【作者】 孙丽萍； 张伟； 艾尚茂； 王朗；

【Author】 SUN Liping;ZHANG Wei;AI Shangmao;WANG Lang;Deepwater Engineering Research Center,Harbin Engineering University;

【机构】 哈尔滨工程大学深海工程技术研究中心；

【摘要】 针对混合定位中低频状态下平台运动准静态算法与全耦合算法之间平台运动预报性能的差异,本文对混合定位准静态算法编程;对AQWA软件二次开发进行混合定位全耦合计算,并对比分析两种算法的仿真结果。对平台混合定位三自由度运动(纵荡、横荡及艏向)进行MATLAB编程,利用四阶龙格库塔方程即可求出平台的准静态算法的运动时域历程;将二次开发的外部程序导入AWQA软件进行时域分析,得到浮体的全耦合算法的运动时域历程。仿真结果表明:正常作业工况下,两种算法差异不大;极端工况下差异明显,两种算法的平台纵荡、横荡值相差20m左右,极端海况下采用准静态的计算的方法并不能准确的预报浮体的运动。更多还原

【Abstract】 Fully coupled algorithm and quasi-static algorithm of position mooring system has been programmed,and differences in predicting platform motions with low frequency between the two algorithms are investigated.The results of simulation indicate that there is only little difference between the two algorithms under normal working condition,but great difference under extreme condition.There is about 20 m difference between the two algorithms in calculation of surge and sway of the platform.It is concluded that forecasting platform motion quasi-static algorithm is inaccurate under extreme condition.更多还原