浅水非线性不规则波数值模拟

Numerical Modeling of Nonlinear Irregular Wave in Shallow Water

在洪广文等提出的缓变水深、水位与流场水域中完全频散性的非线性传播数学模型的基础上,建立了非线性不规则波的计算模型。计算不规则波的主要谱参数,分析比较不同模式下不规则波传播变形的规律和差异等,得出数学模型能够较好地模拟出非线性不规则波的传播,适用于工程应用。

The refraction-diffraction mathematical model of irregular wave propagation and analytical algorithms of simulation spectrum parameters are established in this paper, which are based on the nonlinear model in wave propagation on condition of water＇s slowly variable depth, level and status, proposed by Professor Hong Guangwen. Meanwhile, by calculating the frequency spectrum parameters of irregular wave, comparing and analyzing the difference and discipline of irregular wave in different models. Finally the numerical models can simulate nonlinear irregular wave propagation, suitable for engineering application.