摘要
为研究转塔式系泊储油轮的动力响应,应用二阶频域摄动理论计算了其在压载状态下的一阶运动响应、二阶运动的响应谱及锚泊线张力谱,并与相应的模型试验结果进行了比较.试验中浪向角为180°,波谱采用PM谱和白噪声谱.理论计算涉及二阶慢荡阻尼,为此进行了模型在规则波上的衰减试验,系泊形式由弹簧系统代替锚泊系统.频域计算中的二阶慢荡阻尼参考弹簧系统在不规则波下试验所得的阻尼值.计算分析以及与实验结果的比较表明,理论结果和相应的试验结果符合较好.弹簧系统在不规则波下的阻尼值可作为频域计算中二阶慢荡阻尼的参考.
In order to analyze the dynamic of a turret moored tanker, a perturbation method was used to predict the RAO and the spectra of motion and mooring line tension under the irregular wave condition. The calculation results were compared with the corresponding test results. In the test, the wave heading is 180°, the wave spectrum are P M spectrum and a spectrum with flat and broad form called white noise. In the theoretical calculation, the slow oscillation damping coefficient of tanker was obtained by a test in irregular waves where the mooring system is substituted by a spring system with the similar stiffness. From the comparison, it was found that the theoretical results conform well to the test results. The second order perturbation method can be used to analyze the dynamic response of a turret moored tanker.
出处
《上海交通大学学报》
EI
CAS
CSCD
北大核心
2000年第1期152-156,共5页
Journal of Shanghai Jiaotong University
基金
国家自然科学基金!(5970 90 0 2 )
关键词
海洋工程
转塔式系泊储油轮
动力分析
ocean engineering
turret moored tanker
dynamic analysis
second order perturbation
