| 受潮汐影响的河道水面线数值分析 |
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| 引用本文： | 崔莉,孟繁春.受潮汐影响的河道水面线数值分析[J].大连理工大学学报,1991,31(2):213-221. |
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| 作者姓名： | 崔莉 孟繁春 |
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| 作者单位： | 大连理工大学土木工程系
(崔莉)，辽宁省水利水电勘测设计院(孟繁春) |
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| 摘 要： | 本文采用四点加权隐式差分格式应用牛顿－拉普逊迭代法，计算了受潮汐影响的 河道的洪水过程．计算中提出了断面概化面积与实际断面积相等的原则；并对差分格 式中的加权系数ａ值进行优化，得出ａ在（０．５，０．７）内耿值收敛快、精度高、稳 定性好，而且对时间步长的选择要求可以放松，节省了计算时间，计算结果与原型观测资料相吻合．
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| 关 键 词： | 潮汐 河道 水面线 断面概化 |
Numerical analysis of river flow profile affected by tide fluctuation |
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| Cui Li Mong Fanchun.Numerical analysis of river flow profile affected by tide fluctuation[J].Journal of Dalian University of Technology,1991,31(2):213-221. |
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| Authors: | Cui Li Mong Fanchun |
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| Abstract: | A Finite Difference Method with four points weighted implicit scheme and Newton-Raphson iteration method are introduced to complete the flood routing in the tidal river. The problems related to normalization of cross-sectional area and optimization of weighting factor a are discussed and a = 0.5-0.7 is suggested. With such a a,high accuracy,stable and convergence results and flexible time step will be expected. The computational example of a tidal river in Liaoning Province shows the good agreement with the measuring data on prototype. |
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| Keywords: | tides unsteady flow weighted factor/normalization of cross-sectional area |
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