摘要
随着船舶尺度的增大,船体结构刚度变得越来越小,这意味着波浪激励频率和船体振动固有频率更加接近。准确地评估船体受到的波浪载荷及运动响应对船舶设计和安全性评估有重要意义。论文基于CFD-FEM耦合方法对一艘集装箱船建立水弹性模型并进行了数值计算。通过结构的升沉、纵摇,以及截面弯矩的数值计算和试验结果的比较,验证了该方法的准确性。与传统的势流水弹性方法相比,基于CFD-FEM方法能够充分考虑流场与结构相互作用过程中的非线性因素。对于一定的波长-船长比,当船体梁的固有频率较低时,波浪载荷的非线性强弱对船体梁垂向弯矩响应有较大的影响。
With the increase of the ship size,stiffness of the hull structure becomes smaller.This means that the frequency of wave excitation is closer to the natural frequency of hull vibration,making hydroelastic responses more significant.In this paper,KRISO’s model experiment of a container ship is calculated based on coupled CFD-FEM method.By comparing the heave,pitch,and vertical bending moment at midship,validity of the numerical method is illustrated.Nonlinear characteristics in the interaction between the flow field and the structural deformation are investigated.At a certain ratio of the wavelength to the ship length,nonlinear strength of the wave load(characterized by the ratio of wave height to the wave length)has great influence on the amplitude of the vertical bending moment on the hull girder.
作者
柳光军
孙哲
李恒
邹丽
郑皓
LIU Guangjun;SUN Zhe;LI Heng;ZOU Li;ZHENG Hao(School of Naval Architecture,Dalian University of Technology,Dalian 116024,China;State Key Laboratory of Deep Sea Mineral Resources Development and Utilization Technology,Changsha Research Institute of Mining and Metallurgy,Changsha 410012,China;School of Naval Architecture,State Key Laboratory of Structural Analysis for Industrial Equipment,Dalian University of Technology,Dalian 116024,China;Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration,Shanghai 200240,China)
出处
《中国造船》
EI
CSCD
北大核心
2022年第1期89-101,共13页
Shipbuilding of China
基金
国家自然科学基金项目(No.51809035)
国家重点研发计划项目(2019YFC0312400)
深海矿产资源开发利用技术国家重点实验室开发课题重点项目(SH-2020-KF-A01)
兴辽人才计划(XLYC1908027)
中央高校基本科研业务费(DUT20TD108,DUT20LAB308)
