文章摘要
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)
作者单位
闫宝伟 华中科技大学 水电与数字化工程学院, 湖北 武汉 430074 
于雨 华中科技大学 水电与数字化工程学院, 湖北 武汉 430074 
郭生练 武汉大学 水资源与水电工程科学国家重点实验室, 湖北 武汉 430072 
潘增 华中科技大学 水电与数字化工程学院, 湖北 武汉 430074 
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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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