DISTRIBUTED WATER BALANCE MODEL IN WATERSHED COUPLING WITH RIVER DYNAMIC FLOW ROUTING METHOD
This paper focuses on the application of the modeling techniques and the numerical method to simulate the flood discharge and the water depth in rivers with floodplains. Both the overland and the river flow are considered and the momentum exchange is taken into consideration.Cubic-spline interpolation technique is used to interpolate between the geographic data of the riverscross-sections containing eleven pairs of X-Y points and to calculate the properties of the river cross-sections and their derivative values. A numerical solution of Saint Venant equations with lateralflow is presented for the river network. Observed data in a part of Arakawa River basin in Kanto area, Japan, are used to validate the program. The simulated values show good and acceptable agreements with the observed ones. The diffusive model is suitable for the hill areas and the steep slopes while the dynamic model is suitable for the river flow with high water depths, the flat areas and the mild slopes. The lateral flow and roughness coefficient have significant effects on the simulated resultes.
Compound channels implicit difference dynamic flow spline interpolation
Ahmed Hassan Norio Tanaka Nobuyuki Tamai
Dept.of Civil and Environmental Eng., Saitama University, Japan Kanazawa Gakuin Univ., Sue-machi 10, Kanazawa-shi, Ishikawa-ken, 920-1392, Japan
国际会议
第16届亚太地区国际水利学大会暨第3届水工水力学国际研讨会(16th IAHR-APD Congress and 3rd Symoposium of IAHR-ISHS)
南京
英文
12-17
2008-10-20（万方平台首次上网日期，不代表论文的发表时间）