A depth-averaged non-cohesive sediment transport model with improved discretization of flux and source terms

dc.contributor.authorZhao, Jiaheng
dc.contributor.authorÖzgen-Xian, Ilhan
dc.contributor.authorLiang, Dongfang
dc.contributor.authorWang, Tian
dc.contributor.authorHinkelmann, Reinhard
dc.date.accessioned2019-04-29T11:51:15Z
dc.date.available2019-04-29T11:51:15Z
dc.date.issued2019
dc.description.abstractThis paper presents novel flux and source term treatments within a Godunov-type finite volume framework for predicting the depth-averaged shallow water flow and sediment transport with enhanced the accuracy and stability. The suspended load ratio is introduced to differentiate between the advection of the suspended load and the advection of water. A modified Harten, Lax and van Leer Riemann solver with the contact wave restored (HLLC) is derived for the flux calculation based on the new wave pattern involving the suspended load ratio. The source term calculation is enhanced by means of a novel splitting-point implicit discretization. The slope effect is introduced by modifying the critical shear stress, with two treatments being discussed. The numerical scheme is tested in five examples that comprise both fixed and movable beds. The model predictions show good agreement with measurement, except for cases where local three-dimensional effects dominate.en
dc.identifier.issn0022-1694
dc.identifier.urihttps://depositonce.tu-berlin.de/handle/11303/9359
dc.identifier.urihttp://dx.doi.org/10.14279/depositonce-8417
dc.language.isoenen
dc.relation.ispartof10.14279/depositonce-8380
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subject.ddc627 Wasserbaude
dc.subject.othersediment transporten
dc.subject.othertotal load modelen
dc.subject.otherHLLC Riemann solveren
dc.subject.otherfinite-volume methoden
dc.subject.othersource term treatmenten
dc.subject.otherSedimenttransportde
dc.subject.otherGesamtlastmodellde
dc.subject.otherFinite-Volumen-Verfahrende
dc.titleA depth-averaged non-cohesive sediment transport model with improved discretization of flux and source termsen
dc.typeArticleen
dc.type.versionacceptedVersionen
dcterms.bibliographicCitation.doi10.1016/j.jhydrol.2018.12.059en
dcterms.bibliographicCitation.journaltitleJournal of hydrologyen
dcterms.bibliographicCitation.originalpublishernameElsevieren
dcterms.bibliographicCitation.originalpublisherplaceAmsterdamen
dcterms.bibliographicCitation.pageend665en
dcterms.bibliographicCitation.pagestart647en
dcterms.bibliographicCitation.volume570en
tub.accessrights.dnbdomain*
tub.affiliationFak. 6 Planen Bauen Umwelt>Inst. Bauingenieurwesen>FG Wasserwirtschaft und Hydrosystemmodellierungde
tub.affiliation.facultyFak. 6 Planen Bauen Umweltde
tub.affiliation.groupFG Wasserwirtschaft und Hydrosystemmodellierungde
tub.affiliation.instituteInst. Bauingenieurwesende
tub.publisher.universityorinstitutionTechnische Universität Berlinen
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