基于不同海浪谱船舶极限海况运动统计特征值预报分析  

Prediction analysis of statistical eigenvalues of ship motion based on different wave spectra under rough sea conditions

作　　者：刘东[1] 武裕鑫 孙树政 LIU Dong;WU Yu-xin;SUN Shu-zheng(No.91404 Unit of PLA,Qinhuangdao 066000,China;Yantai Research Institute,Harbin Engineering Unirersity,Yantai 264000,China)

机构地区：[1]中国人民解放军91404部队,河北秦皇岛066000 [2]哈尔滨工程大学烟台研究院,山东烟台264000

出　　处：《舰船科学技术》2024年第9期60-65,共6页Ship Science and Technology

摘　　要：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18kn、24kn、30kn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.

关 键 词：恶劣海况 运动响应 混合波浪 运动预报 

分 类 号：U664[交通运输工程—船舶及航道工程]