摘要
以Saint-Venant方程组为基础,介绍了按Preissmann加权四点隐式格式进行离散得线性代数方程组的追赶法模型,在汀江上杭河段洪水演算中应用,获得了令人满意的成果。该算法简单明了,易编通用程序,而且计算的舍入误差小和数值稳定性好,可有较好的开发应用前景。
Based on the Saint-Venant equations,the linear algebraic equations which form the chase model are derived by use of Preissmann Weighted Implicit four-point scheme.When ap-plied to the flood routing and forecast on Shanghang Stream of Tingjiang River,the model pro-duces satisfactory results.This method is simple,easy to develop the current program.Mean-while,it has a little computation error with good numerical stability.It will be of nice prospect in this field.
出处
《水文》
CSCD
北大核心
2001年第z1期17-20,共4页
Journal of China Hydrology
关键词
数值模拟
追赶法
边界条件
洪水演算
numerical simulation
chase method
boundary condition
flood routing
