Morvan, H, Knight, D, Wright, N et al. (2 more authors) (2010) The concept of roughness in fluvial hydraulics and its formulation in 1D, 2D and 3D numerical simulation models. Journal of Hydraulic Research, 46 (2). 191 - 208. ISSN 0022-1686
Abstract
This paper gives an overview of the meaning of the term “roughness” in the field of fluvial hydraulics, and how it is often formulated as a “resistance to flow” term in 1D, 2D and 3D numerical models. It looks at how roughness is traditionally characterized in both experimental and numerical fields, and subsequently challenges the definitions that currently exist. In the end, the authors wonder: Is roughness well understood and defined at all? Such a question raises a number of concerns in both research and practice; for example, how does one modeller use the roughness value from an experimental piece of work, or how does a practitioner identify the roughness value of a particular river channel? The authors indicate that roughness may not be uniquely defined, that there may be distinct “experimental” and “numerical” roughness values, and that in each field nuances exist associated with the context in which these values are used.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | This is an Author's Original Manuscript of an article published by Taylor & Francis Group in Journal of Hydraulic Research on April 2010 available online: http://www.tandfonline.com/10.1080/00221686.2008.9521855 |
Keywords: | Flow; modelling; resistance; rivers; roughness; flood channel facility; depth-averaged model; resistence coefficients; compond channel; flows; rivers; layer; calibration; friction; velocity |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Civil Engineering (Leeds) > Inst for Pathogen Control Engineering (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 25 Sep 2014 13:39 |
Last Modified: | 16 Jan 2018 21:17 |
Published Version: | http://dx.doi.org/10.1080/00221686.2008.9521855 |
Status: | Published |
Publisher: | Taylor & Francis |
Refereed: | Yes |
Identification Number: | 10.1080/00221686.2008.9521855 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:80322 |