远洋救助船横摇运动响应极值预报研究
Study on Extreme Value Prediction of Rolling Motion Response of Ocean Rescue Ship
张家兴 1柴威 1刘在良 2齐健璋 1杨霄楠1
作者信息
- 1. 武汉理工大学船海与能源动力工程学院 武汉 430063
- 2. 武汉理工大学船海与能源动力工程学院 武汉 430063;浙江国际海运职业技术学院海洋装备工程学院 舟山 316021
- 折叠
摘要
本文采用AQWA软件对远洋救助船的母型船进行耐波性计算,利用Gumbel方法对危险海况下船舶以设计航速航行时的横摇运动响应进行极值预报.基于势流理论进行频域计算,得到船舶六自由度运动响应幅值算子(RAO),确定设计航速下的危险浪向.通过时域方法模拟船舶横摇运动,得到船舶在危险浪向下的横摇运动响应时程.采用Gumbel方法对横摇运动响应进行极值预报,评估不同海况下船舶的航行安全性.结果表明:本文提出的预报方法具有较高的精度.
Abstract
The seakeeping of the mother ship of the ocean rescue ship was calculated by AQWA soft-ware,and the rolling motion response of the ship sailing at the design speed in dangerous sea condi-tions was predicted by Gumbel method.Based on the potential flow theory,the frequency domain cal-culation was carried out,and the amplitude operator(RAO)of the ship's six-degree-of-freedom mo-tion response was obtained to determine the dangerous wave direction at the design speed.The ship rolling motion was simulated by time domain method,and the response time history of ship rolling motion under dangerous waves was obtained.Gumbel method was used to predict the extreme value of rolling motion response and evaluate the navigation safety of ships under different sea conditions.The results show that the prediction method proposed in this paper has high accuracy.
关键词
远洋救助船/耐波性/极值预报/横摇运动Key words
ocean going rescue vessel/seakeeping/extreme value prediction/roll motion引用本文复制引用
基金项目
国家自然科学基金(52201379)
中央高校基本科研业务费专项资金(3120623001)
出版年
2024
NETL
NSTL
万方数据