二维水库水流泥沙数值模拟

根据水库的水沙运动特点及库区地形条件,考虑悬移质和推移质运动,建立了二维水流泥沙数学模型。网格单元用拉普拉斯方程和代数方法生成,模型方程用有限元法离散求解。利用水槽试验资料和水库实测资料进行模型验证和稳定性分析,结果表明：计算的断面流速分布、流场和河床变形与实测结果基本吻合。

Two Dimensional Numerical Simulation of Flow and Sediment Transport in Reservoir

A 2D depth averaged numerical simulationof flow and sedimentation in reservoir using finite element method is presented.The model solves the basic equations on a mesh generated by boundary fitting with Laplace equations and algebraic method.The flow field is solved by quasi Newton method,while the suspended sediment transport,by Euler Largrangian method.The model has been used to predict flow in a laboratory flume,with very good results.The robustness of the model is also demonstrated by numerical study of flow and sediment transport in a reservoir.One limitation in the model is the expensive CPU time required for its microcomputer based application.