Mean Velocity Estimation of Viscous Debris Flows
文献类型：期刊论文
| 作者 | Yang, Hongjuan1,2 ; Wei, Fangqiang2; Hu, Kaiheng2
|
| 刊名 | JOURNAL OF EARTH SCIENCE
 |
| 出版日期 | 2014-08-01 |
| 卷号 | 25期号:4页码:771-778 |
| 关键词 | debris flow velocity one-phase flow two-phase flow viscous |
| ISSN号 | 1674-487X |
| 通讯作者 | Fangqiang Wei |
| 英文摘要 | The mean velocity estimation of debris flows, especially viscous debris flows, is an important part in the debris flow dynamics research and in the design of control structures. In this study, theoretical equations for computing debris flow velocity with the one-phase flow assumption were reviewed and used to analyze field data of viscous debris flows. Results show that the viscous debris flow is difficult to be classified as a Newtonian laminar flow, a Newtonian turbulent flow, a Bingham fluid, or a dilatant fluid in the strict sense. However, we can establish empirical formulas to compute its mean velocity following equations for Newtonian turbulent flows, because most viscous debris flows are turbulent. Factors that potentially influence debris flow velocity were chosen according to two-phase flow theories. Through correlation analysis and data fitting, two empirical formulas were proposed. In the first one, velocity is expressed as a function of clay content, flow depth and channel slope. In the second one, a coefficient representing the grain size nonuniformity is used instead of clay content. Both formulas can give reasonable estimate of the mean velocity of the viscous debris flow. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Geosciences, Multidisciplinary |
| 研究领域[WOS] | Geology |
| 关键词[WOS] | AVALANCHES ; CHANNEL |
| 收录类别 | SCI |
| 原文出处 | http://link.springer.com/article/10.1007%2Fs12583-014-0465-z |
| 语种 | 英语 |
| WOS记录号 | WOS:000339462600018 |
| 公开日期 | 2014-12-15 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/7550]  |
| 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.Chinese Acad Sci, Key Lab Mt Hazards & Earth Surface Proc, Chengdu 610041, Peoples R China 2.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yang, Hongjuan,Wei, Fangqiang,Hu, Kaiheng. Mean Velocity Estimation of Viscous Debris Flows[J]. JOURNAL OF EARTH SCIENCE,2014,25(4):771-778. |
| APA | Yang, Hongjuan,Wei, Fangqiang,&Hu, Kaiheng.(2014).Mean Velocity Estimation of Viscous Debris Flows.JOURNAL OF EARTH SCIENCE,25(4),771-778. |
| MLA | Yang, Hongjuan,et al."Mean Velocity Estimation of Viscous Debris Flows".JOURNAL OF EARTH SCIENCE 25.4(2014):771-778. |
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。