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| 近岸波浪作用下污染物运动的数值研究 |
| Numerical study on pollutant motion under water waves in the nearshore zone |
| 投稿时间：2013-06-28 修订日期：2013-07-22 |
| DOI： |
| 中文关键词: 波浪 波生流 污染物 离散系数 非结构化网格 大范围 |
| 英文关键词: wave wave-induced current pollutant dispersion coefficient unstructured meshes large-scale |
| 基金项目:创新研究群体科学基金50921001 |
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| 摘要点击次数: 1691 |
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| 中文摘要: |
| 近岸波浪是影响污染物输移扩散的重要环境水动力因素之一。波浪对污染物输移扩散的影响主要有波浪扰动造成的水体紊动系数的增大和波浪破碎后形成的波生流对污染物输移作用。结合基于波作用守恒方程和光程函数方程的近岸波浪模型、三维水动力模型以及污染物输移扩散模型,对波浪传播过程中污染物离散系数变化以及波浪破碎后形成的波生流中的污染物输移进行了数值模拟。模型基于非结构化网格,可用于大范围波流以及污染物的耦合计算。数值结果和解析值以及实验结果进行了对比,验证了模型的精度和适应性。 |
| 英文摘要: |
| The wave was an important hydrodynamics influence factor on pollutant transport and diffusion. In the process of wave propagation, the water perturbations would make the water turbulence factor increasing, and the wave-induced current by wave breaking would affect pollutant transport. By combining the wave model which based on the wave action balance equation and the eikonal equation, the near-shore current model and pollutant movement model, the change of dispersion coefficient in wave propagation and the transport of pollutants by wave-induced current were simulated. The coupled model was based on unstructured meshes, which was fit to simulate wave coupled with current and pollutant over the large-scale nearshore region. The numerical results were compared with analytical values and the experimental data to verify the accuracy and adaptability of the coupled model. |
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