适合高、低含沙水流的水沙数学模型软件开发  

Software Development of Water and Sediment Mathematical Model Suitable for Hyper⁃Concentration and Lower⁃Concentration Flow

作　　者：陈雄波 龚钰婷 王俊昀 CHEN Xiongbo;GONG Yuting;WANG Junyun(Yellow River Engineering Consulting Co.,Ltd.,Zhengzhou 450003,China)

机构地区：[1]黄河勘测规划设计研究院有限公司,河南郑州450003

出　　处：《人民黄河》2020年第11期17-21,41,共6页Yellow River

基　　金：国家重点研发计划项目(2017YFC0405506)。

摘　　要：为了改进多泥沙河流数学模型研究中存在的不足,首先,根据流变方程中宾汉剪应力的不同,进行了高、低含沙水流的区分,并论证了对高含沙洪水采用流场与沙场耦合求解的必要性;其次,根据多家挟沙力公式与实测值的对比分析,表明窦国仁公式能同时适合高、低含沙水流情况,并实现了该公式在数模计算中的嵌套;在此基础上,进行了水沙数学模型软件开发,通过方案管理、动态演示将计算结果直观地向用户展示,方便了非泥沙专业人员的使用;最后,以花园口附近黄河河道内实际发生的“96∙8”洪水为例,进行了水流流场计算,检验了软件的适用性。In order to improve the research on the mathematical model of sediment⁃laden river,firstly,according to the difference of Bingham shear stress in the rheological equation,the hyper⁃concentration flow and lower⁃concentration flow were distinguished and the necessity of using the coupling solution of flow field and sand field for the hyper⁃concentration flood was demonstrated.Secondly,according to the compar⁃ison and analysis of several sand⁃carrying force formulas and measured results,the results showed that Dou Guoren’s formula could be suit⁃able for both hyper⁃concentration flow and lower⁃concentration flow at the same time and the nesting of the formula in the mathematical model calculation was realized.On this basis,the software of water and sediment mathematical model was developed and the calculated results were presented to users intuitively through scheme management and dynamic demonstration,which was convenient for non⁃sediment professionals.Finally,taking the actual occurred flood in the channel of the Yellow River near Huayuankou on August 1996 as an example,it calculated the flow field and tested the applicability of the software.

关 键 词：高含沙水流 宾汉剪应力 水沙耦合求解 挟沙力 软件开发 

分 类 号：TV142[水利工程—水力学及河流动力学] TV882.1