期刊
JOURNAL OF HYDRAULIC RESEARCH
卷 57, 期 1, 页码 131-138出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/00221686.2018.1444677
关键词
Dam-break flow; experiments; mobile bed; particle image velocimetry (PIV); particle-laden flows; velocity measurements
资金
- Multi-ITN EU-FP7 project SEDITRANS (Sediment transport in fluvial, estuarine and coastal environments) [607394]
Knowledge of the velocity distribution is key for understanding and modelling any type of flow. For steady flows over fixed beds, theoretical and experimental approaches evidenced a logarithmic law in the inner region, in the vicinity of the bed. For flows over mobile beds or for unsteady flows, the velocity profile progressively adapts to the changing flow conditions. In the present paper, new experiments of dam-break flows over a bed made of coarse sand are presented. Detailed velocity measurements both in the clear water layer and in the moving sediment layer were obtained. The measurements show that a logarithmic velocity profile develops not only in the clear-water layer but also in the upper part of the moving sediment layer, in a similar way to previous observations in steady flow with sheet-flow sediment transport.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据