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DOI | 10.1029/2018GL077571 |
Stresses and Drag in Turbulent Bed Load From Refractive Index-Matched Experiments | |
Ni, Wei-Jay1,2; Capart, Herve1,2 | |
2018-07-28 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2018 |
卷号 | 45期号:14页码:7000-7009 |
文章类型 | Article |
语种 | 英语 |
国家 | Taiwan |
英文摘要 | We report steady open-channel flow experiments that resolve the internal dynamics of turbulent bed load layers at subgrain diameter resolution. Optical access is gained by using materials of matched refractive index, and a laser light sheet is scanned across the medium to capture both the solid and liquid motions over a 3-D volume. The imaging measurements yield vertical profiles of granular concentration, solid and liquid mean velocity, and velocity fluctuation statistics including the granular temperature and the Reynolds stress. This makes it possible to determine all principal contributions to the momentum balance of each phase. In particular, experimental profiles are obtained for the stresses and interphase drag force. They are used to test constitutive relationships derived from kinetic theory, turbulence theory, and fluidization cell experiments. |
英文关键词 | bed load refractive index matching turbulence sediment transport |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000442582100028 |
WOS关键词 | GRANULAR FLOW RHEOLOGY ; SHEET-FLOW ; 2-PHASE MODEL ; CONCENTRATION PROFILES ; SEDIMENT TRANSPORT ; BEDLOAD TRANSPORT ; HARD-SPHERES ; STEEP SLOPE ; VELOCITY ; FLUID |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/27738 |
专题 | 气候变化 |
作者单位 | 1.Natl Taiwan Univ, Dept Civil Engn, Taipei, Taiwan; 2.Natl Taiwan Univ, Hydrotech Res Inst, Taipei, Taiwan |
推荐引用方式 GB/T 7714 | Ni, Wei-Jay,Capart, Herve. Stresses and Drag in Turbulent Bed Load From Refractive Index-Matched Experiments[J]. GEOPHYSICAL RESEARCH LETTERS,2018,45(14):7000-7009. |
APA | Ni, Wei-Jay,&Capart, Herve.(2018).Stresses and Drag in Turbulent Bed Load From Refractive Index-Matched Experiments.GEOPHYSICAL RESEARCH LETTERS,45(14),7000-7009. |
MLA | Ni, Wei-Jay,et al."Stresses and Drag in Turbulent Bed Load From Refractive Index-Matched Experiments".GEOPHYSICAL RESEARCH LETTERS 45.14(2018):7000-7009. |
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