A MATHEMATICAL MODEL FOR THE CHANNEL BED EVOLUTION DURING THE CONSTRUCTION OF DONGJIANG HYDRO-PROJECT

摘要：

On the base of the measuremefit on the prototype river channel, a numerical model is developed to simulate the river bed scour and fill downstream of Dongjiang Hydro-Project in construction. The basic equations of the mathematical model include the 2-D shallow water flow equations, sediment transport equations and river bed evolution equation. The characteristic-based split finite element algorithm is adopted to establish a mathematical model. Unsteady flows with non-linear river bed elevation and drying-wetting bed, transport of bed load and bed evolution can be simulated by the model. The longitudinal water surface, the cross-section velocity distribution, and the quantity and distribution of scour and deposit of the numerical model are compared with the measured data. The agreement between the computed and measured results is satisfactory.

关键词： Scour and fill finite element method unsteady flow bed load suspended load

作者: Yilin Zhou Jing Lu Zhiliang Wang Zaisen Xia

作者单位: College of Water Conservancy and Hydropower Engineering,Hohai University, Nanjing, China

会议类型: 国际会议

会议名称: 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)

会议地点: 南京

会议语种:英文

页码: 969-974

在线出版日期: 2008-10-20（万方平台首次上网日期，不代表论文的发表时间）