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本文根据特征函数加源分布、内外域拟合的方法,建立了振动水柱港池系统的三维理论模型。计算了气室水面振荡的频率响应函数、不规则波中的统计值,以及系统的最大吸收宽度比。论讨了不同港池长度、不同阻抗规律对气室水面振荡的影响。结果表明,不同阻抗规律对气室水面的振荡有显著影响。与现有结果比较指出,如不考虑阻抗规律的非线性性质,势将低估其性能。
In this paper, a three-dimensional theoretical model of vibrating water column basin system is established according to the method of source function distribution, internal and external domain fitting. The frequency response function of air chamber surface oscillation, the statistical value of irregular wave and the maximum absorption width ratio of the system were calculated. The effects of different harbor length and different impedance laws on water surface oscillation in gas chamber are discussed. The results show that different impedance laws have a significant effect on the water surface oscillation. Compared with the existing results, it is pointed out that the performance will be underestimated without considering the nonlinear nature of the impedance law.