Results 31 to 40 of about 1,034 (154)

Discharge coefficient of flow over Al-Shalalat stepped weir on Al-Khusr River

Applied Water Science, 2021
Many hydraulic structures are constructed in an open channel according to the purposes and the nature of the region. Weir is one of these structures which is used for discharge measurements as well as rising water depth in irrigation channels.
Azza N. Altalib
doaj   +1 more source

Prediction of the discharge coefficient of steeply crested inclined weirs using different neural network techniques

NTU Journal of Engineering and Technology, 2023
The main objective of this work is to accurately predict in irrigation and hydraulic systems the discharge coefficient of the used sharp-crested inclined dams.
Adnan A. Ismael, Abdulnaser A. Ahmed, Raid Rafi Omar Al-Nima, Mohammed Khaire Hussain   +3 more
doaj   +1 more source

Sharp-crested weir head losses investigation

, 2018
The work is devoted to the rectangular sharp-crested weir calculation methods improvement. This can be realized by using mathematical model developed on energy and momentum conservation principles.
Korniichuk, V., Bezusyak, O., Yasinska, L., Khlapuk, M.   +3 more
core   +1 more source

Investigation of Effective Parameters on Discharge Coefficient of Compound Arched Circular-Rectangular Sharp-Crested Weirs

مجله آب و خاک, 2016
Introduction: The compound sharp-crested weirs are composed from several notches and those are designedin different shapes. One of the hydraulic advantagesof compound weirs is that atlowflow rate, the bottomnotchacts assimpleweir andwith the creation of ...
S.N. Mousavi, D. Farsadizadeh, H. Arvanaghi, A. Abbaspour   +3 more
doaj   +1 more source

Coefficients of Discharge of Submerged Sharp-crested weirs

Transactions of the Japan Society of Mechanical Engineers, 1953
According to our viewpoint that the submerged weirs will be a submerged orifice, we gave a formula of coefficient of discharge of submerged sharp-creasted weirs. The result was compared with those obtained by many methods, i.e., "du Buat", "Wisconsin", "Fteley & Stearns", "Francis", "Herschel" and "Bazin".
ITAYA, Syoju, TAKENAKA, Toshio
openaire   +2 more sources

Optimized Mesh Zoning for Dam Bottom Outlet CFD Simulations Using Richardson Extrapolation and Grid Convergence Analysis

Engineering Reports, Volume 8, Issue 6, June 2026.
A Richardson‐extrapolation–based mesh zoning framework is developed to optimize CFD simulation accuracy and computational efficiency in dam bottom outlet flows. Using six mesh scenarios and multi‐parameter convergence analysis (pressure, velocity, TKE), the method identifies an optimal fine‐resolution zone around the gate and progressively coarser ...
Mohammad Masoud Vaseti, Ali Akbar Akhtari, Reza Tarinejad   +2 more
wiley   +1 more source

River Meander Development by Bar‐Push and Bank‐Pull During Cyclic Hydrographs in a Field‐Scale Experimental Channel

Water Resources Research, Volume 62, Issue 5, May 2026.
Abstract Gravel‐bed rivers widen and narrow as bar‐push and bank‐pull wax and wane through individual floods, yet over decades the channel often holds near constant width, evidence of coupling between inner‐bank deposition and outer‐bank erosion. Because large, event‐scale data sets are scarce and most field rivers have mixed grain‐size beds, the ...
Basem M. M. Mahmoud, Mélanie Trudel, Pascale M. Biron, Leonard S. Sklar, Jay Lacey   +4 more
wiley   +1 more source

Quantifying and Regionalizing Land Use Impacts on Catchment Response Times With High‐Frequency Observations

Water Resources Research, Volume 62, Issue 2, February 2026.
Abstract Land use and land cover change (LUCC) can affect the hydrological response time of rivers. However, it is difficult to generate robust and quantitative evidence of this impact at the catchment scale. This lack of evidence also affects the development of rainfall‐runoff models to make ex‐ante predictions.
Anthony C. Ross, Boris Ochoa‐Tocachi, Vivien Bonnesoeur, Braulio Lahuatte, Paola Fuentes, Javier Antiporta, Mauricio F. Villazon, Wouter Buytaert   +7 more
wiley   +1 more source

Discharge Coefficient of Contracted Rectangular Sharp-Crested Weirs, an Experimental Study

Journal of Engineering, 2023
An experimental study is made here to investigate the discharge coefficient for contracted rectangular Sharp crested weirs. Three Models are used, each with different weir width to flume width ratios (0.333, 0.5, and 0.666).
Rafea Hashim Shakir Al-Suhili, Rizgar Karim, Wazira Ezzat Qadir Qadir   +2 more
doaj   +1 more source

Hybrid statistical‐machine learning approach for analyzing legacy and new phosphorus losses from subsurface drainage systems

Journal of Environmental Quality, Volume 55, Issue 1, January/February 2026.
Abstract Phosphorus (P) is essential for crop growth but leaches through subsurface drainage discharge, impacting water quality. This study's objectives are to (1) apply hybrid statistical‐machine learning to quantify the contributions of incidental (new) and legacy (old) P in drainage discharge from organic site and inorganic site and (2) evaluate the
Emeka Aniekwensi, Ehsan Ghane
wiley   +1 more source