Vessel/mooring/riser coupled dynamic analysis of a turret-moored FPSO compared with OTRC experiment
Vessel/mooring/riser coupled dynamic analysis of a turret-moored FPSO compared with OTRC experiment
复制标题
DOI：
10.1016/j.oceaneng.2004.12.013
复制
发表时间：
2005-10-01
影响因子：
5
通讯作者：
Ward, EG
中科院分区：
文献类型：
--
作者：
Kim, MH;Koo, B;Ward, EG
针对6000英尺水深转塔系泊油轮FPSO的整体运动仿真，开发了一套船舶/系泊系统/立管耦合动力学时域分析程序。在给定的环境和边界条件下，在组合矩阵中同时求解船舶和线路动力学。在OTRC波浪水池中，针对墨西哥湾100年一遇的非平行风-浪-流飓风条件，对船舶的整体运动和系泊张力进行了测试。利用所开发的耦合动力分析程序对同一情况进行了数值模拟。将数值计算结果与OTRC 1：60模型试验结果进行了比较，OTRC测得的系泊系统刚度、系缆张力、自振周期和阻尼与数值模拟的静力偏置和自由衰减试验结果基本吻合。数值模拟的全球船舶运动也与实测结果吻合较好，强调了在使用截断系泊系统时，系泊动张力可能被低估。(c)2005爱思唯尔有限公司保留所有权利。
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 and line dynamics are solved simultaneously in a combined matrix for the given environmental and boundary conditions. The vessel global motions and mooring tension are tested at the OTRC wave basin for the non-parallel wind-wave-current 100-year hurricane condition in the Gulf of Mexico. The same case is also numerically simulated using the developed coupled dynamic analysis program. 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 reasonably match with numerically simulated static-offset and free-decay tests. The numerically predicted global vessel motions are also in good agreement with the measurements.It is underscored that the dynamic mooring tension can be underestimated when truncated mooring system is used. (c) 2005 Elsevier Ltd. All rights reserved.