船舶在恶劣海况下的运动极值预测对于船舶航行安全性的评估至关重要。现阶段在进行船舶运动极值预测时，常以单峰谱波浪模型为主，而大量的海浪观测资料表明，在海面上纯风浪与涌浪的情况出现较少，大部分以混合浪的形式出现。本文计算某船型在规则波下的运动响应，根据计算结果分别使用ITTC单参数谱波浪，Ochi-Hubble谱不同频率能量的混合波浪，对高海况下船舶运动统计特征值进行预报，比较分析船舶在18 kn、24 kn、30 kn不同浪向角下的升沉、纵摇、横摇运动单幅有义值，探究不同海浪谱在极限海况下对船舶运动幅值的影响，为恶劣海况船舶的安全航行提供参考。
The prediction of extreme ship motions under rough sea conditions is crucial for the assessment of navigation safety. At present, single-peak spectral wave model is often used for predicting extreme values of ship motion, and a large amount of wave observation data indicates that there are few pure wind waves and swell conditions on the sea surface, and most waves appear in the form of mixed waves. In this research, the motion responses of a ship type under regular waves is calculated. According to the calculation results, the ITTC single-parameter wave spectrum and the Ochi-Hubble wave spectrum with different frequency energy are used to predict the statistical eigenvalues of ship motion under rough sea conditions. Meanwhile, the single amplitude significant value of heave, pitch, roll motion under different wave angles and distinct vessel speeds of 18 kn, 24 kn and 30 kn are compared and analyzed. The influence of different wave spectra on the amplitude of ship motion under rough sea conditions is explored, so as to provide reference for safe navigation of ships in rough sea conditions.
2024,46(9): 60-65 收稿日期：2023-09-28
DOI：10.3404/j.issn.1672-7649.2024.09.010
分类号：U664
作者简介：刘东（1978 – ），男，工程师，研究方向为舰船总体性能试验技术
参考文献：
[1] 李积德. 船舶耐波性[M]. 北京: 北京国防工业出版社, 1981.
[2] 李积德, 张恒. 考虑粘性影响的单体复合船型的运动预报[J]. 船舶力学, 2008, 12(2): 180-187.
LI Ji- de, ZHANG Heng. Motion prediction of hybrid monohull considering viscous effect[J]. Journal of Ship Mechanics, 2008, 12(2): 180-187.
[3] 李海波, 温宝贵. 用短峰波理论预报南海浮式生产储油装置运动响应[J]. 中国海上油气, 2007(5): 346-349.
LI Haibo, WEN Baogui.. Predicting movement behavior of Nanhai FPSO by short-crested wave theory[J]. China Offshore Oil and Gas, 2007(5): 346-349.
[4] DINIS M , PIERSON JWJ . On the motions of ships in confused seas[J]. Japanese Journal of Phytopathology, 1953, 57(4): 573-576.
[5] STREKALOV S S, TSYPLOUKHIN V P, MASSEL S T. Structure of sea wave frequency spectrum[M]//Coastal Engineering 1972. 1973: 307-314.
[6] PHILLIPS O M. The equilibrium range in the spectrum of wind-generated waves[J]. Journal of Fluid Mechanics, 1958, 4(4): 426-434.
[7] OCHI M K, HUBBLE E N. Six-Parameter wave spectra[C]// Coastal Engineering , 1976.
[8] 史宪莹, 陈昌平, 郑艳娜, 等. 双峰谱与单峰谱波浪作用下系泊船舶运动对比研究[C]// 第十八届中国海洋(岸)工程学术讨论会, 2017.
[9] 靳丰富. 基于双峰海浪谱的混合浪数值仿真及应用[D]. 武汉:华中科技大学, 2021.
