000130398 001__ 130398
000130398 005__ 20240125162929.0
000130398 0247_ $$2doi$$a10.1016/j.advwatres.2016.03.010
000130398 0248_ $$2sideral$$a97256
000130398 037__ $$aART-2016-97256
000130398 041__ $$aeng
000130398 100__ $$0(orcid)0000-0002-2985-1023$$aJuez, Carmelo
000130398 245__ $$aAssessment of the performance of numerical modeling in reproducing a replenishment of sediments in a water-worked channel
000130398 260__ $$c2016
000130398 5060_ $$aAccess copy available to the general public$$fUnrestricted
000130398 5203_ $$aThe artificial replenishment of sediment is used as a method to re-establish sediment continuity downstream of a dam. However, the impact of this technique on the hydraulics conditions, and resulting bed morphology, is yet to be understood. Several numerical tools have been developed during last years for modeling sediment transport and morphology evolution which can be used for this application. These models range from 1D to 3D approaches: the first being over simplistic for the simulation of such a complex geometry; the latter requires often a prohibitive computational effort. However, 2D models are computationally efficient and in these cases may already provide sufficiently accurate predictions of the morphology evolution caused by the sediment replenishment in a river. Here, the 2D shallow water equations in combination with the Exner equation are solved by means of a weak-coupled strategy. The classical friction approach considered for reproducing the bed channel roughness has been modified to take into account the morphological effect of replenishment which provokes a channel bed fining. Computational outcomes are compared with four sets of experimental data obtained from several replenishment configurations studied in the laboratory. The experiments differ in terms of placement volume and configuration. A set of analysis parameters is proposed for the experimental-numerical comparison, with particular attention to the spreading, covered surface and travel distance of placed replenishment grains. The numerical tool is reliable in reproducing the overall tendency shown by the experimental data. The effect of fining roughness is better reproduced with the approach herein proposed. However, it is also highlighted that the sediment clusters found in the experiment are not well numerically reproduced in the regions of the channel with a limited number of sediment grains.
000130398 536__ $$9info:eu-repo/grantAgreement/EC/FP7/607394/EU/Sediment transport in fluvial, estuarine and coastal environment/SEDITRANS
000130398 540__ $$9info:eu-repo/semantics/openAccess$$aby-nc-nd$$uhttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
000130398 590__ $$a3.221$$b2016
000130398 591__ $$aWATER RESOURCES$$b7 / 87 = 0.08$$c2016$$dQ1$$eT1
000130398 592__ $$a2.202$$b2016
000130398 593__ $$aWater Science and Technology$$c2016$$dQ1
000130398 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/acceptedVersion
000130398 700__ $$aBattisacco, Elena
000130398 700__ $$aSchleiss, Anton
000130398 700__ $$aFranca, Mário
000130398 773__ $$g92 (2016), 10-22$$pAdv. water resour.$$tAdvances in Water Resources$$x0309-1708
000130398 8564_ $$s1479480$$uhttps://zaguan.unizar.es/record/130398/files/texto_completo.pdf$$yPostprint
000130398 8564_ $$s1512116$$uhttps://zaguan.unizar.es/record/130398/files/texto_completo.jpg?subformat=icon$$xicon$$yPostprint
000130398 909CO $$ooai:zaguan.unizar.es:130398$$particulos$$pdriver
000130398 951__ $$a2024-01-25-15:07:24
000130398 980__ $$aARTICLE