风浪流变化对船舶航行阻力的影响仿真分析

Simulation analysis of the influence of wind wave current variation on ship navigation resistance

为更全面地呈现船舶航行阻力受风浪流影响情况,对风浪流变化对船舶航行阻力的影响展开仿真分析。首先建立船舶航行时的运动坐标系,以该坐标系为准计算当前风压与波浪力。按照当前风压和波浪力数值构建船舶横摇阻力运动数学模型,利用该模型输出船舶受风浪流变化时的航行阻力数值,并将其作为船舶航行阻力三维模型的输入。然后通过确定船舶三维模型位置、制作模型纹理以及整理船舶航行阻力运动数学模型数据的过程,完成船舶航行阻力三维仿真模拟。实验结果表明:该方法可有效仿真船舶航行时受风浪流变化后的船舶偏航状态以及船舶阻力力矩变化情况,呈现的三维仿真画面较为逼真,具有良好的应用效果。

In order to show the influence of wind and wave on ship’s sailing resistance comprehensively,the influence of wind and wave on ship’s sailing resistance is simulated and analyzed.Firstly,the motion coordinate system is established to calculate the current wind pressure and wave force.Based on the current wind pressure and wave force,a mathematical model of ship rolling resistance movement was constructed,and the numerical value of ship sailing resistance under wind,wave and flow was output by the model,which was used as the input of the three-dimensional model of ship sailing resistance.Then,through the process of determining the position of the three-dimensional model,making model texture and sorting out the mathematical model data of the ship’s navigation resistance,the three-dimensional simulation of the ship’s navigation resistance is completed.The experimental results show that the method can effectively simulate the yaw state of the ship and the change of the ship’s resistance moment when the ship is sailing under the change of wind,waves and flow,and the 3d simulation picture is more realistic and has good application effect.