| 闫宝伟,于雨,郭生练,潘增.离散广义Nash汇流模型及其在河道洪水演算中的应用[J].水利学报,2017,48(7):773-778 |
| 离散广义Nash汇流模型及其在河道洪水演算中的应用 |
| The discrete generalized Nash Model and its application in the river flood routing |
| 投稿时间：2016-09-17 |
| DOI：10.13243/j.cnki.slxb.20160982 |
| 中文关键词: 广义Nash汇流理论 离散方程 河道洪水演算 滞蓄流量 线性组合 |
| 英文关键词: generalized Nash flow routing theory discretization equations river flood routing detention stor-age flow linear combination |
| 基金项目:国家重点研发计划项目（2016YFC0402708）；中央高校基本科研业务费项目（HUST：2015QN216） |
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| 中文摘要: |
| 基于广义Nash汇流理论，通过定义S曲线或滞蓄曲线，简化了广义Nash汇流计算公式，并推导得出了离散广义Nash汇流模型，将河道下断面出流过程表述为时段初、末入流量与当前时刻及之前若干时刻出流量的线性组合，权重系数由S曲线或滞蓄曲线得出。该模型物理概念明确，又有一定统计意义，结构简单，形式直观，便于在实际中推广应用，最后通过实例分析检验了模型的预报能力。 |
| 英文摘要: |
| Based on the generalized Nash flow routing theory,the calculation formula was simplified by the definition of S-curve or detention storage curve. The discrete generalized Nash model (DGNM) for river flow routing was derived. The outflow downstream can be expressed by a linear combination of the inflows at the beginning and end of the current time, and the outflows of the current time and several times be-fore. The weight coefficients of the linear combination were obtained by the defined S-curve or detention storage curve. The DGNM,with a clear physical concept,also has a statistical significance. Its structure is very simple and its form is more intuitive, which facilitates its popularization and application in practice. The case study also suggested that the DGNM has a good forecasting ability. |
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