【摘要】 本文以 Saint- Venant方程组为基础 ,用 Newton- Raphson 方法直接求解按Preissmann加权四点隐式格式进行离散所得的非线性代数方程组 ,提出了河网非恒定流的松弛算法。更多还原

【Abstract】 Based on Saint-Venant equations, the nonlinear algebra equations derived by Preissmann weighted implicit four-point scheme, are solved with Newton-Raphson method. A relaxation arithmetic for simulating the unsteady flow in a river network is proposed. The results are well agreed with field data.更多还原