Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Performance evaluation of bendway weirs with sloped and flat crest in mild and sharp bends
The main aim of the present experimental study was to investigate the performance of bendway weirs (BWs) in large-scale channel bends with three different relative curvatures (i.e. the ratio of central-bend radius to top channel width). The geometry of BWs (such as inclination angle, length, and spacing) was chosen based on the state-of-the-art of design criteria. However, the significance of important hydraulic geometry (crest slope) was also examined in these different bends. The results indicate that the performance of sloped crest weirs in protecting the concave bend erosion was better and worse in moderate and sharp bends, respectively, compared to flat crest. Bendway weirs with horizontal crest and submergence ratio of 0.7 are found to be the most efficient in developing sediment deposition near the outer bank, even in sharp bends.
Performance evaluation of bendway weirs with sloped and flat crest in mild and sharp bends
The main aim of the present experimental study was to investigate the performance of bendway weirs (BWs) in large-scale channel bends with three different relative curvatures (i.e. the ratio of central-bend radius to top channel width). The geometry of BWs (such as inclination angle, length, and spacing) was chosen based on the state-of-the-art of design criteria. However, the significance of important hydraulic geometry (crest slope) was also examined in these different bends. The results indicate that the performance of sloped crest weirs in protecting the concave bend erosion was better and worse in moderate and sharp bends, respectively, compared to flat crest. Bendway weirs with horizontal crest and submergence ratio of 0.7 are found to be the most efficient in developing sediment deposition near the outer bank, even in sharp bends.
Performance evaluation of bendway weirs with sloped and flat crest in mild and sharp bends
Salehzadeh, M. (Autor:in) / Hemmati, M. (Autor:in) / Yasi, M. (Autor:in) / Lanzoni, S. (Autor:in)
ISH Journal of Hydraulic Engineering ; 30 ; 601-611
19.10.2024
11 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Erosion , scour depth , point-bar , bend
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