普兰店湾水体交换数值模拟研究

发布时间：2018-08-30 14:56

【摘要】：采用不规则三角网格和有限体积方法,建立普兰店湾附近海域的潮流数值模型,在验证良好的潮流数学模型的基础上,以溶解态的保守物质作为示踪剂,对普兰店湾水交换状况进行了数值模拟,将普兰店湾划分成6个区域,针对各区域进行了水交换能力研究。结果表明:普兰店湾内不同区域的地形和地理位置变化较大,水体交换能力平面分布不均匀。在普兰店湾的6个子区域中与湾外的水交换速度最快的为A区(湾口处),连续潮作用10 d后,水体交换率达到45%。水交换速度最慢的为F区,100 d后水体交换速率为14%。普兰店湾内水交换控制机制的区域性差异使得湾内不同区域水交换率相差较大。
[Abstract]:Using irregular triangular mesh and finite volume method, the numerical model of tidal current near Plantan Bay is established. On the basis of verifying the good mathematical model of tidal current, the dissolved conservative substance is used as tracer. The water exchange situation in Plantan Bay was numerically simulated, and the water exchange capacity of each region was studied by dividing Plantan Bay into six regions. The results show that the topography and geographical location of different areas in Plantan Bay vary greatly, and the plane distribution of water exchange capacity is not uniform. The fastest water exchange rate between the six sub-regions of Plantan Bay and outside of the bay is area A (at the mouth of the bay). After 10 days of continuous tidal action, the exchange rate of water reaches 45g. The slowest rate of water exchange was after 100 days in F area, the exchange rate of water was 14. The regional difference of water exchange control mechanism in Plantan Bay makes the water exchange rate of different areas in the Bay quite different.
【作者单位】：国家海洋环境监测中心;天津大学建筑工程学院;大连理工大学海岸和近海工程国家重点实验室;
【基金】：大连理工大学海岸和近海工程国家重点实验室开放基金(LP1402和LP1501) 中国博士后科学基金面上资助项目(2015M581358) 国家海洋局近岸海域生态环境重点实验室开放基金(201309) 国家自然科学基金项目(41376120和51579030)
【分类号】：X55

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