Study on Flow Velocity Distribution in Open Channel With Flexible Vegetation

Ecological management of river channels is a hot topic for current sustainable development and flow measurement of ecological river is an important part. In this article, a flow velocity distribution model of the channel containing flexible vegetation is constructed from the vegetation riverbed theo...

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Autores principales:	Shiyu Wang, Yi Zhou, Tongshu Li, Song Li, Mingwu Zhang, Yu Han
Formato:	article
Lenguaje:	EN
Publicado:	Frontiers Media S.A. 2021
Materias:	flexible vegetation velocity distribution open channel bursting phenomenon mixing length Plant culture SB1-1110
Acceso en línea:	https://doaj.org/article/b7a8561c16a9474cba3e15d968f58d15
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spelling	oai:doaj.org-article:b7a8561c16a9474cba3e15d968f58d152021-11-22T05:28:48ZStudy on Flow Velocity Distribution in Open Channel With Flexible Vegetation1664-462X10.3389/fpls.2021.753613https://doaj.org/article/b7a8561c16a9474cba3e15d968f58d152021-11-01T00:00:00Zhttps://www.frontiersin.org/articles/10.3389/fpls.2021.753613/fullhttps://doaj.org/toc/1664-462XEcological management of river channels is a hot topic for current sustainable development and flow measurement of ecological river is an important part. In this article, a flow velocity distribution model of the channel containing flexible vegetation is constructed from the vegetation riverbed theory and the bursting phenomenon to reveal the microscopic mechanism of the flow velocity distribution in the upper layer of vegetation. In the vegetation riverbed law, the effect of flexible vegetation is evaluated by the mixed length formula. The bursting phenomenon law considers the influence of the channel sidewalls on the flow and a two-dimensional velocity model is established by introducing the concept of average turbulence structure. The mechanism of the downward shift of the maximum flow velocity point on the channel sidewall is explained. The verification of the calculated velocity profiles is carried out based on data obtained in laboratory experiments. The results show that the combination of the two models can well describe the velocity distribution of the whole channel. At the end, the phenomenon of flow velocity zoning in open channel is discussed, which provides a solution for flow measurement in ecological channel.Shiyu WangYi ZhouTongshu LiSong LiMingwu ZhangYu HanFrontiers Media S.A.articleflexible vegetationvelocity distributionopen channelbursting phenomenonmixing lengthPlant cultureSB1-1110ENFrontiers in Plant Science, Vol 12 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	flexible vegetation velocity distribution open channel bursting phenomenon mixing length Plant culture SB1-1110
spellingShingle	flexible vegetation velocity distribution open channel bursting phenomenon mixing length Plant culture SB1-1110 Shiyu Wang Yi Zhou Tongshu Li Song Li Mingwu Zhang Yu Han Study on Flow Velocity Distribution in Open Channel With Flexible Vegetation
description	Ecological management of river channels is a hot topic for current sustainable development and flow measurement of ecological river is an important part. In this article, a flow velocity distribution model of the channel containing flexible vegetation is constructed from the vegetation riverbed theory and the bursting phenomenon to reveal the microscopic mechanism of the flow velocity distribution in the upper layer of vegetation. In the vegetation riverbed law, the effect of flexible vegetation is evaluated by the mixed length formula. The bursting phenomenon law considers the influence of the channel sidewalls on the flow and a two-dimensional velocity model is established by introducing the concept of average turbulence structure. The mechanism of the downward shift of the maximum flow velocity point on the channel sidewall is explained. The verification of the calculated velocity profiles is carried out based on data obtained in laboratory experiments. The results show that the combination of the two models can well describe the velocity distribution of the whole channel. At the end, the phenomenon of flow velocity zoning in open channel is discussed, which provides a solution for flow measurement in ecological channel.
format	article
author	Shiyu Wang Yi Zhou Tongshu Li Song Li Mingwu Zhang Yu Han
author_facet	Shiyu Wang Yi Zhou Tongshu Li Song Li Mingwu Zhang Yu Han
author_sort	Shiyu Wang
title	Study on Flow Velocity Distribution in Open Channel With Flexible Vegetation
title_short	Study on Flow Velocity Distribution in Open Channel With Flexible Vegetation
title_full	Study on Flow Velocity Distribution in Open Channel With Flexible Vegetation
title_fullStr	Study on Flow Velocity Distribution in Open Channel With Flexible Vegetation
title_full_unstemmed	Study on Flow Velocity Distribution in Open Channel With Flexible Vegetation
title_sort	study on flow velocity distribution in open channel with flexible vegetation
publisher	Frontiers Media S.A.
publishDate	2021
url	https://doaj.org/article/b7a8561c16a9474cba3e15d968f58d15
work_keys_str_mv	AT shiyuwang studyonflowvelocitydistributioninopenchannelwithflexiblevegetation AT yizhou studyonflowvelocitydistributioninopenchannelwithflexiblevegetation AT tongshuli studyonflowvelocitydistributioninopenchannelwithflexiblevegetation AT songli studyonflowvelocitydistributioninopenchannelwithflexiblevegetation AT mingwuzhang studyonflowvelocitydistributioninopenchannelwithflexiblevegetation AT yuhan studyonflowvelocitydistributioninopenchannelwithflexiblevegetation
_version_	1718418123236835328

Study on Flow Velocity Distribution in Open Channel With Flexible Vegetation

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