孟加拉湾波浪数值模型计算初始参数调整研究  

Initial parameters adjustment of wave numerical model calculation in the Bay of Bengal

作　　者：张万威 赵红军[2,3] 陈国平 严士常[1,2,3] ZHANG Wan-wei;ZHAO Hong-jun;CHEN Guo-ping;YAN Shi-chang(Institute of Water Science and Technology,Hohai University,Nanjing,Jiangsu 210098,China;College of Harbour,Coastal and Offshore Engineering,Hohai University,Nanjing,Jiangsu 210098,China;Key Laboratory of Coastal Disaster and Protection of Ministry of Education,Hohai University,Nanjing,Jiangsu 210098,China)

机构地区：[1]河海大学水科学研究院,江苏南京210098 [2]河海大学港口海岸与近海工程学院,江苏南京210098 [3]海岸灾害及防护教育部重点实验室(河海大学),江苏南京210098

出　　处：《中国港湾建设》2024年第5期1-8,92,共9页China Harbour Engineering

基　　金：国家自然科学基金面上项目(51579091)。

摘　　要：在对孟加拉湾海域进行波浪建模的过程中,SWAN模型初始参数调整的研究显得尤为重要。鉴于该区域波浪特性的复杂性和多变性,利用波浪浮标数据,对SWAN模型在各种初始参数配置下的模拟结果进行了深入评估。研究结果表明,在某些特定条件下,仅仅提升计算分辨率并不能显著增强模型的模拟精度;因此,选择合适的分辨率对于确保计算效率与模拟精度之间的平衡显得至关重要。特别是在对BD08、BD11和BD14三个浮标的数据进行分析时发现,当模型设置为10 min时间步长和最大迭代次数为1时,波高模拟展现出了高度稳定性和准确性。因此,建议在模拟过程中采用较短的时间步长并减少迭代次数,尤其是在水深变化剧烈和近岸地区,以提高模型的模拟精度和效率。对SWAN模型初始参数进行细致的调整,对于提高模型在不同地区的模拟精度和效率是至关重要的。In the process of wave modeling in the Bay of Bengal,it is particularly important to study the initial parameter adjustment of the SWAN model.Given the complexity and variability of wave characteristics in the region,an in-depth evaluation of the simulation results of the SWAN model under various initial parameter configurations was conducted by using wave buoy data.The research results show that under certain specific conditions,merely increasing the computational resolution cannot significantly enhance the accuracy of the model's simulation;therefore,choosing the appropriate resolution is crucial to ensure the balance between computational efficiency and simulation accuracy.Especially when analyzing the data from the BD08,BD11,and BD14 buoys,it was found that when the model is set to a 10-minute time step and a maximum iteration number of 1,the wave height simulation showed a high degree of stability and accuracy.Therefore,it is recommended to use shorter time steps and reduce the number of iterations during the simulation process,especially in areas with dramatic changes in water depth and nearshore areas,to improve the accuracy and efficiency of the model's simulation.Meticulous adjustment of the SWAN model's initial parameters is crucial for improving the simulation accuracy and efficiency of the model in different regions.

关 键 词：计算初始参数 调整研究 SWAN 孟加拉湾 

分 类 号：U652.3[交通运输工程—港口、海岸及近海工程] P731.22[交通运输工程—船舶与海洋工程]