波浪漫滩边界对波生流数值计算的影响

发布时间：2018-04-21 03:12

本文选题：波浪漫滩 + 波生流　；参考：《海洋科学进展》2017年02期

【摘要】：波浪漫滩是近岸波浪的小尺度运动,在实际海域的波生流数值计算中通常被忽略。本文基于Boussinesq方程的FUNWAVE模式,分别采用波浪漫滩边界、固壁边界、海绵边界进行Haller波浪港池物理模型实验的数值模拟,比较三种边界计算结果与实验观测数据的误差,检验波浪漫滩边界对波生流数值计算的影响;然后设计了多种周期、波高的波生流数值模拟试验,分析多种波浪入射条件下波浪漫滩边界对近岸波生流数值计算的影响。结果表明,波浪漫滩对邻近区域波生流有明显影响,漫滩边界下的波生流计算结果更接近实验观测值,在近岸波生流数值模型中引入波浪漫滩边界可以提高波生流计算精度。
[Abstract]:Wave floodplain is a small scale motion of near-shore waves, which is usually neglected in the numerical calculation of wave-induced currents in the real sea area. In this paper, based on the FUNWAVE model of Boussinesq equation, the numerical simulation of the physical model experiment of the Haller wave harbor is carried out by using the wave flood boundary, the fixed wall boundary and the sponge boundary, respectively, and the errors between the three boundary calculation results and the experimental observation data are compared. The influence of wave overbank boundary on the numerical calculation of wave-induced current is tested, and the numerical simulation experiment of wave generated current with various periods and heights is designed to analyze the influence of wave overbank boundary on the numerical calculation of wave-generated current in the near shore under various wave incidence conditions. The results show that the wave floodplain has obvious influence on the wave-generated current in the adjacent region, and the calculation results of the wave-induced current at the floodplain boundary are closer to the experimental observation value. The accuracy of the wave-induced current calculation can be improved by introducing the wave-surfacing boundary into the numerical model of the near-shore wave-generated current.
【作者单位】：解放军理工大学气象海洋学院;河海大学海洋学院;
【基金】：国家自然科学基金项目——利用变分同化结合正则化方法对非线性潮汐模式参数化的理论分析与数值研究(41206163);引入波浪漫滩边界的近岸海域悬沙输运数值模式及其应用(41076048) 中央高校基本科研业务费项目——卫星遥感海浪反演岛礁水深的初步模型及可行性评估(2011B06514)
【分类号】：P731.22

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