摘要
本文应用破开算子法原理,将平面二维不恒定流基本方程按不同的物理意义破成对流、扩散和传播三个子方程。对对流方程,提出了基于特征线法的迭代解法,对扩散和传播方程,在局部区域内推演出同一形式的带源泊松方程,引入有限分析法求解,同时,利用边界对称点法,对河道二维计算中较困难的不规则边界计算问题作了较好的处理。
A new mathematical model for 2-D flow is formulated with accurate satisfaction of boundary conditions in conjunction with square or any grids,, so that it may also yield accurate results when the domain of computation is in the shape of a strip as occurring in rivers. The basic equations are split into three sets of component equation of which two sets may be transformed to the same form. This model is a part of a model devised for 2-D flows with sediment.
出处
《水利学报》
EI
CSCD
北大核心
1991年第5期8-18,共11页
Journal of Hydraulic Engineering
