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On the combined effect of bed elevation discordances in the main-river and the tributary in 90° straight-channel confluences
dc.creator | Đorđević, Dejana | |
dc.creator | Stojnić, Ivan | |
dc.date.accessioned | 2019-04-19T14:25:07Z | |
dc.date.available | 2019-04-19T14:25:07Z | |
dc.date.issued | 2016 | |
dc.identifier.uri | https://grafar.grf.bg.ac.rs/handle/123456789/748 | |
dc.description.abstract | The role of the difference in bed elevations in the main-river (ΔzMR) and the tributary (ΔzT) at their entrance to a 90° straight-channel confluence is studied numerically using a 3D finite-volume model. Three characteristic hydrological scenarios with DR = QMR/Qtot = {0.250, 0.583, 0.750} (where QMR and Qtot are flow discharges in the main-river upstream and downstream of the confluence, respectively) are analysed in nine confluence layouts having ΔzMR/hd ε[0.10, 0.50] and ΔzT/hd ε[0.10, 0.50] (where hd stands for the flow depth in the deeper channel at the confluence). It is found that the presence of the bed-step in the main river: 1) does not affect the flow and bed shear stress distributions for DR = 0.250, 2) causes inclination of the recirculation zone and reduces its size for DR > 0.5, 3) favours conditions for the bed-load transport both in and far downstream of the confluence when DR ≠ 0.750 regardless of the ΔzT-value. | en |
dc.publisher | CRC Press/Balkema | |
dc.rights | restrictedAccess | |
dc.source | River Flow - Proceedings of the International Conference on Fluvial Hydraulics, RIVER FLOW 2016 | |
dc.title | On the combined effect of bed elevation discordances in the main-river and the tributary in 90° straight-channel confluences | en |
dc.type | conferenceObject | |
dc.rights.license | ARR | |
dc.citation.epage | 1625 | |
dc.citation.other | : 1616-1625 | |
dc.citation.spage | 1616 | |
dc.identifier.rcub | https://hdl.handle.net/21.15107/rcub_grafar_748 | |
dc.identifier.scopus | 2-s2.0-85015333169 | |
dc.type.version | publishedVersion |
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