| 北江下游流域洪水预报模型 |
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| 引用本文： | 杨静,黄平,钟义龙.北江下游流域洪水预报模型[J].中山大学学报(自然科学版),2002,41(2):96-99. |
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| 作者姓名： | 杨静 黄平 钟义龙 |
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| 作者单位： | 中山大学环境科学系,广东,广州,510275 |
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| 摘 要： | 北江下游流域洪水预报模型干支流采用圣维南方程组的动力模型 ,差分基于Preissmann隐格式 ,用双扫描法求解。该模型考虑下游洪泛区分洪和崩堤两种特殊情况 ,能自然适合水流计算的边界条件 ,处理内边界条件简单 ,无须建立稀疏矩阵求解 ,存储量小 ,预报结果合理
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| 关 键 词： | 北江下游 洪水预报 Preissmann隐格式 双扫描法 洪泛区分洪 崩堤 |
| 文章编号： | 0529-6579(2002)02-0096-04 |
| 修稿时间： | 2001年7月9日 |
Development of Flood Forecasting Model for Beijang River Downstream |
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| YANG Jing,HUANG Ping,ZHONG Yi-long.Development of Flood Forecasting Model for Beijang River Downstream[J].Acta Scientiarum Naturalium Universitatis Sunyatseni,2002,41(2):96-99. |
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| Authors: | YANG Jing HUANG Ping ZHONG Yi-long |
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| Abstract: | The flood forecasting model of Beijiang River downstream is an open model instead of a single flood forecasting approach.The hydrodynamics of main streams and tributaries is described by the Saint-Venant equations which are discretized with Preissmann scheme and solved with double-sweep method. Especially, the connection of flooded areas and the breaching are taken into consideration.The model is naturally fit to the boundary conditions of hydraulic calculation. It is quite simple to deal with interior conditions and there is no need to build matrix for solving branch equations. It has the advantages of small computer memory,high computing speed,and reasonable calculation results. |
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| Keywords: | the downstream of Beijiang River flood forecasting preissmann scheme double-sweep method the connection of flooded areas the breaching |
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