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dc.creatorĐorđević, Dejana
dc.date.accessioned2019-04-19T14:20:31Z
dc.date.available2019-04-19T14:20:31Z
dc.date.issued2013
dc.identifier.issn1464-7141
dc.identifier.urihttp://grafar.grf.bg.ac.rs/handle/123456789/537
dc.description.abstractThe purpose of this paper is to study the individual and combined effect of upstream planform curvature and difference in bed elevations at the tributary entrance to the confluence on the flow in the confluence hydrodynamics zone. To do this, flow at right-angled confluences with three planforms and four values of bed elevation discordance ratio (Delta Z(T)/h(d)) is simulated using a three-dimensional (3D) numerical model. Three confluence planforms include confluences with the (1) straight tributary canal (Sc), (2) right bend (RB) and (3) left bend (LB) in the tributary. Four Delta Z(T)/h(d) values in the range [0.0, 0.5] include both concordant and discordant beds' confluences. Overall, nine cases with the straight main canal are considered. Special attention is paid to the flow deflection and flow separation zones since the former affects transfer of momentum from the tributary to the main canal and the latter affects transport capacity of the post-confluence channel. Comparison of the results reveals that the influence of RB in the tributary is practically negligible in comparison to the straight canal case. With the increasing difference in bed elevations between the tributary and main canals (Delta Z(T)), the presence of LB strengthens 3D flow and the structure of the recirculation zone is destroyed.en
dc.publisherIWA Publishing
dc.rightsopenAccess
dc.sourceJournal of Hydroinformatics
dc.subjectbed elevation discordanceen
dc.subject3D numerical modellingen
dc.subjectriver confluenceen
dc.subjectupstream planform curvatureen
dc.titleNumerical study of 3D flow at right-angled confluences with and without upstream planform curvatureen
dc.typearticle
dc.rights.licenseARR
dc.citation.epage1088
dc.citation.issue4
dc.citation.other15(4): 1073-1088
dc.citation.rankM22
dc.citation.spage1073
dc.citation.volume15
dc.identifier.doi10.2166/hydro.2012.150
dc.identifier.fulltexthttp://grafar.grf.bg.ac.rs//bitstream/id/3950/535.pdf
dc.identifier.rcubconv_1646
dc.identifier.scopus2-s2.0-84891798299
dc.identifier.wos000326902800003
dc.type.versionpublishedVersion


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