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| 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
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| Source Publication | Advances in Water Resources
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| 2010 | |
| Volume | 33Issue:6Pages:635-639 |
| ISSN | 0309-1708 |
| Abstract | The 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. |
| DOI | 10.1016/j.advwatres.2010.03.006 |
| URL | 查看原文 |
| Indexed By | SCI |
| Language | 英语 |
| WOS ID | WOS:000278972700003 |
| WOS Keyword | VERTICAL VELOCITY DISTRIBUTION ; OPEN-CHANNEL FLOW ; FLEXIBLE VEGETATION ; MODEL ; RESISTANCE ; STREAMS |
| WOS Research Area | Water Resources |
| WOS Subject | Water Resources |
| Funding Organization | Natural Science Foundation of China [50679061, 50709025] |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/43583 |
| Collection | 环境力学重点实验室(2009-2011) |
| Corresponding Author | Zhou 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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