Second-order horizontal steady forces and moment on a floating body with small forward speed

被引:33
|
作者
Aranha, JAP
机构
[1] Department of Naval Engineering, USP, São Paulo
关键词
D O I
10.1017/S002211209600211X
中图分类号
O3 [力学];
学科分类号
08 ; 0801 ;
摘要
In a recent work, a simple formula was derived for the 'wave drift damping' in a two-dimensional floating body and the obtained expression is exact within the context of the related theory, where only leading-order terms in the forward speed are retained. This formula is now generalized for a three-dimensional problem and the coefficients of the 'wave drift damping matrix' are given explicitly in terms of the standard second-order steady forces and moment in the horizontal plane; Munk's yaw moment, related with the steady second-order potential and discussed in Grue & Palm (1993), is not analysed in this paper and the effect of an eventual small angular velocity around the vertical axis is also not considered. Numerical results agree in general with the proposed formula although in a specific case a consistent disagreement has been observed, as discussed in 5.
引用
收藏
页码:39 / 54
页数:16
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