摘要
针对畸形波对船舶航行极具威胁,已引发多起海上事故的情况,对舰船遭遇畸形波进行数值模拟研究。采用考虑航速改进的相位调制方法,以DTMB5512船模为目标船,在顶浪航行状态下实现舰船定时、定点遭遇畸形波的数值模拟。研究证实畸形波对舰船的不利影响明显大于一般大风浪航行,在畸形波情况下获取的非线性运动响应(包括纵摇、垂荡、垂荡加速度、压强和瞬时增阻)最大值是一般大风浪情况下的1.5倍以上。
The freak wave is a menace to navigation,and has caused quite a few accidents. The numerical simulation of ship encountering with freak waves by means of CFD is of practical value. The phase modulation with navigation speed is proposed to improve conventional simulation method. The DTMB5512 ship model is chosen as the object of the numerical simulation. The simulation result indicates that the negative effects produced by freak waves are rather significant. The maximum value of nonlinear sea-keeping responses（ including pitch,heave,acceleration of heave,pressure and instantaneous added resistance） are 1. 5 times severer than those in normal rough sea environment.
出处
《中国航海》
CSCD
北大核心
2016年第3期59-62,113,共5页
Navigation of China
基金
总装预研基金(51314030101)
