摘要
利用传统方法对受损海事舰船操纵运动粘性水动力进行数值模拟计算,存在水动力导数计算误差大,准确性低的问题。针对上述问题,提出一种基于CFD的受损舰船操纵运动粘性水动力数值模拟计算方法。该方法主要分为6步骤:1)建立水动力数值模拟方程;2)确定方程计算域以及边界条件;3)划分受损船舶的计算网格;4)采用有限体积法离散方程;5)利用SIMPLE算法求取方程解;6)借助Fluent软件来对求得的解进行收敛,降低计算误差。结果表明:与传水动力统数值模拟计算方法相比,利用本方法对受损海事舰船进行10次操纵运动粘性水动力数值模拟计算,水动力导数计算误差减小0.02,平均误差降低5.4%。
The traditional method is used to simulate the viscous hydrodynamics of maneuvering motion of damaged maritime ships.There are some problems in the calculation of hydrodynamic derivatives,such as large errors and low accuracy.To solve the above problems,a numerical simulation method of viscous hydrodynamics for maneuvering motion of damaged warships based on CFD is proposed.The design of the method consists of six steps:first,establishing the hydrodynamic numerical simulation equation;second,determining the computational domain and boundary conditions of the equation;third,dividing the computational grid of the damaged ship;fourth,using the finite volume method to discretize the equation;fifth,using the SIMPLE algorithm to obtain the solution of the equation;sixth,using Fluent software to obtain the solution.Convergence is carried out to reduce the calculation error.The results show that,compared with the numerical simulation method of hydrodynamic transmission system,the numerical simulation of viscous hydrodynamic forces for 10 maneuvering motions of damaged maritime vessels using this method reduces the calculation error of hydrodynamic derivatives by 0.02%and the average error by 5.4%.
作者
段淑娟
DUAN Shu-juan(College of Mathematics and Information Science,Zhengzhou University of Light Industry,Zhengzhou 450002,China)
出处
《舰船科学技术》
北大核心
2019年第4期4-6,共3页
Ship Science and Technology
基金
国家自然科学基金资助项目(11501526)
关键词
受损舰船
操纵运动
粘性水动力
数值模拟
damaged ship
maneuvering motion
viscous hydrodynamic force
numerical simulation
