Show simple item record

dc.contributorRamyar, Kambiz
dc.creatorĐorđević, Dejana
dc.date.accessioned2021-03-09T10:27:09Z
dc.date.available2021-03-09T10:27:09Z
dc.date.issued2018
dc.identifier.urihttps://grafar.grf.bg.ac.rs/handle/123456789/2294
dc.description.abstractThe paper studies the effect of bed elevation discordance on the hydrodynamics in fixed-bed open channel confluences where the tributary channel is narrower than the main channel and where the flow is subcritical. The study is inspired by two facts: 1) that the main river is wider than the tributary in majority of cases and 2) that the bed elevation discordance is a usual morphological feature in alluvial river confluences. To this aim nine confluence layouts with three channel width ratios BT / BMR = {1.00, 0.75, 0.50} and three extents of bed elevation discordance ΔzT / hd = {0.10, 0.25, 0.50} are analysed under the three possible hydrological scenarios defined by the discharge ratio values DR = QMR / Qtot ={0.250, 0.583, 0.750}. It is found that: 1) the tributary flow acts as a jet when DR = 0.250 regardless of the BT / BMR and ΔzT / hd values, 2) the recirculation zone with several vortices exists throughout the flow depth when DR = 0.250 and BT < BMR, 3) the primary vortex is shifted farther downstream and the secondary one is inclined and attached to the boundary streamline, 4) the strong shear exists both in the horizontal and vertical planes and 5) the shear layer is developed on each side of the inclined recirculation zone.sr
dc.language.isoensr
dc.publisherEGE University, Izmir, Turkeysr
dc.relationinfo:eu-repo/grantAgreement/MESTD/Technological Development (TD or TR)/37009/RS//sr
dc.relationinfo:eu-repo/grantAgreement/MESTD/Technological Development (TD or TR)/37010/RS//sr
dc.rightsopenAccesssr
dc.sourceProceedings of 13th International Congress on Advances in Civil Engineeringsr
dc.subjectriver confluencesr
dc.subjectbed elevation discordancesr
dc.subjectchannel width ratiosr
dc.subject3D numerical modelsr
dc.titleOn the effect of bed elevation discordance in confluences with unequal channel widthssr
dc.typeconferenceObjectsr
dc.rights.licenseARRsr
dc.rights.holderDejana Đorđevićsr
dc.citation.epage8
dc.citation.spage1/84693
dc.description.otherZbornik radova je izdat na USB memoriji i nema ISBN brojsr
dc.identifier.fulltexthttp://grafar.grf.bg.ac.rs/bitstream/id/9152/ACE2018-DejanaDjordjevic.pdf
dc.type.versionpublishedVersionsr


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record