Flow resistance of emergent vegetation

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Title: Flow resistance of emergent vegetation
Authors: James, C. S.
Birkhead, A. L.
Jordanova, A. A.
O'Sullivan, J. J.
Permanent link: http://hdl.handle.net/10197/4099
Date: 2004
Online since: 2013-02-13T16:29:40Z
Abstract: Conventional resistance equations (such as those of Manning, Chézy and Darcy-Weisbach) are inappropriate for flow through emergent vegetation, where resistance is exerted primarily by stem drag throughout the flow depth rather than by shear stress at the bed. An alternative equation form is suggested, in which the resistance coefficient is related to measurable vegetation characteristics and can incorporate bed roughness when this is significant. Equation performance is confirmed by comparison of predicted and measured stage-discharge relationships for flow through artificial cylindrical stems, and by comparison of calibrated and measured drag coefficient values for natural vegetation.
Type of material: Journal Article
Publisher: Taylor and Francis
Journal: Journal of Hydraulic Research
Volume: 42
Issue: 4
Start page: 390
End page: 398
Copyright (published version): 2004, International Association of Hydraulic Engineering and Research
Keywords: Flow resistanceVegetationStem dragResistance coefficient
DOI: 10.1080/00221686.2004.9641206
Language: en
Status of Item: Peer reviewed
Appears in Collections:Civil Engineering Research Collection

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