Moving Mathematical Model Of 'YuPeng' Vessel Using CFD Calculating Resistance

The 'YuPeng' vessel of Dalian Maritime University mainly orient the maritime education and development of ship science.The development of marine simulator for'YuPeng'vessel,towards training students to understand the practice,the combination of theory and practice,at the same time to avoid maritime accidents have important engineering application value.This thesis focuses on moving mathematical model of'YuPeng' vessel based on CFD theory calculating resistance,and the main works of this thesis are summarized as follows.Firstly,numerical simulation of ship direct flight and pure yaw motion based on CFD.The resistance of direct flight is fitted by polynomial,and the lateral hydrodynamic coefficient is used to calculate the lateral hydrodynamic derivative.Secondly,based on predecessors' research and the idea of MMG modeling,considering the ship full domain condition,this thesis uses method by Yang Yansheng that applies to constant and low velocity field to calculate maneuverability hull hydrodynamic.Using Assemberg on the FPP four quadrant thrust coefficient regression interpolation estimation formula,'YuPeng' vessel four quadrant thrust coefficient.Thirdly,this thesis estimates wind pressure and force coefficient,and establishes the mathematical model of wind force;approximate box type ship hull,based on micro wave amplitude hypothesis,calculates the wave force and moment,and establishes the mathematical model of wave force and moment;modeling of uniform flow.Finally,this thesis establishes the simulation platform via Visual Studio2013,and carries out simulation experiments of 'YuPeng' vessel in static and interference force condition.Summary:this thesis establishes the four degrees of freedom motion mathematical model in the wave and wind condition.,provides a theoretical basis for manoeuvring and seakeeping motions.This thesis has advantages for the developing marine simulator of'YuPeng' and training officer.