为了实现更能表征真实海浪特征的不规则波群的有效模拟，结合不规则波群理论生成方法，开发基于半混合欧拉-拉格朗日边界元方法的数值波浪水池。首先，分析不同模型参数对数值计算的影响。研究发现，波浪模拟精度随阻尼层长度的增加和时间步长的减小而提高，适当的源点外移距离、源点分布范围和源点数量能兼顾计算精度和稳定性。然后，基于验证的模型参数对单向不规则波群进行模拟，将数值模拟结果和物理试验结果和理论目标值进行对比，验证数值水池对不规则波群模拟的有效性。结果表明，所开发的数值水池能有效模拟不规则波群的生成和传播。

In order to effectively simulate irregular wave groups that better represent the characteristics of real waves, a numerical wave tank based on the semi-mixed Eulerian-Lagrangian algorithm and boundary element method was developed in combination with the theoretical generation method of irregular wave groups. Firstly, the impact of model parameters on numerical solution was analyzed. It was found that the accuracy of wave simulation increased with the increase of damping layer length or the decrease of time step. Appropriate deviation distance, distribution range and number of source points can balance computation accuracy and stability. Then, unidirectional irregular wave groups were simulated based on the verified model parameters. The numerical results were compared with the results of physical test and the theoretical values to validate the performance of numerical tank in simulating irregular wave groups. The results indicated that the developed numerical tank can effectively simulate the generation and propagation of irregular wave groups.