蓄滞洪区平面二维干河床洪水演进数值模拟

Flood Routing on Initially Dry Land in Flood Storage and Detention Basins

在地形较复杂的情况下 ,采用常用的处理干河床问题的方法有时会出现水流虚假流动的现象 .本文在洪水干河床演进模拟中提出了“水位平铺”假设进行处理 ,取得了比较好的模拟效果 .模型建立过程中采用有限差分法的逆风格式离散控制方程 ,并用ADI方法求解代数方程组 ,模型计算速度快 ,节约计算内存 。

Due to complex topography condition, there is some difficulty to simulate flood routing on dry land, this paper a ”level tiled” method is proposed, and with which a better simulation result has got. Upwind finite difference and ADI method have been adopted in simulating flood processing, and this method has greatly saved EMS memory and improved computational speed.