波浪入射角度和周期对系泊船舶运动影响的数值模拟研究

基于MIKE 21 Mooring Analysis系泊分析软件,模拟研究在不同周期和入射角度的不规则波作用下系泊船舶运动的变化规律。结果表明,系泊船舶运动量随波浪入射角度和波浪周期的变化相互影响。在不同周期波浪作用下的系泊船横移、横摇和升沉运动量均随波浪入射角度的增大而增大,横摇运动的共振效果随着波浪入射角度远离90°方向逐渐减弱,升沉运动量在波浪入射角度靠近90°或0°方向时基本不变。当入射波浪周期较长时,纵移和回转运动量随着波浪入射角度的增大先增大后减小,一般在波浪60°入射时产生峰值。

Numerical simulation for motion of moored ship under influence of wave incidence angle and period

Based on MIKE 21 Mooring Analysis software,we study the motion of moored ships subjected to irregular waves with different periods and incident angles.The results show that the variations of motion of the moored ship interact with each other for different wave incident angles and periods.Sway,roll and heave motions of the moored ship increase with the increase of the wave incident angle,and the effect of the roll resonance decreases with the wave incident angle away from the direction of 90°,the heave motion change little when the wave incident angle is close to the direction of 90°or 0°.When the incident wave period is long,the surge motion and yaw motion first increase and then decrease with the increase of the wave incident angle,and generally have a peak value when the wave incident angle is 60°.