Please use this identifier to cite or link to this item:
https://hdl.handle.net/10316/3950
DC Field | Value | Language |
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dc.contributor.author | Franca, Mário J. | - |
dc.contributor.author | Ferreira, Rui M. L. | - |
dc.contributor.author | Lemmin, Ulrich | - |
dc.date.accessioned | 2008-09-01T09:46:23Z | - |
dc.date.available | 2008-09-01T09:46:23Z | - |
dc.date.issued | 2008 | en_US |
dc.identifier.citation | Advances in Water Resources. 31:6 (2008) 915-925 | en_US |
dc.identifier.uri | https://hdl.handle.net/10316/3950 | - |
dc.description.abstract | The logarithmic layer of double-averaged (in time and space) streamwise velocity profiles obtained from field measurements made in the Swiss rivers, Venoge and Chamberonne is parameterized and discussed. Velocity measurements were made using a 3D Acoustic Doppler Velocity Profiler. Both riverbeds are hydraulically rough, composed of coarse gravel, with relative submergences (h/D50) of 5.25 and 5.96, respectively. From the observations, the flow may be divided into three different layers: a roughness layer near the bed, an equivalent logarithmic layer and a surface or outer layer. It was found that a logarithmic law can describe the double-averaged profiles in the layer 0.30 < z/h < 0.75. The parameterization of the logarithmic law is discussed. Special emphasis is given to the geometric parameters roughness and zero-displacement heights and to the equivalent von Karman constant. | en_US |
dc.description.uri | http://www.sciencedirect.com/science/article/B6VCF-4S33NBV-1/1/bbf4c14ea5ed4a1062a36f1c5b373f12 | en_US |
dc.format.mimetype | aplication/PDF | en |
dc.language.iso | eng | eng |
dc.rights | openAccess | eng |
dc.subject | Double-averaged velocity profiles | en_US |
dc.subject | Logarithmic law | en_US |
dc.subject | Velocity field measurements | en_US |
dc.title | Parameterization of the logarithmic layer of double-averaged streamwise velocity profiles in gravel-bed river flows | en_US |
dc.type | article | en_US |
dc.identifier.doi | 10.1016/j.advwatres.2008.03.001 | - |
item.openairetype | article | - |
item.fulltext | Com Texto completo | - |
item.languageiso639-1 | en | - |
item.grantfulltext | open | - |
item.cerifentitytype | Publications | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
crisitem.author.researchunit | MARE - Marine and Environmental Sciences Centre | - |
crisitem.author.orcid | 0000-0002-0265-8581 | - |
Appears in Collections: | FCTUC Eng.Civil - Artigos em Revistas Internacionais |
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filee74793c29fcc45918c1955dd9c454523.pdf | 933.63 kB | Adobe PDF | View/Open |
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