系泊Spar平台波浪中耦合运动的数值模拟及模型试验  

Numerical simulation and experimental study on the coupled motion response of a mooring Spar platform in waves

作　　者：韩旭亮[1] 段文洋[1] 马山[1] 许国春[1] 

机构地区：[1]哈尔滨工程大学船舶工程学院,哈尔滨150001

出　　处：《船舶力学》2016年第1期68-76,共9页Journal of Ship Mechanics

基　　金：国家自然科学基金资助项目(51079032);国家自然科学基金资助项目(51109040)

摘　　要：为了研究恶劣环境载荷引起海洋结构物的非线性运动响应,文章基于三维时域格林函数理论,提出了采用时域物面非线性理论方法直接模拟系泊浮体时域耦合分析所需的水动力,建立了系泊浮体波浪中时域耦合运动的数学模型。该方法充分考虑了每时每刻浮体在瞬态波面下湿表面的变化,并计及平均水线面下瞬时空间位置的改变,系统研究了系泊Spar平台波浪中的耦合运动响应及系泊线张力。最后,将数值模拟结果与模型试验结果进行了比较,计算结果令人满意。In order to consider the nonlinear motion response of offshore structure under complicated environmental loads, this paper presents the body nonlinear approach in time domain, based on the three-dimensional transient Green function theory, which was extended and applied to directly simulate the hydrodynamic problem of a mooring floating body in waves. Also the mathematical model of the coupled motion response of a mooring floating body in waves is established in time domain. The effect caused by the wetted surface under the instantaneous wave surface, and by the exact wetted body position under the mean waterline is fully taken into account at each time step. Then it is introduced to systematically investigate the coupled motion response and mooring forces of a mooring Spar platform in waves. Finally, the numerical simulation results are presented and compared with the model test results. Satisfactory agreements are achieved.

关 键 词：时域格林函数 耦合运动 模型试验 非线性水动力 势流理论 

分 类 号：U661.1[交通运输工程—船舶及航道工程]