Two-dimensional numerical model for debris flows in the Jiangjia Gully, Yunnan Province
文献类型：期刊论文
| 作者 | Peng Hong2; Zhao Yanxin1; Cui Peng3 ; Zhang Wanshun1; Chen Xuejiao1; Chen Xiaoqing3
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| 刊名 | JOURNAL OF MOUNTAIN SCIENCE
 |
| 出版日期 | 2011-12-01 |
| 卷号 | 8期号:6页码:757-766 |
| 关键词 | Debris flow Numerical simulation SIMPLE algorithm Finite Volume Method Hazard analysis Jiangjia Gully |
| ISSN号 | 1672-6316 |
| 通讯作者 | Zhang, WS |
| 英文摘要 | Debris flows are recurrent natural hazards in many mountainous regions. This paper presents a numerical study on the propagation of debris flows in natural erodible open channels, in which the bed erosion and sedimentation processes are important. Based on the Bingham fluid theory, a mathematical model of the two-dimensional non-constant debris flow is developed. The governing equations include the continuity and momentum conservation equations of debris flow, the sediment convection-diffusion equation, the bed erosion-deposition equation and the bed-sediment size gradation adjustment equation. The yield stress and shear stress components are included to describe the dynamic rheological properties. The upwind control-volume Finite Volume Method (FVM) is applied to discretize the convection terms. The improved SIMPLE algorithm with velocity-free-surface coupled correction is developed to solve the equations on non-orthogonal, quadrilateral grids. The model is applied to simulate a debris flow event in Jiangjia Gully, Yunnan Province and to predict the flow pattern and bed erosion-deposition processes. The results show the effectiveness of the proposed numercial model in debris flow simulation and potential hazard analysis. |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine |
| 类目[WOS] | Environmental Sciences |
| 研究领域[WOS] | Environmental Sciences & Ecology |
| 关键词[WOS] | SEDIMENT TRANSPORT CAPACITY ; SIMULATION ; INITIATION |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000297365300001 |
| 公开日期 | 2013-06-25 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/5472]  |
| 专题 | 成都山地灾害与环境研究所_山地灾害与地表过程重点实验室 |
| 作者单位 | 1.Wuhan Univ, Sch Resource & Environm Sci, Wuhan 430079, Peoples R China 2.Wuhan Univ, Coll Water Resources & Hydropower Engn, Wuhan 430072, Peoples R China 3.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China |
| 推荐引用方式 GB/T 7714 | Peng Hong,Zhao Yanxin,Cui Peng,et al. Two-dimensional numerical model for debris flows in the Jiangjia Gully, Yunnan Province[J]. JOURNAL OF MOUNTAIN SCIENCE,2011,8(6):757-766. |
| APA | Peng Hong,Zhao Yanxin,Cui Peng,Zhang Wanshun,Chen Xuejiao,&Chen Xiaoqing.(2011).Two-dimensional numerical model for debris flows in the Jiangjia Gully, Yunnan Province.JOURNAL OF MOUNTAIN SCIENCE,8(6),757-766. |
| MLA | Peng Hong,et al."Two-dimensional numerical model for debris flows in the Jiangjia Gully, Yunnan Province".JOURNAL OF MOUNTAIN SCIENCE 8.6(2011):757-766. |
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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