Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2021WR029860 |
An experimental and numerical approach to modeling large wood displacement in rivers | |
D. Panici | |
2021-07-08 | |
发表期刊 | Water Resources Research |
出版年 | 2021 |
英文摘要 | Large wood (LW) is used for river restoration, aquatic habitat conservation, and flood control; however,it can pose a threat to human life and the built environment. The formation of LW jams, river management strategies, and design of mitigation measures crucially all depend on how the large wood is transported along a river. This paper experimentally analyses at laboratory scale the motion of natural sticks in a long stretch of a straight channel (16 m), when LW is released at different locations and with different flow conditions. Results show that instream large wood, following a transient motion shortly after being released at the water surface, tends to follow preferential patterns along the channel. Froude number and location of large wood input may provide an estimation of the LW location in downstream reaches. Several mechanisms of motion were observed, some of which were very common, including a frequent tendency to assume a tilted position with respect to the direction parallel to the flow. The experiments also suggest that theories on secondary cells responsible for channeling LW in preferential directions are incomplete. A new model, based on acceleration induced by hydrodynamic actions, has been established and proposed in this work, showing promising results and paving the way for the development of a comprehensive model for transport of large wood at the river surface in full-scale applications. This article is protected by copyright. All rights reserved. |
领域 | 资源环境 |
URL | 查看原文 |
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文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/333747 |
专题 | 资源环境科学 |
推荐引用方式 GB/T 7714 | D. Panici. An experimental and numerical approach to modeling large wood displacement in rivers[J]. Water Resources Research,2021. |
APA | D. Panici.(2021).An experimental and numerical approach to modeling large wood displacement in rivers.Water Resources Research. |
MLA | D. Panici."An experimental and numerical approach to modeling large wood displacement in rivers".Water Resources Research (2021). |
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