甬江及口外海域潮流泥沙数值模拟

发布时间：2018-04-12 15:24

本文选题：甬江口 + 余流　；参考：《水运工程》2017年07期

【摘要】：建立了甬江河道及口外海域平面二维潮流泥沙数学模型,对2015年6月半个月的潮流场和悬沙场进行模拟,模拟结果与实测资料吻合良好。计算得到了研究区域洪季的余流场和输沙格局,结果表明:甬江口外余流整体由西北指向东南,河道余流指向下游;除口门局部水域,甬江口外输沙格局基本与余流场一致,悬沙经涨潮流的作用被带入甬江河道,致使河道内近口门处的输沙格局由口门向内;甬江口局部区域输沙格局与余流场存在差异的原因是悬沙输移与潮流运动存在时间上的滞后。
[Abstract]:A two-dimensional tidal current and sediment mathematical model for the Yongjiang River and its offshore waters is established. The tidal current field and suspended battlefield in June 2015 are simulated. The simulation results are in good agreement with the measured data.The residual flow field and sediment transport pattern in the study area during the flood season are calculated. The results show that the residual current outside the Yongjiang Estuary is from northwest to southeast, the residual current of the channel is pointing downstream, and the pattern of sediment transport outside the Yongjiang Estuary is basically consistent with that of the residual current field except in the local waters of the estuary.The action of suspended sediment through rising tidal current is brought into the channel of Yongjiang River, resulting in the pattern of sediment transport from the entrance to the inside of the channel near the entrance;The reason for the difference between the sediment transport pattern and the residual flow field is the lag between suspended sediment transport and tidal current movement.
【作者单位】：河海大学水文水资源与水利工程科学国家重点实验室;河海大学港口海岸与近海工程学院;
【基金】：国家自然科学基金(51620105005)
【分类号】：P731.2;TV148

【参考文献】