平底帆船的波浪干扰力初探

Studies of interference forces of waves on flatbottmed yacht

目的研究波浪对平底帆船的干扰力。方法以小型平底帆船为对象,基于线性切片理论计算一阶规则波浪对船体的干扰力,分析波浪干扰力对帆船运动的影响。结果计算了斜浪时波高对干扰力的影响;遭遇角对干扰力大小、振荡周期的影响;波浪频率对干扰力振荡周期的影响,及斜浪对船体横漂的影响等。结论帆船在波浪中行驶时,遭遇角是影响帆船运动状态的关键因素之一,为保持正确航向应适时修正遭遇角。

Objective To study the interference forces of waves on flat-bottomed yacht. Methods The interference forces from first-order regular waves on fiat-bottomed yacht were simulated and calculated based on linear slice theory and to analyze its influence on the yacht＇s movement. Results The effects of oblique waves on interference forces and the yacht＇s sidelong floating, the influence of the encounter angle （angle between the direction of wave and course） on the interference forces and its cycle, and the effect of wave frequency on the cycle of interference forces were all analyzed. Conclusion The encounter angle was a key factor of effects on the movement of fiat-bottomed yacht. To keep right course, it should be necessary to adjust the encounter angle timely.