Assessment of the performance of numerical modeling in reproducing a replenishment of sediments in a water-worked channel

The artificial replenishment of sediment is used as a method to re-establish sediment continuity downstream of a dam. However, the impact of this technique on the hydraulics conditions, and resulting bed morphology, is yet to be understood. Several numerical tools have been developed during last yea...

Descripción completa

Detalles Bibliográficos
Autores: Juez, Carmelo, Battisacco, E., Schleiss, A. J., Franca, M. J.
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2016
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/343836
Acceso en línea:http://hdl.handle.net/10261/343836
Access Level:acceso abierto
Palabra clave:2D Shallow water
Sediment replenishment
Bed-load transport
Dam impact
Bed-shear stress
Sediment management
id ES_7bae2ebfe588ceeb40e77c0057424771
oai_identifier_str oai:digital.csic.es:10261/343836
network_acronym_str ES
network_name_str España
repository_id_str
spelling Assessment of the performance of numerical modeling in reproducing a replenishment of sediments in a water-worked channelJuez, CarmeloBattisacco, E.Schleiss, A. J.Franca, M. J.2D Shallow waterSediment replenishmentBed-load transportDam impactBed-shear stressSediment managementThe artificial replenishment of sediment is used as a method to re-establish sediment continuity downstream of a dam. However, the impact of this technique on the hydraulics conditions, and resulting bed morphology, is yet to be understood. Several numerical tools have been developed during last years for modeling sediment transport and morphology evolution which can be used for this application. These models range from 1D to 3D approaches: the first being over simplistic for the simulation of such a complex geometry; the latter requires often a prohibitive computational effort. However, 2D models are computationally efficient and in these cases may already provide sufficiently accurate predictions of the morphology evolution caused by the sediment replenishment in a river. Here, the 2D shallow water equations in combination with the Exner equation are solved by means of a weak-coupled strategy. The classical friction approach considered for reproducing the bed channel roughness has been modified to take into account the morphological effect of replenishment which provokes a channel bed fining. Computational outcomes are compared with four sets of experimental data obtained from several replenishment configurations studied in the laboratory. The experiments differ in terms of placement volume and configuration. A set of analysis parameters is proposed for the experimental-numerical comparison, with particular attention to the spreading, covered surface and travel distance of placed replenishment grains. The numerical tool is reliable in reproducing the overall tendency shown by the experimental data. The effect of fining roughness is better reproduced with the approach herein proposed. However, it is also highlighted that the sediment clusters found in the experiment are not well numerically reproduced in the regions of the channel with a limited number of sediment grains.This work was funded by the ITN-Programme (Marie Curie Actions) of the European Union’s Seventh Framework Programme FP7-PEOPLE-2013-ITN under REA grant agreement n_607394-SEDITRANS. The sediment replenishment experiments were funded by FOEN (Federal Office for the Environment, Switzerland).Peer reviewedElsevierEuropean CommissionFederal Office for the Environment (Switzerland)202420242016info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Postprintinfo:eu-repo/semantics/acceptedVersionapplication/pdfhttp://hdl.handle.net/10261/343836reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/EC/FP7/607394-SEDITRANShttps://doi.org/10.1016/j.advwatres.2016.03.010Noinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3438362026-05-22T06:33:51Z
dc.title.none.fl_str_mv Assessment of the performance of numerical modeling in reproducing a replenishment of sediments in a water-worked channel
title Assessment of the performance of numerical modeling in reproducing a replenishment of sediments in a water-worked channel
spellingShingle Assessment of the performance of numerical modeling in reproducing a replenishment of sediments in a water-worked channel
Juez, Carmelo
2D Shallow water
Sediment replenishment
Bed-load transport
Dam impact
Bed-shear stress
Sediment management
title_short Assessment of the performance of numerical modeling in reproducing a replenishment of sediments in a water-worked channel
title_full Assessment of the performance of numerical modeling in reproducing a replenishment of sediments in a water-worked channel
title_fullStr Assessment of the performance of numerical modeling in reproducing a replenishment of sediments in a water-worked channel
title_full_unstemmed Assessment of the performance of numerical modeling in reproducing a replenishment of sediments in a water-worked channel
title_sort Assessment of the performance of numerical modeling in reproducing a replenishment of sediments in a water-worked channel
dc.creator.none.fl_str_mv Juez, Carmelo
Battisacco, E.
Schleiss, A. J.
Franca, M. J.
author Juez, Carmelo
author_facet Juez, Carmelo
Battisacco, E.
Schleiss, A. J.
Franca, M. J.
author_role author
author2 Battisacco, E.
Schleiss, A. J.
Franca, M. J.
author2_role author
author
author
dc.contributor.none.fl_str_mv European Commission
Federal Office for the Environment (Switzerland)
dc.subject.none.fl_str_mv 2D Shallow water
Sediment replenishment
Bed-load transport
Dam impact
Bed-shear stress
Sediment management
topic 2D Shallow water
Sediment replenishment
Bed-load transport
Dam impact
Bed-shear stress
Sediment management
description The artificial replenishment of sediment is used as a method to re-establish sediment continuity downstream of a dam. However, the impact of this technique on the hydraulics conditions, and resulting bed morphology, is yet to be understood. Several numerical tools have been developed during last years for modeling sediment transport and morphology evolution which can be used for this application. These models range from 1D to 3D approaches: the first being over simplistic for the simulation of such a complex geometry; the latter requires often a prohibitive computational effort. However, 2D models are computationally efficient and in these cases may already provide sufficiently accurate predictions of the morphology evolution caused by the sediment replenishment in a river. Here, the 2D shallow water equations in combination with the Exner equation are solved by means of a weak-coupled strategy. The classical friction approach considered for reproducing the bed channel roughness has been modified to take into account the morphological effect of replenishment which provokes a channel bed fining. Computational outcomes are compared with four sets of experimental data obtained from several replenishment configurations studied in the laboratory. The experiments differ in terms of placement volume and configuration. A set of analysis parameters is proposed for the experimental-numerical comparison, with particular attention to the spreading, covered surface and travel distance of placed replenishment grains. The numerical tool is reliable in reproducing the overall tendency shown by the experimental data. The effect of fining roughness is better reproduced with the approach herein proposed. However, it is also highlighted that the sediment clusters found in the experiment are not well numerically reproduced in the regions of the channel with a limited number of sediment grains.
publishDate 2016
dc.date.none.fl_str_mv 2016
2024
2024
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Postprint
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/343836
url http://hdl.handle.net/10261/343836
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/EC/FP7/607394-SEDITRANS
https://doi.org/10.1016/j.advwatres.2016.03.010
No
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869411533285490688
score 15,812429

Similares en LA Referencia