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波群的模拟是与波群有关的数值和物理模型试验的前提。实际的波浪是多向的不规则波,为了在实验水池中模拟多向不规则波群,该文首先根据给定的波要素、群性参数和方向分布参数,给出了多向不规则波群的数值模拟方法,在此基础上利用有限元法求解改进的Boussinesq方程的数值计算模型,建立了数值水池在指定位置模拟所要求群性的多向不规则波的入射波浪边界条件的计算方法。典型算例表明:按照该文建议的方法确定入射波浪边界条件而建立的数值模型,可以在水池指定位置处产生满足给定群性要求的多向不规则波浪。此外,对多向不规则波群的传播进行了数值研究。
Wave group simulation is a prerequisite for numerical and physical model tests related to wave groups. The actual wave is a multi-directional irregular wave. In order to simulate the multi-directional irregular wave group in the experimental pool, the paper firstly gives the multi-directional irregular wave according to the given wave elements, group parameters and direction distribution parameters Based on this, the finite element method is used to solve the numerical model of the improved Boussinesq equation, and the calculation method of the incident wave boundary condition of multi-directional irregular wave with the required population in numerical pool is established. . A typical example shows that a numerical model established according to the proposed method to determine the incident wave boundary conditions can generate multi-directional irregular wave at a given location in the pool to meet the given group sex. In addition, the numerical study of the propagation of multi-directional irregular wave groups is carried out.