荷的时程分析、最大冲击荷载分布规律和其对应的危险载液率。在室内开展大比尺八边形模型液体晃荡实验,采用阵列式布置压力传感器监测冲击压力的变化及其分布特性。实验结果表明:60%~70%为最危险载液率,液舱外形曲率突变的位置冲击压力较大。研究结果可为液舱结构加强设计及分析提供依据。
Liquid sloshing loads in thin-film tanks of very large floating LNG carriers are a key issue. The distribution law of sloshing load in storage tanks under longitudinal sloshing, sloping and rolling is studied experimentally, including the time history analysis of impact load, the distribution law of maximum impact load and the corresponding dangerous liquid carrier rate. Large-scale octagonal model liquid sloshing experiment was carried out indoors. The array pressure sensor was used to monitor the change of impact pressure and its distribution characteristics. The experimental results show that 60% -70% are the most dangerous liquid-carrying rate, and the impact pressure of the position where the curvature of the tank shape is abrupt is larger. The research results can provide basis for strengthening the design and analysis of tank structure.