| 复式河道一维洪水演进数值模拟 |
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| 引用本文： | 张防修,王艳平,韩龙喜,张晓丽,吴英海. 复式河道一维洪水演进数值模拟[J]. 水利水电科技进展, 2008, 28(5): 6-9. DOI: 10.3880/j.issn.1006-7647.2008.05.002 |
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| 作者姓名： | 张防修 王艳平 韩龙喜 张晓丽 吴英海 |
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| 作者单位： | 河海大学环境科学与工程学院,江苏,南京,210098;黄河水利科学研究院,河南,郑州,450003;黄河水利科学研究院,河南,郑州,450003;河海大学环境科学与工程学院,江苏,南京,210098;国家环境保护总局华南环境科学研究所,广东,广州,510655 |
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| 基金项目： | 国家科技支撑计划重点项目，国家自然科学基金委员会-水利部黄河水利委员会联合资助项目，水利部黄河泥沙重点实验室开放基金 |
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| 摘 要： | 针对复式河道的特点,建立复式河道一维非恒定流数学模型,采用四点线性隐格式离散圣维南方程组,在动量方程中通过对主槽宽度进行修正,很好地解决了漫滩瞬间流量波动问题。通过2006年汛期调水调沙期间的实测资料对黄河下游白鹤—孙口河段洪水演进过程进行验证,结果表明,计算的洪峰变化过程比较符合实测情况,洪水传播时间的计算值与实测值基本吻合。
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| 关 键 词： | 复式河道 洪水演进 行洪宽度 数值模拟 |
| 修稿时间： | 2008-10-15 |
Numerical simulation of one-dimensional flood routing for a compouna channel |
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| ZHANG Fang-xiu,WANG Yan-ping,HAN Long-xi,ZHANG Xiao-li,WU Ying-hai. Numerical simulation of one-dimensional flood routing for a compouna channel[J]. Advances in Science and Technology of Water Resources, 2008, 28(5): 6-9. DOI: 10.3880/j.issn.1006-7647.2008.05.002 |
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| Authors: | ZHANG Fang-xiu WANG Yan-ping HAN Long-xi ZHANG Xiao-li WU Ying-hai |
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| Abstract: | A one-dimensional unsteady numerical model for a compound channel is established,and the Saint-Venant equations are discretized by use of the Preissmann weighted implicit four-point scheme.In the momentum equation,the width of the main channel is modified in order to avoid flow fluctuation at floodplain sites.On the basis of observed sediment-runoff regulation data in 2006,this model was verified by flood routing along the Baihe and Sunkou reach of the lower Yellow River.It is shown that the calculated peak stage hydrograph and the time of propagation of the flood peak accord well with those of the observed flood.compound channel;flood routing;width of flood discharge;numerical simulation |
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| Keywords: | compound channel flood routing width of flood discharge numerical simulation |
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