摘要
为了研究三体船航速及不同波陡波浪参数对其波浪中增阻及运动响应的影响,本文首先对三体船在静水中的阻力进行了数值模拟;其次,通过数值模拟计算了三体船在迎浪规则波中总阻力及纵向运动响应,进而得到波浪增阻,并根据试验结果对数值计算结果进行了验证;最后,研究了三体船在短波和长波中波浪增阻和纵向运动响应随波陡变化的非线性特征。研究结果表明,数值计算结果与试验结果吻合较好,三体船在高航速时纵向运动响应剧烈,重叠网格数方法更适合模拟三体船高航速纵向运动。三体船在高航速时运动及增阻的非线性更加明显,波陡变化带来的非线性影响在长波波浪条件下更加明显。
To examine the effect of the trimaran speed and wave parameters with different steepness on the added resistance and motion responses in waves,first,numerical simulations were performed to predict the resistance of a trimaran in calm water.Second,numerical simulations were performed to predict the total resistance and longitudinal motion responses of a trimaran in waves,and then the added resistance was calculated.The numerical results were verified by the available experimental data.Finally,the nonlinear characteristics of added resistance and longitudinal motions varying with wave steepness were investigated in short and long waves at different speeds.The results show that the numerical results have a reasonable agreement with the experimental data and the longitudinal motion responses of a trimaran are intense at high speeds.The nonlinearity of motion and added resistance in waves are more obvious at high speeds,and the nonlinear influence of wave steepness is more obvious under a long-wave condition.
作者
李昂
李云波
LI Ang;LI Yunbo(College of Shipbuilding Engineering,Harbin Engineering University,Harbin 150001,China;College of Ocean Science and Engineering,Shanghai Maritime University,Shanghai 201306,China)
出处
《哈尔滨工程大学学报》
EI
CAS
CSCD
北大核心
2021年第1期34-41,共8页
Journal of Harbin Engineering University
基金
国家自然科学基金项目(51979157)
上海市自然科学基金项目(19ZR1422500).
关键词
三体船
高航速
波浪增阻
纵向运动
波陡
非线性
重叠网格
数值模拟
trimaran
high speed of a ship
added resistance in waves
longitudinal motion
wave steepness
nonlinearity
overset mesh
numerical simulation
