珠江河网与河口一、二维水沙嵌套数学模型研究

发布时间：2018-04-24 00:09

本文选题：嵌套数学模型 + 珠江三角洲　；参考：《泥沙研究》2006年06期

【摘要】：利用三级联合解法和“节点含沙量控制法”,建立了珠江三角洲河网区一维非恒定流水沙数学模型,伶仃洋平面二维水沙模型采用了正交曲线坐标下DSI和ADI法。通过虎门、蕉门、洪奇门、横门4个交接面的水位、流量和输沙量等物理量的相互传递,在每一迭代步内进行河网一维与伶仃洋二维水沙模型的嵌套计算。利用2001年2月枯季和2003年7月洪季实测的水文资料进行验证。结果表明,模型计算结果无论在珠江三角洲河网区、交接断面以及伶仃洋区均与实测资料吻合较好,该模型可用来模拟珠江三角洲河网和伶仃洋的水沙运动过程。
[Abstract]:A one-dimensional unsteady flow sediment mathematical model in the Pearl River Delta river network area is established by using the three-level combined solution and the "Node sediment content Control method". The Lingdingyang plane two-dimensional water-sediment model adopts the DSI and ADI methods under orthogonal curvilinear coordinates. Through the transfer of the water level, discharge and sediment transport between the four interfaces of Humen, Jiaomen, Hongqimen and Hengmen, the nesting calculation of one-dimensional and two-dimensional water and sediment models of river network and Lingdingyang is carried out in each generation. The hydrological data of the dry season in February 2001 and the flood season in July 2003 are used to verify the results. The results show that the calculated results of the model are in good agreement with the measured data both in the Pearl River Delta river network area, the junction section and the Lingdingyang area, and the model can be used to simulate the water and sediment movement process of the Pearl River Delta river network and the Lingdingyang river network.
【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水文水资源与水利工程科学国家重点实验室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水文水资源与水利工程科学国家重点实验室
【基金】：国家自然科学基金(50509007)
【分类号】：TV143.4

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