LOCALLY-ADAPTIVE GRID SYSTEM FOR 3D NUMERICAL SIMULATION OF MEANDER MIGRITION

摘要：

This paper presents the formulation of a locally-adaptive grid system using non-orthogonal grid, which can be applied to simulate the lateral migration in channel bends due to bank erosion. A 3D numerical model of flow and sediment transport was used to simulate the lateral migration of channel meander, based on non-equilibrium transport equations in curvilinear coordinate with collocated grid. The governing equations for flow and sediment transport are solved using the finite volume method (FVM) and the SIMPLEC algorithm with momentum interpolation, This model is able to predict the complex fluvial processes in channel bends, and the simulated evolution process of a channel meander agrees well with experiment measurements.

关键词： meandering river lateral migration bank erosion locally-adaptive grid system three-dimensional numerical modelling

作者: Dongdong Jia Xuejun Shao Hong Wang Gang Zhou

作者单位: State Key Laboratory of Hydroscience and Engineering,Tsinghua University, Beijing 100084,China State Key Laboratory of Hydroscience and Engineering Tsinghna University, Beijing 100084,China State Key Laboratory of Hydroscienee and Engineering,Tsinghua University, Beijing 100084,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: 877-882

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）