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.

• 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 ,基本可以满足洪水实时预报要求