摘要
为评估船舶所受风载荷并进行船舶安全性预报,以某散货船为研究对象建立船舶三维模型,采用数值模拟计算方法进行研究。借助有限元分析软件WorkBench建立合理的风场计算域,进行网格划分、边界条件设置,湍流模型采用Standard k-ε模型,利用MATLAB编程结合谐波叠加法设置参数生成随机脉动风,提出了脉动风作用下船舶风载荷数值仿真方法,入口边界条件采用脉动风进行船舶风载荷仿真,相比平均风更贴近海洋真实风场环境。计算脉动风作用下不同风向角的风载荷并进行对比分析,结果表明,不同风向角的船舶风载荷力是不同的。通过不同时刻的船体及流场脉动风压分布情况进行对比分析得到船舶脉动风载荷分布特性。船舶脉动风载荷仿真方法可为相似船型船舶的风载荷预报提供参考。
In order to evaluate the wind load on the ship and predict the safety of the ship,a three-dimensional model of the ship is established with a bulk carrier as the research object.The numerical simulation calculation method is used,and the finite element analysis software WorkBench is used to establish a reasonable wind field calculation domain for grid division and boundary condition setting.The turbulence model adopts the Standard k-εmodel,and MATLAB programming combined with harmonic superposition method is used to set parameters to generate random fluctuating wind.A numerical simulation method of ship wind load under fluctuating wind is proposed.The fluctuating wind is used to simulate the ship wind load at the inlet boundary condition,which is closer to the real ocean wind field environment than the average wind.The wind loads at different wind angles under the action of fluctuating wind are calculated and compared.The results show that the force of wind load on the ship is different under different wind angles.The distribution characteristics of ship fluctuating wind load are obtained by comparing and analyzing the fluctuating wind pressure distribution of ship hull and flow field at different times.The simulation method of fluctuating wind load on ships can provide reference for the prediction of wind load on similar ships.
作者
翟露阳
韩佳颖
沈永利
ZHAI Luyang;HAN Jiaying;SHEN Yongli(Maritime College,Tianjin University of Technology,Tianjin 300384,China)
出处
《天津理工大学学报》
2024年第3期17-23,共7页
Journal of Tianjin University of Technology
基金
天津市自然科学基金(19JCYBJC23700)。
关键词
船舶风载荷
脉动风
数值模拟
流体力学
wind load on ships
fluctuating wind
numerical simulation
fluid mechanics
