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采用特征函数展开和二维格林函数相结合的方法求解底铰等厚度摆式波能转换装置水动力系数及斜向规则波作用下的波浪扰动力矩。二维积分方程中奇异积分项采用复变函数解析法求解,因此同时适用于有限厚度及薄壁底铰摆板的水动力计算。通过与文献及与AQWA软件水动力计算结果的比较,验证程序的正确性。类似于船舶横摇运动,在固有周期附近粘性阻尼对摆式波能转换装置的性能有很大影响。通过在运动方程中添加粘性阻尼项考虑粘性阻尼的作用,并在此基础上给出最佳负载阻尼系数的估算公式,分析波向角和波高对装置最佳转换效率的影响。
The method of combining the eigenfunctions and the two-dimensional Green’s function is used to solve the hydrodynamic coefficients and the wave disturbance moment under the action of oblique regular wave. The singular integral term in the two-dimensional integral equation is solved by the complex variable function method, so it is suitable for the hydrodynamic calculation of finite thickness and thin-walled hinges at the same time. The correctness of the program is verified by comparison with the literature and the hydrodynamic calculation of AQWA software. Similar to the roll motion of a ship, viscous damping near the natural period has a great influence on the performance of the pendulum wave energy conversion device. The effect of viscous damping was considered by adding viscous damping in the equation of motion, and on the basis of this, the formula of estimating the optimal load damping coefficient was given. The influence of wave angle and wave height on the optimal conversion efficiency was analyzed.