Role of bed elevation discordance at 90? straight-channel confluences
Апстракт
This paper aims at studying the role of difference in bed elevations between the tributary and main canals (z T) in 90 confluence under different hydrologic/hydraulic conditions. To do this, 3D finitevolume model is used. Four z T / hd values in the range [0.0, 0.5] (where hd stands for the flow depth in the main canal at the confluence) and three values of the discharge ratio DR =QMR/Qtot ={0.250, 0.583, 0.750} are considered. It is found that the: 1) increase in z T attenuates 3D flow at the confluence and enhances 3D flow in the post-confluence canal, 2) enhanced 3D flow affects the existence, size and position of the recirculation zone (RZ), 3) size of the RZ reduces as z T increases, 4) maximal shear is attained in the upper layers when z T >0 and 5) zone of τ0, max reduces and moves to the downstream junction corner as z T increases.
Извор:
River Flow 2012 - Proceedings of the International Conference on Fluvial Hydraulics, 2012, 2, 1153-1160Scopus: 2-s2.0-84867959223
Колекције
Институција/група
GraFarTY - CONF AU - Đorđević, Dejana PY - 2012 UR - https://grafar.grf.bg.ac.rs/handle/123456789/449 AB - This paper aims at studying the role of difference in bed elevations between the tributary and main canals (z T) in 90 confluence under different hydrologic/hydraulic conditions. To do this, 3D finitevolume model is used. Four z T / hd values in the range [0.0, 0.5] (where hd stands for the flow depth in the main canal at the confluence) and three values of the discharge ratio DR =QMR/Qtot ={0.250, 0.583, 0.750} are considered. It is found that the: 1) increase in z T attenuates 3D flow at the confluence and enhances 3D flow in the post-confluence canal, 2) enhanced 3D flow affects the existence, size and position of the recirculation zone (RZ), 3) size of the RZ reduces as z T increases, 4) maximal shear is attained in the upper layers when z T >0 and 5) zone of τ0, max reduces and moves to the downstream junction corner as z T increases. C3 - River Flow 2012 - Proceedings of the International Conference on Fluvial Hydraulics T1 - Role of bed elevation discordance at 90? straight-channel confluences EP - 1160 SP - 1153 VL - 2 UR - https://hdl.handle.net/21.15107/rcub_grafar_449 ER -
@conference{ author = "Đorđević, Dejana", year = "2012", abstract = "This paper aims at studying the role of difference in bed elevations between the tributary and main canals (z T) in 90 confluence under different hydrologic/hydraulic conditions. To do this, 3D finitevolume model is used. Four z T / hd values in the range [0.0, 0.5] (where hd stands for the flow depth in the main canal at the confluence) and three values of the discharge ratio DR =QMR/Qtot ={0.250, 0.583, 0.750} are considered. It is found that the: 1) increase in z T attenuates 3D flow at the confluence and enhances 3D flow in the post-confluence canal, 2) enhanced 3D flow affects the existence, size and position of the recirculation zone (RZ), 3) size of the RZ reduces as z T increases, 4) maximal shear is attained in the upper layers when z T >0 and 5) zone of τ0, max reduces and moves to the downstream junction corner as z T increases.", journal = "River Flow 2012 - Proceedings of the International Conference on Fluvial Hydraulics", title = "Role of bed elevation discordance at 90? straight-channel confluences", pages = "1160-1153", volume = "2", url = "https://hdl.handle.net/21.15107/rcub_grafar_449" }
Đorđević, D.. (2012). Role of bed elevation discordance at 90? straight-channel confluences. in River Flow 2012 - Proceedings of the International Conference on Fluvial Hydraulics, 2, 1153-1160. https://hdl.handle.net/21.15107/rcub_grafar_449
Đorđević D. Role of bed elevation discordance at 90? straight-channel confluences. in River Flow 2012 - Proceedings of the International Conference on Fluvial Hydraulics. 2012;2:1153-1160. https://hdl.handle.net/21.15107/rcub_grafar_449 .
Đorđević, Dejana, "Role of bed elevation discordance at 90? straight-channel confluences" in River Flow 2012 - Proceedings of the International Conference on Fluvial Hydraulics, 2 (2012):1153-1160, https://hdl.handle.net/21.15107/rcub_grafar_449 .