Scouring Depth Assessment Downstream of Weirs Using Hybrid Intelligence Models
Applied Sciences, 2020 Considering the scouring depth downstream of weirs is a challenging issue due to its effect on weir stability. The adaptive neuro-fuzzy inference systems (ANFIS) model integrated with optimization methods namely cultural algorithm, biogeography based ...
Ahmad Sharafati +5 more
doaj +1 more source
Experimental comparison of discharge coefficient of A-type piano key and labyrinth side weirs with different heights [PDF]
Journal of Applied Research in Water and WastewaterHydraulic structures have a long history, with weirs being among the earliest developed; a notable example of these is the side weir. Side weirs are of different shapes, including a nonlinear weir installed on the dam crest.
Saeid Jeddi, Jalal Sadeghian
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Discharge coefficient of broad-crested weirs as a function of the relative weir height for different weir lengths [PDF]
Theory and Building Practice, 2020 Broad-crested weirs (BCW) are often used in hydraulic engineering and water management. The most complex factor that affects the discharge capacity of BCW is the discharge coefficient. In Ukrainian engineering practice, the flow rate of BCW is defined as a function of the relative height of the spillway wall, while in the most common European methods –
Volodymyr Zhuk +4 more
openaire +2 more sources
Scour in Stone Beds Downstream Weirs and Compound Gates [PDF]
Kirkuk Journal of Science, 2010 In the present investigation, a laboratory study of scour characteristics downstream weirs, compound gates has been conducted. The study included the measurement of maximum scour depth and the length of scour hole downstream these structures.
Ahmad A. Ahmed +2 more
doaj +1 more source
Numerical Study of Flow Characteristics Over Pivot Weirs [PDF]
Journal of Hydraulic Structures, 2022 Pivot weirs have a lifting mechanism to change the weir angle relative to the channel bed. These are installed across the waterways in the form of multiple weirs in a row. The water level will be adjusted by changing the weir angle.
Bijan Khatamipour +3 more
doaj +1 more source
Comparative Study of the Discharge Coefficient of Streamlined Weirs [PDF]
Journal of Hydraulic and Water EngineeringNowadays, streamlined weirs including circular crested weirs and hydrofoil weirs have been introduced as the weirs with high discharge coefficient (Cd).
Abbas Parsaie +2 more
doaj +1 more source
Performance Against Cavity Index and Discharge Coefficient between Broad and Sharp Crested Weirs
Polytechnic Journal, 2021 The purpose of this research is examining the performance of rectangular broad and sharp crested weirs in terms of cavity index and discharge coefficient. For this purpose, a computational fluid dynamics CFD code FLUENT is applied.
Abdulla A. Abo
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The Effect of Combination of Footing and Triangular Weirs on Bed Topography in a 90º Mild Bend [PDF]
علوم و مهندسی آبیاری, 2015 Triangular weirs (Triangular vanes) and footing are measures which causes to control the scour in outer bend and keep out scouring hole from the outer bend.
Mohammad Bahrami Yarahmadi +2 more
doaj +1 more source
Investigating the Efficiency of Trapezoidal Labyrinth Weirs with Equal and Unequal Indentation Lengths [PDF]
پژوهشهای زیرساختهای عمرانی, 2023 Weirs are one of the most important hydraulic structures used in dams, which are built for safe discharge of flood flows. In order to increase the weir discharge capacity, labyrinth weirs are used in small openings.
Jalal Sadeghian, Ali Yari, Hadi Norouzi
doaj +1 more source
Introducing the T-shaped weir: a new nonlinear weir
Water Supply, 2021 Abstract In the present study, a new nonlinear weir called the T-shaped weir (TSW), which is a combination of the labyrinth weir (LW) and the piano key weir (PKW), was introduced, and its hydraulic performance was compared with the PKW. Based on the presence of the vertical walls at the inlet key, outlet key, or both keys, the TSW weirs ...
Behzad Noroozi +2 more
openaire +4 more sources