Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2020WR028620 |
Impact of stem size on turbulence and sediment resuspension under unidirectional flow | |
Chao Liu; Yuqi Shan; Heidi Nepf | |
2021-02-16 | |
发表期刊 | Water Resources Research |
出版年 | 2021 |
英文摘要 | Laboratory experiments examined the impact of model vegetation on turbulence and resuspension. The turbulent kinetic energy increased with increasing velocity and increasing solid volume fraction, but did not depend on stem diameter. The vegetation‐generated turbulence dominated the total turbulence inside canopies. For the same sediment size, the critical turbulent kinetic energy at which resuspension was initiated was the same for both vegetated and bare beds, which resulted in a critical velocity that decreased with increasing solid volume fraction. Both the critical turbulence and critical velocity for resuspension had no dependence on stem diameter. However, for denser canopies and/or a canopy of smaller stem size, a greater energy slope is required to initiate resuspension. This study provides a way to predict the onset of resuspension in regions with vegetation, an important threshold for sediment transport and landscape evolution. |
领域 | 资源环境 |
URL | 查看原文 |
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/315629 |
专题 | 资源环境科学 |
推荐引用方式 GB/T 7714 | Chao Liu,Yuqi Shan,Heidi Nepf. Impact of stem size on turbulence and sediment resuspension under unidirectional flow[J]. Water Resources Research,2021. |
APA | Chao Liu,Yuqi Shan,&Heidi Nepf.(2021).Impact of stem size on turbulence and sediment resuspension under unidirectional flow.Water Resources Research. |
MLA | Chao Liu,et al."Impact of stem size on turbulence and sediment resuspension under unidirectional flow".Water Resources Research (2021). |
条目包含的文件 | 条目无相关文件。 |
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