Results 41 to 50 of about 435 (189)

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

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

Experimental Study on the Performance of Three Vertical Axis Hydrokinetic Turbines

International Journal of Energy Research, Volume 2026, Issue 1, 2026.
Vertical‐axis hydrokinetic turbines have shown remarkable potential as a renewable energy option. However, their hydrodynamic performance remains uncategorized under turbulent, sedimented river flow conditions. This study presents a thorough and systematic experimental investigation to understand the impact of induced flow dynamics on three primary ...
Derya Karakaya, Songül Karakaya, Bülent Çağlar Özcan, Yasemin Eldayih Kanber, Sebnem Elçi, Cheng Du   +5 more
wiley   +1 more source

Effect of the hydraulic conditions and structure geometry on mathematical modelling of discharge coefficient for duckbill and oblique weirs [PDF]

علوم و مهندسی آبیاری, 2016
Weirs are one the most important hydraulic structures for flow control, water measurement and regulating of upstream water elevation in canals, irrigation networks and rivers. For a given of channel width, duckbill and oblique weirs have longer effective
Pardis Nikpiek, Seyed Mahmoud Kashefipour   +1 more
doaj   +1 more source

Analysis of the water flow in rectangular open channel flume with rectangular sharp crested weir [PDF]

, 2013
The sharp-crested weir is the most commonly used device in channels for flow measurement and flow regulation due to its simplicity. Several attempts have been made to study in detail the flow over different shapes of normal conventional weirs including ...
Muhammad Norkhuzairi, Shaharin
core  

Hydrodynamic Removal of Sediments in Open Irrigation Channel

Modern Agriculture, Volume 3, Issue 2, December 2025.
The experimental study investigated the hydraulic behaviour of particle transport in an irrigation channel equipped with submerged longitudinal structures designed to reduce the effective cross‐sectional area. The findings demonstrate that the placement of parallel barriers along the flow axis generates localized acceleration and turbulence, which ...
Israel E. Herrera‐Díaz, Rosario Martínez‐Yáñez, Edith A. Gamiño‐Ramírez, César Gutiérrez‐Vaca   +3 more
wiley   +1 more source

Assessment of Scour Depth Downstream of Sharp Crested Weirs: An Experimental Study

Journal of Engineering
Weirs are hydraulic structures built across open channels to measure the flow and raise the water level. A sharp-crested weir is one type of weir of different configurations.
Israa A. Mohammed Jawad, Thamer Ahmad Mohammad   +1 more
doaj   +1 more source

Dogs of War: The Effect of War‐Inflicted Environmental Damage on Free‐Ranging Domestic Dogs

Evolutionary Applications, Volume 18, Issue 12, December 2025.
ABSTRACT Wars impose unprecedented environmental damage that has rarely been studied in real time. Domestic dogs are an accessible model species during war times, because they enable data collection without specialised equipment and skills, which can be performed without creating additional danger to humans or animals involved.
Mariia Martsiv, Ihor Dykyy, Małgorzata Witek, Piotr Chibowski, Giulia Cimarelli, Andre E. Moura, Małgorzata Pilot   +6 more
wiley   +1 more source

Determination of flow characteristics over sharp-crested triangular plan form weirs using numerical simulation

Water Science, 2023
Triangular plan form weirs are one type of long-crested weirs. Therefore, they can pass more discharge capacity than weirs at the given channel width. This study aims to investigate the effects of different number of teeth (3, 4, and 5 teeth), angle of ...
Rasoul Daneshfaraz, Reza Norouzi, John Patrick Abraham, Parisa Ebadzadeh, Behnaz Akhondi, Maryam Abar   +5 more
doaj   +1 more source

Experimental Coefficient of Discharge for Leaky Woody Dams in Clear Water Conditions

Journal of Flood Risk Management, Volume 18, Issue 4, December 2025.
ABSTRACT Natural flood management (NFM) uses natural features and processes to manage flood risk. Although natural processes in river flow are well known, their use to manage floods has been only deeply analyzed since recent years, and the hydraulic behavior and performance of some measures is not yet fully understood.
Pedro Martin‐Moreta, Oscar Herrera‐Granados, Reuben Bourne, Thomas Curwel, Richard Body, Marta Roca‐Collel   +5 more
wiley   +1 more source