水库二维水流泥沙数学模型及应用

Two Dimensional Sediment Mathematical Model and Application in Baisha Reservoir

建立水库坝区平面二维水流泥沙数学模型，考虑了悬移质非均匀、非饱和输沙特性，采用正交曲线坐标拟合复杂边界、ＳＩＭＰＬＥＣ程式离散求解及动边界技术．用该模型对白沙水库流场和河床变形进行了数值验证，计算了典型年条件下，水库取水口附近流场和河床局部形态．结果表明坝前取水口漏斗基本保持稳定状态．

A two dimensional sediment mathematical model for Baisha reservoir is established in the paper.The nonequilibrium transport of nonuniform suspended load is considered.In order to consider the irregularity of reservoir boundary,the body fitted coordinates are adopted.The control volume method(SIMPLEC) and mobile boundary techniques are used in solving the equations of water and sediment movement.The velocity field and reservoir bed deformation near the hole of transport tube are computed for three typical hydrological years.It has been shown that the bed level near the transport hole is in a relatively stable state.