Coupled 2D Hydrodynamic and Sediment Transport Modeling of Megaflood due to Glacier Dam-break in Altai Mountains, Southern Siberia
文献类型：期刊论文
| 作者 | HUANG Wei ; CAO Zhi-xian ; Paul CARLING ; Gareth PENDER |
| 刊名 | Journal of Mountain Science
 |
| 出版日期 | 2014-11 |
| 卷号 | 11期号:6页码:1442-1453 |
| 关键词 | Glacier dam-break flood Well-balanced 2D hydrodynamic and sediment transport model OpenMP parallelization |
| 通讯作者 | HUANG Wei |
| 英文摘要 | One of the largest known megafloods on earth resulted from a glacier dam-break, which occurred during the Late Quaternary in the Altai Mountains in Southern Siberia. Computational modeling is one of the viable approaches to enhancing the understanding of the flood events. The computational domain of this flood is over 9460 km2 and about 3.784 106 cells are involved as a 50 m 50 m mesh is used, which necessitates a computationally efficient model. Here the OpenMP (Open Multiprocessing) technique is adopted to parallelize the code of a coupled 2D hydrodynamic and sediment transport model. It is shown that the computational efficiency is enhanced by over 80% due to the parallelization. The floods over both fixed and mobile beds are well reproduced with specified discharge hydrographs at the dam site. Qualitatively, backwater effects during the flood are resolved at the bifurcation between the Chuja and Katun rivers. Quantitatively, the computed maximum stage and thalweg are physically consistent with the field data of the bars and deposits. The effects of sediment transport and morphological evolution on the flood are considerable. Sensitivity analyses indicate that the impact of the peak discharge is significant, whilst those of the Manning roughness, medium sediment size and shape of the inlet discharge hydrograph are marginal. |
| 收录类别 | SCI |
| 公开日期 | 2014-11-18 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/7413]  |
| 专题 | 成都山地灾害与环境研究所_Journal of Mountain Science _Journal of Mountain Science-2014_Vol11 No.6 |
| 推荐引用方式 GB/T 7714 | HUANG Wei,CAO Zhi-xian,Paul CARLING,et al. Coupled 2D Hydrodynamic and Sediment Transport Modeling of Megaflood due to Glacier Dam-break in Altai Mountains, Southern Siberia[J]. Journal of Mountain Science,2014,11(6):1442-1453. |
| APA | HUANG Wei,CAO Zhi-xian,Paul CARLING,&Gareth PENDER.(2014).Coupled 2D Hydrodynamic and Sediment Transport Modeling of Megaflood due to Glacier Dam-break in Altai Mountains, Southern Siberia.Journal of Mountain Science,11(6),1442-1453. |
| MLA | HUANG Wei,et al."Coupled 2D Hydrodynamic and Sediment Transport Modeling of Megaflood due to Glacier Dam-break in Altai Mountains, Southern Siberia".Journal of Mountain Science 11.6(2014):1442-1453. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
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