基于ECOMSED模式的兴化湾三维潮流泥沙数值模拟研究

ECOMSED-Based Three-Dimensional Numerical Model for Sediment Transport in Xinghua Bay

通过三维ECOMSED模式,对兴化湾内的泥沙变化规律进行了分析论证。模拟结果与实测值的对比分析表明,模拟结果较好,可以较准确地描述兴化湾的潮流泥沙特征。分析发现,兴化湾大部分海域的含沙量很低,兴化湾内普遍呈现冲淤稳定的状态,海区的冲淤变化量维持在1个较小的水平,淤积主要集中在近岸浅滩区域,近岸年淤积变化量普遍呈增大趋势。

In this paper, the 3-dimensional ECOMSED model is used to simulate the sediment transport in Xinghua Bay, and the model results are compared with the observations. It is learnt that the model gives better results, and the current features and sediment transport can be precisely analyzed. As the analysis shows, the sediment concentration in most of Xinghua Bay area is very low, and shows stable deposition and erosion. The change value of deposition and erosion is very low. Depositions are mainly in shallow coastal areas. Annual deposition changes in the coastal are generally tended to increase.