中文摘要：

研究两层流体中Spar平台在内波作用下的运动响应问题。在线性势流理论框架,提出在内波作用下Spar平台运动响应及分段式悬链线系泊张力特性的计算方法。数值分析两层流体内界面位置、入射内波的波长以及系泊索初始预张力对Spar平台运动响应及其系泊索张力特性的影响规律,结果表明内波对Spar平台纵摇运动响应的影响是小的,但对Spar平台纵荡与垂荡运动响应及其系泊索张力的影响是不可忽视的。因此,在Spar平台的设计中,考虑内波的影响是重要的。

英文摘要：

The motion responses of the Spar platform induced by internal waves in a two-layer fluid are considered. A numerical method for computing the motion response and mooring line tension characteristics of the Spar platform induced by internal wawes is presented. The effects of the interface location of the two-layer fluid, the wave lengths of the incident internal waves and the initial forces of the mooring line on the motion response and mooring line tension characteristics of the Spar platform induced by internal waves are numerically analyzed. Numerical resuits show that the effects of the internal waves on the pith motion response of the Spar platform is small, but the surge and heave motion responses, as well as the mooring line tensions of the Spar platform induced by internal waves are considerably important for its application.