【摘要】 本文将土石堰过流场区分为一维恒定变量流场和二维恒定非达西渗流场;应用圣维南方程和福希海默方程建立数学模型,分别用龙格一库塔法和有限元法进行数值计算,然后协调迭代求得整个流场的水力参数(溢流水深与流速;渗透流速与测压管水头等)。算例的结果与实验值吻合。更多还原

【Abstract】 The topping field of an earth-rock dam is divided into one-dim ensional steady spatially varied flow field and two-dimensional Non-Darcy seepage flow field. The Saint-Venant equations and Forchheimer, P. H. equati ons are used to set up the mathmatic model, and the Finite-Element method and Runge-Kutta method are respectively used for numerical calculation, until stable solutions (water depth and velocity overflow; velocity and piezometric head of seepage flow) for the hydraulic parameters of the whole flow field are obtained. The example calculated dagrees closely with the experimental data.更多还原