FPSO时域动态拖航分析

FPSO Time Domain Dynamic Towing Analysis

以某油田弃置退役浮式生产储卸油装置(Floating Production Storage and Offloading,FPSO)为研究目标,采用非线性时域动态分析方法考虑不同环境条件组合影响,对FPSO的拖航进行时域下拖缆张力响应和FPSO艏摇运动响应分析。结果表明,在给定海况下,被拖物FPSO的拖缆最大张力小于设计破断力,其最大艏摇角度接近30°。在分析过程中系统处于稳定状态,没有出现发散现象。出于保守考虑,在分析中假定拖船固定,给出的计算结果偏保守。

Taken a decommissioned Floating Production Storage and Offloading(FPSO)in an oil field as the research target,the towing analysis of the FPSO in time domain is carried out using the method of non-linear time-domain dynamic analysis and considering the combined effects of different environmental conditions.The towline tension response and FPSO yaw motion response are analyzed and studied.The results show that the maximum tension of the towline is less than the designed breaking load and the maximum yaw motion angle of the towed FPSO is close to 30°under the given sea states.In the process of analysis,the system is in a stable state,and there is no numerical divergence.For conservative consideration,the tugboats are assumed to be fixed in the analysis,and the calculated results are conservative.