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首页> 外文会议>International Symposium on Deepwater Mooring Systems: Deepwater Mooring Systems: Concepts, Design, Analysis, and Materials; 20031002-20031003; Houston,TX; US >Hull/Mooring/Riser Coupled Dynamic Analysis of a Turret -Moored FPSO Compared with OTRC Experiment
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Hull/Mooring/Riser Coupled Dynamic Analysis of a Turret -Moored FPSO Compared with OTRC Experiment

机译：与OTRC实验相比，炮塔式FPSO的船体/系泊/立管耦合动力分析

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摘要

A vessel/mooring/riser coupled dynamic analysis program in time domain is developed for the global motion simulation of a turret-moored, tanker based FPSO designed for 6000-ft water depth. The vessel global motions and mooring tension are simulated for the non-parallel wind-wave-current 100-year hurricane condition in the Gulf of Mexico. The wind and current forces and moments are estimated from the OCIMF empirical data base for the given loading condition. The numerical results are compared with the OTRC 1:60 model-testing results with truncated mooring system. The system's stiffness and line tension as well as natural periods and damping obtained from the OTRC measurement are checked through numerically simulated static-offset and free-decay tests. The global vessel motion simulations in the hurricane condition were conducted by varying lateral and longitudinal hull drag coefficients, different mooring and riser set up, and wind-exposed areas to better understand the sensitivity of the FPSO responses against empirical parameters. It is particularly stressed that the dynamic mooring tension can be greatly underestimated when truncated mooring system is used.
机译：开发了时域中的船舶/系泊/立管耦合动态分析程序，用于针对塔底系泊的，基于油轮的FPSO进行全局运动仿真，该设计的水深为6000英尺。针对墨西哥湾非平行风浪-当前100年飓风条件，模拟了船舶的整体运动和系泊张力。对于给定的负载条件，从OCIMF经验数据库中估算出风，水流的力和力矩。将数值结果与采用截断式系泊系统的OTRC 1:60模型测试结果进行了比较。通过数值模拟的静态偏移和自由衰减测试来检查系统的刚度和线张力以及从OTRC测量获得的自然周期和阻尼。通过改变横向和纵向船体阻力系数，不同的系泊和立管设置以及受风影响的区域，进行了飓风条件下的全球船舶运动模拟，以更好地了解FPSO响应对经验参数的敏感性。特别强调的是，当使用截断式系泊系统时，动态系泊张力可能会大大低估。

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