Representative roughness height of submerged vegetation.

DSpace/Manakin Repository


Search DR-NTU

Advanced Search Subject Search


My Account

Representative roughness height of submerged vegetation.

Show simple item record

dc.contributor.author Cheng, Nian-Sheng
dc.date.accessioned 2011-09-27T01:06:04Z
dc.date.available 2011-09-27T01:06:04Z
dc.date.copyright 2011
dc.date.issued 2011-09-27
dc.identifier.citation Cheng, N. S. (2011). Representative roughness height of submerged vegetation. Water resources research, 47(8).
dc.identifier.issn 0043–1397
dc.identifier.uri http://hdl.handle.net/10220/7111
dc.description.abstract Roughness length scale is important in the evaluation of resistance caused by submerged vegetation in open channel flows. By transforming the concept of hydraulic radius, a representative roughness height is proposed in this study for quantifying effect of submerged vegetation on flow resistance in the surface layer. The proposed roughness height is characterized by its proportionality to both stem diameter and vegetation concentration and performs better than other length scales in collapsing resistance data collected under a wide range of vegetation conditions. An approach is then developed for estimate of the average flow velocity and thus resistance coefficients for both cases of rigid and flexible vegetation. Comparisons are also made between the present study and other four formulas available in the literature. This study also shows that all the formulas, if simplified for some simple conditions, can be unified in a general form.
dc.format.extent 18 p.
dc.language.iso en
dc.relation.ispartofseries Water resources research
dc.rights © 2011 American Geophysical Union. This paper was published in Water Resources Research and is made available as an electronic reprint (preprint) with permission of American Geophysical Union. The paper can be found at: [DOI: http://dx.doi.org/10.1029/2011WR010590]. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law.
dc.subject DRNTU::Engineering::Civil engineering::Water resources
dc.title Representative roughness height of submerged vegetation.
dc.type Journal Article
dc.contributor.school School of Civil and Environmental Engineering
dc.identifier.doi http://dx.doi.org/10.1029/2011WR010590
dc.description.version Published version

Files in this item

Files Size Format View Description
Representative ... f submerged vegetation.pdf 1.084Mb PDF View/Open Main article

This item appears in the following Collection(s)

Show simple item record


Total views

All Items Views
Representative roughness height of submerged vegetation. 560

Total downloads

All Bitstreams Views
Representative roughness height of submerged vegetation.pdf 251
Revised Manuscript _with figures and captions_.pdf 5

Top country downloads

Country Code Views
United States of America 80
China 68
Singapore 39
Germany 7
Italy 6

Top city downloads

city Views
Mountain View 47
Beijing 40
Singapore 36
Padova 4
Birmingham 2