应用高阶边界元法求解FPSO型采油平台波浪漂移力的研究(英文)  

An Analysis of Mean Wave Drift Forces of FPSO Systems by Higher-order Boundary Element Method

作　　者：王科[1] 张志强[1] 许旺[1] 

机构地区：[1]大连理工大学工业装备结构分析国家重点实验室、工程力学系,辽宁大连116024

出　　处：《船舶力学》2010年第6期587-595,共9页Journal of Ship Mechanics

基　　金：Supported by the Scientific Research Foundation for the Returned Overseas Chinese Scholars,State Education Ministry,2007[24]

摘　　要：波浪平均漂移力是影响FPSO系统系泊、立管安装和卸载的重要外在荷载。文中针对英国北海正投入使用的萨哈林型式FPSO,应用高阶边界单元方法对其二阶水动力特性进行了计算分析,计算中考虑了物体的几何对称性,FPSO系统所受到的纵荡,横荡以及首摇方向的波浪平均漂移力采用近场解法在湿表面上直接进行压力积分获得。与常数单元方法相比,该方法具有很高的精度,特别是对于高频波浪能得到可靠的收敛解。研究表明为了使得FPSO系统在恶劣海况下安全使用,FPSO系统必须始终保持迎浪状态工作。Mean wave drift forces and moments are critical for FPSO systems in mooring,riser installation and offloading.In this paper,higher-order boundary element method （HOBEM） is applied and symmetry is considered to calculate the second order hydrodynamic interactions of Schiehallion type FPSO in NorthSea of England.The surge,sway and yaw mean drift forces on FPSO are computed by near-field method based on direct pressure integration.Comparing to conventional method,current algorithm has high accuracy and can converge steadily even for high frequency waves.It is shown that in order to control FPSO safely under severe sea condition,the FPSO systems should change its weathervaning angle to head sea all the time.

关 键 词：FPSO 波浪平均漂移力 高阶边界元方法 近场解法 

分 类 号：U661.1[交通运输工程—船舶及航道工程] U674.381[交通运输工程—船舶与海洋工程]