波生沿岸流的数值模拟研究

发布时间：2018-05-29 23:28

本文选题：沿岸流 + 数值模拟　；参考：《海洋科学进展》2016年04期

【摘要】：采用完全非线性Boussinesq方程建立的FUNWAVE模型进行波生沿岸流数值模拟研究,通过对不同斜坡地形和波浪入射条件下波生流的物理模型实验结果进行比较,验证了该数值模型能较准确地计算沿岸流;通过改变波浪的不同入射条件,对不同入射条件的沿岸流数值模拟得出:当其他条件不变时,仅入射波高增大时,沿岸流的流幅和幅值增大,幅值位置向深水移动;仅增大入射周期时,沿岸流的流幅显著增加,幅值的增加较小;斜坡地形坡度的改变能显著影响波生沿岸流的流幅和幅值,但对沿岸流幅值位置的水深影响不大。采用窄缝法处理动边界时,选择合适的窄缝起始水深对沿岸流的准确计算是十分必要的。
[Abstract]:The numerical simulation of the wave-induced coastal current is carried out by using the FUNWAVE model established by the completely nonlinear Boussinesq equation. The experimental results of the wave-induced currents under different slope topography and wave incidence are compared. It is verified that the numerical model can calculate the coastal current accurately, and by changing the different incident conditions of the wave, the numerical simulation of the coastal current with different incident conditions shows that when the other conditions are invariant, only the incident wave height increases. The amplitudes and amplitudes of the coastal currents increase, and the amplitude positions move to deep water. When the incident period is increased, the amplitude of the coastal currents increases significantly, and the amplitude of the coastal currents increases slightly, and the slope gradient can significantly affect the current amplitudes and amplitudes of the wave-generating coastal currents. However, there is little influence on the water depth of the amplitude position of the coastal current. When the moving boundary is treated by the narrow slit method, it is necessary to select the proper initial water depth of the narrow gap for the accurate calculation of the coastal 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——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专项项目——流和温盐垂向异结构的新型海洋模式研制及其应用(2011B05714)
【分类号】：P731.2

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