Full 2D Hydrodynamic Modelling of Rainfall-induced Flash Floods
文献类型：期刊论文
| 作者 | HUANG Wei; CAO Zhi-xian; QI Wen-jun; Gareth PENDER; ZHAO Kai |
| 刊名 | Journal of Mountain Science
 |
| 出版日期 | 2015-09 |
| 卷号 | 12期号:5页码:1203-1218 |
| 关键词 | Flash flood Full hydrodynamic model Spatial distribution Rainfall |
| ISSN号 | 1672-6316 |
| 通讯作者 | CAO Zhi-xian |
| 英文摘要 | Mountain catchments are prone to flash flooding due to heavy rainfall. Enhanced understanding of the generation and evolution processes of flash floods is essential for effective flood risk management. However, traditional distributed hydrological models based on kinematic and diffusion wave approximations ignore certain physical mechanisms of flash floods and thus bear excessive uncertainty. Here a hydrodynamic model is presented for flash floods based on the full two-dimensional shallow water equations incorporating rainfall and infiltration. Laboratory experiments of overland flows were modelled to illustrate the capability of the model. Then the model was applied to resolve two observed flash floods of distinct magnitudes in the Lengkou catchment in Shanxi Province, China. The present model is shown to be able to reproduce the flood flows fairly well compared to the observed data. The spatial distribution of rainfall is shown to be crucial for the modelling of flash floods. Sensitivity analyses of the model parameters reveal that the stage and discharge hydrographs are more sensitive to the Manning roughness and initial water content in the catchment than to the Green-Ampt head. Most notably, as the flash flood augments due to heavier rainfall, the modelling results agree with observed data better, which clearly characterizes the paramount role of rainfall in dictating the floods. From practical perspectives, the proposed model is more appropriate for modelling large flash floods. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/10889]  |
| 专题 | 成都山地灾害与环境研究所_Journal of Mountain Science _Journal of Mountain Science-2015_Vol12 No.5 |
| 推荐引用方式 GB/T 7714 | HUANG Wei,CAO Zhi-xian,QI Wen-jun,et al. Full 2D Hydrodynamic Modelling of Rainfall-induced Flash Floods[J]. Journal of Mountain Science,2015,12(5):1203-1218. |
| APA | HUANG Wei,CAO Zhi-xian,QI Wen-jun,Gareth PENDER,&ZHAO Kai.(2015).Full 2D Hydrodynamic Modelling of Rainfall-induced Flash Floods.Journal of Mountain Science,12(5),1203-1218. |
| MLA | HUANG Wei,et al."Full 2D Hydrodynamic Modelling of Rainfall-induced Flash Floods".Journal of Mountain Science 12.5(2015):1203-1218. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。