摘要
三体船在横浪中航行时会受到较大的横摇力矩并伴随有较明显的横摇运动,影响了航行的安全性和稳定性。论文基于黏流理论使用开源CFD代码OpenFOAM对三体船在横浪中航行时的运动和受力进行数值预报,分析三体船在横浪中的运动和受力特征,探讨波陡和波浪频率对三体船横摇运动稳定性的影响。研究表明,波陡的增大会增大三体船的受力和运动的幅值,导致横摇运动的稳定性降低;波浪频率对三体船横摇运动幅值的影响不大,其影响主要体现在横摇力矩上,高频波中力矩的非线性更强,运动稳定性更差。
A trimaran sailing in beam waves will be subjected to large rolling moment and accompanied by significant rolling motion,which greatly affects its safety and stability.The open sourced CFD code OpenFOAM is applied to predict motion response and force on the trimaran in beam waves.Influence of wave steepness and frequency on the stability of the motion is discussed.It is shown that increase of the wave steepness will increase the amplitude of trimaran’s rolling motion and rolling moment,and results in decreasing stability of rolling motion.Wave frequency has little effect on the amplitude of rolling motion,while its effect is mainly reflected on the rolling moment.The moment in the high-frequency wave is strongly nonlinear and stability of the motion is worse.
作者
李云波
付峥
龚家烨
代焜
李昂
张大鹏
LI Yunbo;FU Zheng;GONG Jiaye;DAI Kun;LI Ang;ZHANG Dapeng(College of Ocean Science and Engineering,Shanghai Maritime University,Shanghai,201306,China;College of Shipping Building Engineering,Harbin Engineering University,Harbin 150001,China)
出处
《中国造船》
EI
CSCD
北大核心
2021年第4期89-100,共12页
Shipbuilding of China
基金
国家自然科学基金资助项目(51979157)
上海市自然科学基金资助项目(19ZR1422500)。
关键词
三体船
横浪
横摇
失稳
CFD
trimaran
beam waves
rolling motion
instability
CFD
