IMECH-IR  > 环境力学重点实验室(2009-2011)
The mechanism of energy loss and transition in a flow with submerged vegetation
Huai WX; Han J; Geng C; Zhou JF(周济福); Zeng YH; Zhou JF
Source PublicationAdvances in Water Resources
2010
Volume33Issue:6Pages:635-639
ISSN0309-1708
AbstractThe mechanism of energy balance in an open-channel flow with submerged vegetation was investigated. The energy borrowed from the local flow, energy spending caused by vegetation drag and flow resistance, and energy transition along the water depth were calculated on the basis of the computational results of velocity and Reynolds stress. Further analysis showed that the energy spending in a cross-section was a maximum around the top of the vegetation, and its value decreased progressively until reaching zero at the flume bed or water surface. The energy borrowed from the local flow in the vegetated region could not provide for spending; therefore, surplus borrowed energy in the non-vegetated region was transmitted to the vegetated region. In addition, the total energy transition in the cross-section was zero; therefore, the total energy borrowed from the flow balanced the energy loss in the whole cross-section. At the same time, we found that there were three effects of vegetation on the flow: turbulence restriction due to vegetation, turbulence source due to vegetation and energy transference due to vegetation, where the second effect was the strongest one. Crown Copyright (C) 2010 Published by Elsevier Ltd. All rights reserved.
DOI10.1016/j.advwatres.2010.03.006
URL查看原文
Indexed BySCI
Language英语
WOS IDWOS:000278972700003
WOS KeywordVERTICAL VELOCITY DISTRIBUTION ; OPEN-CHANNEL FLOW ; FLEXIBLE VEGETATION ; MODEL ; RESISTANCE ; STREAMS
WOS Research AreaWater Resources
WOS SubjectWater Resources
Funding OrganizationNatural Science Foundation of China [50679061, 50709025]
Citation statistics
Cited Times:8[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/43583
Collection环境力学重点实验室(2009-2011)
Corresponding AuthorZhou JF
Recommended Citation
GB/T 7714
Huai WX,Han J,Geng C,et al. The mechanism of energy loss and transition in a flow with submerged vegetation[J]. Advances in Water Resources,2010,33(6):635-639.
APA Huai WX,Han J,Geng C,周济福,Zeng YH,&Zhou JF.(2010).The mechanism of energy loss and transition in a flow with submerged vegetation.Advances in Water Resources,33(6),635-639.
MLA Huai WX,et al."The mechanism of energy loss and transition in a flow with submerged vegetation".Advances in Water Resources 33.6(2010):635-639.
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