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潘锦嫦 《大连理工大学学报》1981,(2)
一、基本原理与设备 海浪的模拟通常是通过谱来实现的。设所要求模拟的波谱密度函数为S(ω).ω为圆频率。在某一水深条件下,造波机可视为某一线性系统,其频率响应函数为式中 H──港池内某固定点的波高; V──控制电动机转速的电压。 于是作为输入的电压的谱密度函数应为这里,作为输出的谱密度S(ω),采用目前较通用的单参数Piersun-Moscowitz谱:式中H1/3为有效波高,以米计。 推板式造波机频率响应函数G(ω)(包括从推波板至测点的变形)根据实测结果经用最小二乘法进行曲线拟合,可近似看作抛物线。 利用Longuest-Higgins波浪模型可将X(ω… 相似文献
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Some research work has been done on the long-term joint distribution of one tenth of the large wave heights with average periods. On the basis of research, the conditional probability distribution of average periods to the wave heights are derived, and the range and the mode of average wave period to return wave height can be calculated easily. By the comparison of the results calculated by the method presented with those calculated by the Design Specification of Harbor Engineering of China, the method presented has more advantages than those of the Specification. 相似文献
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