基于水动力模型的船舶航态的模拟仿真  

Hydrodynamic Model Based Simulation of Ship's Navigation State

作　　者：曾芬芳[1] 陈晓军[1] 林剑柠[1] 陈洁[1] 姚煜[1] 

机构地区：[1]华东船舶工业学院,镇江212003

出　　处：《系统仿真学报》2001年第3期376-380,共5页Journal of System Simulation

摘　　要：根据船舶运动动态平衡原理,采用源汇法建立了在不同浪向下船舶横向运动的水动力模型，根据给定的船舶参数，用STF切片法计算了船体的水动力系数和波浪扰动力(矩)，并存入数据库。提出了采用四阶龙格-库塔法求解船舶运动水动力模型的线性微分方程组，以获得船舶随时间变化的各自由度运动幅值。提出并采用了与以往不同的三维模拟仿真方法--虚拟现实技术，创建了天空和海面波浪等三维海洋虚拟场景，实现了具有真实感的、随时间变化的三维船舶航态（横摇、摇艏、横荡）在该场景中的实时动态仿真，取得了良好的效果。In this paper, the landscape orientation hydrodynamic model of a warship under different wave directions has been built with the source-combining method. According to given parameters of a warship, its hydrodynamic coefficients and disturbing moments is calculated with the STF strip method and stored in a database. The four-step Runge-Kutta method is then used to solve a linear differential equation set of the warship's hydrodynamic model to get warship's motion attitudes with the lapse of time. And also a 3D simulation method, the virtual reality technology, is used to create the 3D virtual sea scene with sky and wave so that the 3D real time dynamic simulation of warship's time-related motions (horizontal swing, horizontal sway and head-sway) in this scene is realized and has got very good result.

关 键 词：虚拟现实 水动力模型 船舶航态 模拟仿真 

分 类 号：U661.32[交通运输工程—船舶及航道工程] TP391.9[交通运输工程—船舶与海洋工程]