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本文对Polge等人提出的“相关传递法”作了进一步数学分析,论证了其成立条件和适用范围。考虑波面偏度对谱形的影响,将模拟的靶谱加以改造,建立了“准相关传递法”。在同时考虑波剖面高度分布和谱两个条件下,对偏态海浪过程进行数值模拟。就模拟结果,分析了以Weibull分布拟合波高分布时,其波面偏度对波高分布中两参数的影响。 文中选用1980—1981年在胶州湾观测的波浪资料对“准相关传递法”加以检验和比较。结果表明:就波高分布、波面极大(小)值分布而言,准相关传递法明显优于传统的线性叠加法,比线性叠加法模拟的结果更接近于实测资料。
This article makes a further mathematical analysis of Polge et al.’s “Relevant Transmission Law”, and demonstrates the conditions and scope of its application. Considering the influence of wavefront deviation on the spectrum, the simulated target spectrum was modified to establish “quasi-correlation transfer method”. Under the condition of considering both the wave profile height distribution and the spectrum, the numerical simulation of the skewed wave process is carried out. Based on the simulation results, we analyzed the effect of wavefront deviation on the two parameters in the wave height distribution when fitting the wave height distribution with the Weibull distribution. In this paper, the wave data from 1980 to 1981 in Jiaozhou Bay are used to test and compare the “quasi-correlation transfer method”. The results show that the quasi-correlation transfer method is superior to the traditional linear superposition method in terms of the distribution of wave height and the maximum (small) value of wave surface, which is closer to the measured data than the linear superposition method.