浮体锚泊系统计算分析  

Computational analysis of moored floating-body

作　　者：肖越[1] 王言英[1] 

机构地区：[1]大连理工大学船舶工程学院,辽宁大连116024

出　　处：《大连理工大学学报》2005年第5期682-686,共5页Journal of Dalian University of Technology

摘　　要：利用数值方法研究了锚泊浮体在风、浪、流联合作用下的运动响应和锚链线张力变化规律.采用的数学模型主要包括三维锚链线静力模型和浮体频域运动模型.在数值计算中,分别采用有限差分法和频域格林函数法求解三维锚链线静力模型和浮体频域运动模型得到锚泊系统的总体刚度和浮体的水动力参数,据此求解锚泊浮体运动方程,得到锚泊浮体的运动响应和锚链线上的张力变化.对一锚泊半潜式海洋平台的实际校核应用证明,本方法可以提供具有工程精度的锚泊性能预报.The motion and tension responses of a moored system due to combined wind-wave-current action are numerically studied. The mathematical model is composed of 3D mooring-line static model and floating-body motion model in frequency domain. In the study, the stiffness of a moored system and the hydrodynamic coefficients of a floating-body are calculated separately by finite difference method （FDM） and the Green function method. Based on coupling the above methods, the response and tension variation of the moored system is analyzed. As a numerical example, a moored semi-submerged platform is adopted. The calculation results show that the method is reliable and feasible for predicting the moored system.

关 键 词：频域法 运动方程 锚泊系统 数值方法 

分 类 号：U662[交通运输工程—船舶及航道工程]