基于CFD的船舶斜浪三自由度运动仿真研究  

Simulation research on three DOF motions of ship in oblique waves based on CFD

作　　者：吴明[1] 石爱国[1] 杨波[1] 王骁[1] 王作超[1] 

机构地区：[1]海军大连舰艇学院航海系,辽宁大连116018

出　　处：《计算机应用研究》2013年第7期2233-2235,2240,共4页Application Research of Computers

基　　金：辽宁省博士科研启动基金资助项目(20111037)

摘　　要：针对船舶在斜浪中的多自由度耦合运动问题,建立了三维粘性流耐波性数值波浪水池,采用边界条件造波法生成高精度的斜向规则波,通过同时求解RANS方程和刚体运动学方程,结合网格整体移动方法和滑移网格方法,实现了船舶斜浪航行的垂荡、纵摇及横摇三自由度耦合运动数值模拟。给出了DTMB5512船模斜浪中的垂荡、纵摇及横摇的频率响应函数,与线性切片理论计算结果进行比较,吻合良好。该方法可为船舶斜浪航行的耐波性预报提供一种有效的途径。This paper established a 3D viscous numerical seakeeping wave tank for solving the ship motions with multi-degree of freedom in oblique wave.This method defined the inflow boundary conditions to generate high precision oblique regular waves.To predict the motions of ship in oblique regular waves,it solved the Reynolds averaged navier-stokes（RANS） equations and the kinematics equations of rigid body simultaneity,and used moving grid method together with sliding grid technique during the simulation.On this basis,it carried out a group of simulations and obtained the heave,pitch and roll transfer functions for ship model DTMB5512.The simulation results show good agreement with linear strip theoretical results,which demonstrate the present research can provide an effective way to predict ship’s seakeeping characteristics in oblique waves.

关 键 词：船舶 计算流体力学 数值水池 三自由度运动 斜浪 频率响应函数 

分 类 号：TP241[自动化与计算机技术—检测技术与自动化装置]