Dimensional analysis of natural debris flows.
文献类型：期刊论文
| 作者 | Zhou GD(周公旦)
|
| 刊名 | Canadian Geotechnical Journal
 |
| 出版日期 | 2010-06-01 |
| 卷号 | 47期号:7页码:719-729 |
| 关键词 | debris flow dimensional analysis dimensionless number flowing regime channel confinement classification |
| 通讯作者 | 周公旦 |
| 合作状况 | 国际 |
| 英文摘要 | Debris flow is generally composed of a wide range of solid particles and viscous pore fluid. It flows at a high traveling velocity down a slope channel. Interactions between solid and fluid phases affected by multiple parameters govern the rheological properties of debris flows. A dimensional analysis for a systematic study of the governing parameters is presented. Multiple dimensionless numbers with clear physical meanings are critically reviewed. The applications of field data for studying natural debris flows are demonstrated. Specific values of dimensionless numbers for classifying flowing regimes of natural debris flows on the large scales are obtained. Compared to previous physical model tests on small scales, this study shows that the contact friction between particles dominates in natural debris flows. In addition, the solid inertial stress due to particle collisions and the pore fluid viscous shear stress play key roles in governing the dynamic properties of debris flows. The channel width as a confinement to the flows can affect the solids discharge per unit width significantly. A dimensionless number related to pore fluid pressure dissipation is also found for distinguishing surge flows and continuous flows in field satisfactorily. |
| 学科主题 | 自然地理学 ; 工程力学 |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2012-12-10 |
| 源URL | [http://192.168.143.20:8080/handle/131551/4407]  |
| 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 |
| 推荐引用方式 GB/T 7714 | Zhou GD. Dimensional analysis of natural debris flows.[J]. Canadian Geotechnical Journal,2010,47(7):719-729. |
| APA | Zhou GD.(2010).Dimensional analysis of natural debris flows..Canadian Geotechnical Journal,47(7),719-729. |
| MLA | Zhou GD."Dimensional analysis of natural debris flows.".Canadian Geotechnical Journal 47.7(2010):719-729. |
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。