Mostrar el registro sencillo del ítem
dc.contributor.author
Sandbach, Steven D.
![Se ha confirmado la validez de este valor de autoridad por un usuario](/themes/CONICETDigital/images/authority_control/invisible.gif)
dc.contributor.author
Lane, Stuart N.
![Se ha confirmado la validez de este valor de autoridad por un usuario](/themes/CONICETDigital/images/authority_control/invisible.gif)
dc.contributor.author
Hardy, Richard J.
![Se ha confirmado la validez de este valor de autoridad por un usuario](/themes/CONICETDigital/images/authority_control/invisible.gif)
dc.contributor.author
Amsler, Mario Luis
![Se ha confirmado la validez de este valor de autoridad por un usuario](/themes/CONICETDigital/images/authority_control/invisible.gif)
dc.contributor.author
Ashworth, Philip J.
![Se ha confirmado la validez de este valor de autoridad por un usuario](/themes/CONICETDigital/images/authority_control/invisible.gif)
dc.contributor.author
Best, James L.
![Se ha confirmado la validez de este valor de autoridad por un usuario](/themes/CONICETDigital/images/authority_control/invisible.gif)
dc.contributor.author
Nicholas, Andrew P.
![Se ha confirmado la validez de este valor de autoridad por un usuario](/themes/CONICETDigital/images/authority_control/invisible.gif)
dc.contributor.author
Orfeo, Oscar
![Se ha confirmado la validez de este valor de autoridad por un usuario](/themes/CONICETDigital/images/authority_control/invisible.gif)
dc.contributor.author
Parsons, Daniel R.
![Se ha confirmado la validez de este valor de autoridad por un usuario](/themes/CONICETDigital/images/authority_control/invisible.gif)
dc.contributor.author
Reesink, Arjan
dc.contributor.author
Szupiany, Ricardo Nicolas
![Se ha confirmado la validez de este valor de autoridad por un usuario](/themes/CONICETDigital/images/authority_control/invisible.gif)
dc.date.available
2019-03-19T14:46:10Z
dc.date.issued
2012-12
dc.identifier.citation
Sandbach, Steven D.; Lane, Stuart N.; Hardy, Richard J.; Amsler, Mario Luis; Ashworth, Philip J.; et al.; Application of a roughness-length representation to parameterize energy loss in 3-D numerical simulations of large rivers; American Geophysical Union; Water Resources Research; 48; 12; 12-2012; 1-21
dc.identifier.issn
0043-1397
dc.identifier.uri
http://hdl.handle.net/11336/71991
dc.description.abstract
Recent technological advances in remote sensing have enabled investigation of the morphodynamics and hydrodynamics of large rivers. However, measuring topography and flow in these very large rivers is time consuming and thus often constrains the spatial resolution and reach-length scales that can be monitored. Similar constraints exist for computational fluid dynamics (CFD) studies of large rivers, requiring maximization of mesh- or grid-cell dimensions and implying a reduction in the representation of bedform-roughness elements that are of the order of a model grid cell or less, even if they are represented in available topographic data. These "subgrid" elements must be parameterized, and this paper applies and considers the impact of roughness-length treatments that include the effect of bed roughness due to "unmeasured" topography. CFD predictions were found to be sensitive to the roughness-length specification. Model optimization was based on acoustic Doppler current profiler measurements and estimates of the water surface slope for a variety of roughness lengths. This proved difficult as the metrics used to assess optimal model performance diverged due to the effects of large bedforms that are not well parameterized in roughness-length treatments. However, the general spatial flow patterns are effectively predicted by the model. Changes in roughness length were shown to have a major impact upon flow routing at the channel scale. The results also indicate an absence of secondary flow circulation cells in the reached studied, and suggest simpler two-dimensional models may have great utility in the investigation of flow within large rivers
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
American Geophysical Union
![Se ha confirmado la validez de este valor de autoridad por un usuario](/themes/CONICETDigital/images/authority_control/invisible.gif)
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Large Rivers
dc.subject
Cfd
dc.subject
Roughness Parameterization
dc.subject
Secondary Flow
dc.subject
Energy Loss
dc.subject
Bed Resistance
dc.subject.classification
Meteorología y Ciencias Atmosféricas
![Se ha confirmado la validez de este valor de autoridad por un usuario](/themes/CONICETDigital/images/authority_control/invisible.gif)
dc.subject.classification
Ciencias de la Tierra y relacionadas con el Medio Ambiente
![Se ha confirmado la validez de este valor de autoridad por un usuario](/themes/CONICETDigital/images/authority_control/invisible.gif)
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
![Se ha confirmado la validez de este valor de autoridad por un usuario](/themes/CONICETDigital/images/authority_control/invisible.gif)
dc.title
Application of a roughness-length representation to parameterize energy loss in 3-D numerical simulations of large rivers
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2019-03-18T14:40:43Z
dc.journal.volume
48
dc.journal.number
12
dc.journal.pagination
1-21
dc.journal.pais
Estados Unidos
![Se ha confirmado la validez de este valor de autoridad por un usuario](/themes/CONICETDigital/images/authority_control/invisible.gif)
dc.description.fil
Fil: Sandbach, Steven D.. Durham University - Department Of Geography; Reino Unido
dc.description.fil
Fil: Lane, Stuart N.. Universite´ de Lausanne, Lausanne, Switzerland; Suiza
dc.description.fil
Fil: Hardy, Richard J.. Durham University - Department Of Geography; Reino Unido
dc.description.fil
Fil: Amsler, Mario Luis. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto Nacional de Limnología. Universidad Nacional del Litoral. Instituto Nacional de Limnología; Argentina
dc.description.fil
Fil: Ashworth, Philip J.. University Of Brighton - School Of The Envirom And Tech; Reino Unido
dc.description.fil
Fil: Best, James L.. University Of Illinois - Dept. Of Geology And Geography; Estados Unidos
dc.description.fil
Fil: Nicholas, Andrew P.. University Of Exeter - Department Of Geography; Argentina
dc.description.fil
Fil: Orfeo, Oscar. Centro de Ecología Aplicada, Conicet; Argentina
dc.description.fil
Fil: Parsons, Daniel R.. University Of Hull, Hull, Uk; Argentina
dc.description.fil
Fil: Reesink, Arjan. University Of Brighton - School Of The Envirom And Tech; Argentina
dc.description.fil
Fil: Szupiany, Ricardo Nicolas. Universidad Nacional del Litoral. Facultad de Ingeniería y Ciencias Hídricas. Departamento de Hidráulica; Argentina
dc.journal.title
Water Resources Research
![Se ha confirmado la validez de este valor de autoridad por un usuario](/themes/CONICETDigital/images/authority_control/invisible.gif)
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1029/2011WR011284
Archivos asociados