水深对FPSB多点系泊系统特性的影响研究
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摘要
针对某服役于南海海域的大型"浮式处理与补给基地"(FPSB),采用准动态方法对其辐射状系泊系统展开多方面研究。采用三维势流理论计算了FPSB的水动力性能,获得系泊定位分析所需的附加质量、势流阻尼、船体慢漂载荷以及船体运动RAO。分析水深对FPSB多点系泊系统定位能力的影响,研究不同水深条件下,船体的偏移和系泊缆张力的特性。计算表明,水深对系泊系统的几何特征、定位性能均产生一定影响;此外,当水深变化引起系泊系统的定位能力减弱而无法达到规范要求时,还给出相关的解决措施,为实际工程操作提供有价值的参考。
The spreading mooring system for the floating process and supply base(FPSB) that operates in the South China Sea are investigated based on a quasi dynamic method.The hydrodynamic performance of the FPSB is calculated by the three-dimensional potential theory to obtain the added mass,potential damping,slow drift loading,and motion response amplitude operator for the mooring positioning analysis.The influence of the water depth on the mooring positioning ability is analyzed from the investigations of hull offset and line tension with different water depth.The results indicate that the water depth has an influence on the geometry and positioning ability of the mooring system to some extent.In addition,this paper provides the relevant solutions for the practical engineering operation when the weakened positioning ability cannot meet the specification requirements due to the variation of water depth.
The spreading mooring system for the floating process and supply base(FPSB) that operates in the South China Sea are investigated based on a quasi dynamic method.The hydrodynamic performance of the FPSB is calculated by the three-dimensional potential theory to obtain the added mass,potential damping,slow drift loading,and motion response amplitude operator for the mooring positioning analysis.The influence of the water depth on the mooring positioning ability is analyzed from the investigations of hull offset and line tension with different water depth.The results indicate that the water depth has an influence on the geometry and positioning ability of the mooring system to some extent.In addition,this paper provides the relevant solutions for the practical engineering operation when the weakened positioning ability cannot meet the specification requirements due to the variation of water depth.
引文
[1]郑律.水深对某典型FPSO及其系泊系统影响研究[J].船舶,2014(4):17-21.
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[3]戴遗山.舰船在波浪中运动的频域与时域势流理论[M].北京:国防工业出版社,1998.
[4]BV.Hydrostar for experts user manual[R].2012.
[5]Bernard Molin.海洋工程水动力学[M].北京:国防工业出版社,2012.
[6]BV.Ariane 7 theoretical manual[R].2007.
[7]刘应中,缪国平.船舶在波浪中的运动理论[M].上海:交通大学出版社,1987.
[8]BV.Quasi-dynamic analysis of mooring systems using ariane software[R].1998.