Simulating Progression of Internal Erosion in Gap-Graded Sandy Gravels Using Coupled CFD-DEM
文献类型：期刊论文
| 作者 | Zou Yuhua1 ; Chen Chen2; Zhang Limin3
|
| 刊名 | INTERNATIONAL JOURNAL OF GEOMECHANICS
 |
| 出版日期 | 2020 |
| 卷号 | 20期号:1页码:4019135 |
| ISSN号 | 1532-3641 |
| 关键词 | Internal erosion Suffusion Seepage Discrete-element method Fluid-solid coupling |
| DOI | 10.1061/(ASCE)GM.1943-5622.0001520 |
| 产权排序 | 1 |
| 文献子类 | Article |
| 英文摘要 | Loss of fine particles or suffusion in soils induced by seepage is an important problem that may cause dam or dike failures. This paper aims to study the evolution mechanisms of suffusion in gap-graded sandy gravels using coupled computational fluid dynamics and discrete-element method (CFD-DEM). In the simulation, five groups of sandy gravel including four groups of gap-graded sandy gravel and a benchmark linearly graded sandy gravel were studied. Changes in flow rate, evolution of porosity in different layers, and spatial and temporal redistributions of particles in the samples during suffusion under upward seepage were studied. Simulation results show that when the fine particle content is the same, the total fine erosion ratio is larger when the stability index (H/F)min of the gap-graded sandy gravel is lower. The porosities of five layers of the gap-graded sandy gravel change continuously with infiltration time. A slight decrease in the fine grain content appears in the upper layers, while a sharp reduction in the fine grain content occurs in the bottom layer. The study provides a mechanics basis for the prediction and prevention of suffusion in gap-graded sandy gravels. (c) 2019 American Society of Civil Engineers. |
| 电子版国际标准刊号 | 1943-5622 |
| 语种 | 英语 |
| WOS记录号 | WOS:000497651200004 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/33464]  |
| 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 |
| 通讯作者 | Zhang Limin |
| 作者单位 | 1.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Hazards & Earth Surface Proc, Chengdu 610041, Sichuan, Peoples R China; 2.Sichuan Univ, State Key Lab Hydraul & Mt River Engn, Chengdu 610065, Sichuan, Peoples R China; 3.Hong Kong Univ Sci & Technol, Dept Civil & Environm Engn, Clear Water Bay, Hong Kong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zou Yuhua,Chen Chen,Zhang Limin. Simulating Progression of Internal Erosion in Gap-Graded Sandy Gravels Using Coupled CFD-DEM[J]. INTERNATIONAL JOURNAL OF GEOMECHANICS,2020,20(1):4019135. |
| APA | Zou Yuhua,Chen Chen,&Zhang Limin.(2020).Simulating Progression of Internal Erosion in Gap-Graded Sandy Gravels Using Coupled CFD-DEM.INTERNATIONAL JOURNAL OF GEOMECHANICS,20(1),4019135. |
| MLA | Zou Yuhua,et al."Simulating Progression of Internal Erosion in Gap-Graded Sandy Gravels Using Coupled CFD-DEM".INTERNATIONAL JOURNAL OF GEOMECHANICS 20.1(2020):4019135. |
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。