在随浪、尾斜浪下ONR舰船骑浪横甩直接数值模拟  

Direct numerical simulation on ONR ship surf-riding/broaching in following and oblique waves

作　　者：张宝吉 王吴锐 ZHANG Baoji;WANG Wurui(College of Ocean Science and Engineering,Shanghai Maritime University,Shanghai 201306,China)

机构地区：[1]上海海事大学海洋科学与工程学院,上海201306

出　　处：《上海海事大学学报》2022年第3期97-101,共5页Journal of Shanghai Maritime University

基　　金：工业和信息化部和财政部高技术船舶项目([2012]533)。

摘　　要：为减小由横甩导致的船舶倾覆概率,以四自由度MMG操纵性方程为基础,通过增加艏向角来改变航向,增加横摇角来判断船舶是否倾覆,增加舵角控制方程来模拟舵效下降,对典型横甩现象进行模拟。以ONR舰船为例,在波长船长比为1、波陡为1/15的海况下,进行随浪和尾斜浪下的航行模拟。基于突然改变的理念成功模拟出该船的典型横甩现象,模拟结果与已有实验值基本一致,证实了本文所提出的ONR舰船骑浪横甩直接模拟方法的可靠性。In order to reduce the overturning probability of a ship caused by broaching,based on the four degrees-of-freedom MMG maneuverability equation,the typical broaching phenomena are simulated by increasing the heading angle to change the course,increasing the roll angle to judge whether the ship capsizes,and increasing the rudder angle control equation to simulate the rudder effect decline.Taking an ONR ship as an example,under the sea conditions of wavelength to ship length ratio of 1 and wave steepness of 1/15,the navigation simulation is carried out in the following and oblique waves.Based on the concept of sudden change,the typical broaching phenomenon of the ship is successfully simulated,and simulation results are basically consistent with the existing experimental values,which confirms the reliability of the ONR ship surf-riding/broaching direct simulation method proposed in this paper.

关 键 词：第二代完整稳性 骑浪 横甩 直接数值模拟 ONR舰船 

分 类 号：U661.32[交通运输工程—船舶及航道工程]