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提出了有限振幅波对复合圆柱绕射波浪力(矩)的一种实用计算方法.在Stokesn阶绕射波速度势已定条件下,用此法可对n+1阶水波所致波浪载荷进行积分形式的工程估算.实算中对慢收敛的无限自由表面积分可采用数学上的渐近方法化简运算;对直立圆柱第2阶波浪力的实算结果与有关实验数据吻合良好.
A practical method of calculating the diffraction force (moment) of the composite circular cylinder by finite amplitude wave is proposed. Under the condition that the velocity of Stokesn order diffracted wave is fixed, this method can be used to estimate the integral form of wave load caused by n + 1 order wave. For the infinite free surface integral of slow convergence, the asymptotic method can be used to simplify the calculation of the infinite free surface. The second-order wave force of the upright cylinder is in good agreement with the experimental data.