舭龙骨设计对船舶粘性横摇阻尼的影响

Effect of Bilge Keel Design on the Viscous Roll Damping of a Ship

根据挪威船级社关于船舶横摇阻尼计算的规定,结合北大西洋波浪环境条件,借助Sesam水动力分析软件对某带有舭龙骨的穿梭油船建立舭龙骨模型,计算分析不同舭龙骨宽度、长度和安装角度下目标船的粘性横摇阻尼和横摇运动幅值。结果表明,舭龙骨宽度对船舶粘性横摇阻尼的影响较大,而舭龙骨长度和安装角度的影响较小。舭龙骨设计时,对舭龙骨的宽度参数应给予重点关注。

According to DNV rules about ship roll damping calculation,the model of a shuttle tanker with bilge keel was established with Sesam software,combined with the north Atlantic wave environment. The viscous roll damping and the roll motion amplitude of the ship were calculated for different bilge keel＇s width,length and installation angle. Analysis results showed that the bilge keel width has more effect on the viscous roll damping than the length and installation angle. For the bilge keel design,the width parameters should pay close attention to.