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首页> 外文期刊>International Journal of Marine Engineering Innovation and Research >Effect of Bilge Keels Position On Roll Motion Performance Of Traditional Wooden Boat
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Effect of Bilge Keels Position On Roll Motion Performance Of Traditional Wooden Boat

机译：舱底龙骨位置对传统木船滚动运动性能的影响

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摘要

The most ship accidents occurred on size between 35GT and 500GT, including traditional wooden boats. The accidents were dominated by capsizing due to bad weather. Therefore the safety of traditional wooden boats needs to be improved. This paper discusses the position of bilge keels and their impact on the roll motion performance of an Indonesian traditional wooden boat. The roll damping is determined by a roll decay test with three different positions of bilge keels, namely 15 degrees, 30 degrees, and 45 degrees. The roll amplitude is determined in the frequency domain by solving the uncoupled nonlinear roll motion equation with an effective wave slope coefficient calculated using the simplified Froude-Krylov assumption of roll exciting moment. The bilge keels position with the angle of 15 degrees reduced the roll amplitude of 18% while the position with an angle of 30 degrees decreases the roll amplitude by 7% of roll amplitude without bilge keels. The bilge keels position with an angle of 45 degrees reduced the roll amplitude by 2% of those without bilge keels. The natural roll period was not significantly affected by the bilge keels position. The bilge keels position with an angle of 15 degrees is the most effective position to reduce the roll amplitude.
机译：船舶大约最大的情况发生在35GT和500GT之间，包括传统木船。由于天气恶劣，事故主要是倾向化的。因此，需要改善传统木船的安全性。本文讨论了舱底龙骨的位置及其对印度尼西亚传统木船滚动运动性能的影响。辊阻尼由卷衰减试验确定，卷衰减试验用三个不同的舱底龙头，即15度，30度和45度。通过使用简化的FRoude-Krylov假设计算卷激励力矩的简化FRoude-Krylov假设，在频域中在频域中测定辊幅幅度。倾斜角度为15度的倾斜龙骨位置减小了18％的辊幅，而具有30度的角度的位置将辊幅降低7％而没有舱底龙骨。角度为45度的倾斜龙骨位置将辊幅减少2％，其中2％没有舱底龙骨。自然卷周期没有受到舱底龙骨位置的显着影响。角度为15度的舱底龙骨位置是降低辊振幅的最有效位置。

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