Demystifying the discharge coefficient for flow over thin weirs and sills
FlowA revised derivation of the discharge coefficient for flows over thin weirs and sills in the limits of wall overflow to a free overfall is given. Using dimensional analysis, we show that the discharge coefficient, $C_{d}$ , in the classical weir ...
Joseph E. Pugh +2 more
doaj +1 more source
Holocene landslides in the Fraser Canyon Corridor and implications for ‘ecohazard’ assessment
Earth Surface Processes and Landforms, Volume 50, Issue 6, May 2025.Recent landslides affecting salmon migration in the Fraser River corridor are similar to many others that occurred during the Holocene. We propose an ‘ecohazard’ framework for determining the risk to salmon migration associated with different landslide styles throughout the Fraser River catchment.
Aaron T. Steelquist +8 more
wiley +1 more source
Sediment transport through self-adjusting, bedrock-walled waterfall plunge pools [PDF]
, 2016 Many waterfalls have deep plunge pools that are often partially or fully filled with sediment. Sediment fill may control plunge-pool bedrock erosion rates, partially determine habitat availability for aquatic organisms, and affect sediment routing and ...
Lamb, Michael P., Scheingross, Joel S.
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Anchor chains—A simple low‐cost device to assist passage of small‐bodied mass fish
River Research and Applications, Volume 40, Issue 10, Page 1954-1970, December 2024.Abstract Attention has been placed on a variety of barriers that hinder fish passage in modern times. The most prevalent fish barriers were culverts which have negatively impacted waterway connectivity and fish habitats. For small‐bodied mass fish, high barrel velocities and turbulence have reduced fish swimming performance because of their weak ...
Jason Harley +2 more
wiley +1 more source
Interfacial Aeration and Bubble Count Rate Distributions in a Supercritical Flow Past a Backward-Facing Step [PDF]
, 2008 An example of high-velocity open channel flows is a supercritical flow past an abrupt drop. In such a geometry, the basic air-water flow properties were measured, including distributions of void fraction and bubble count rate, and local air and water ...
Brocchini +6 more
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Estimating critical depth and discharge over sloping rough end depth using machine learning
Journal of HydroinformaticsThis study uses machine learning (ML) to predict the end-depth structure's discharge and critical depth (yc). Linear regression, M5P, random forest, random tree, reduced error pruning tree, and Gaussian process (GP) are the ML methods used in this ...
Ahmed Y. Mohammed, Parveen Sihag
doaj +1 more source
The Hydraulics of Stepped Chutes and Spillways [PDF]
, 2002 The stepped channel design have been used for more than 3,500 years (chapter 2). A significant number of dams were built with overflow stepped spillways during the 19th century and early 20th century, before the design technique became outdated with the ...
Chanson, Hubert
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Investigation of the free overfall for discharge measurement in stone bed triangular channels
Ain Shams Engineering JournalThis study utilizes the freefall as a simple and useful tool for measuring end depth discharge EDD in triangular channels having stone beds. For this task, forty-five triangular channel models are constructed and examined all having 360 cm length and end
Bahzad Mohammad Ali Noori +1 more
doaj +1 more source
Free-surface profiles, velocity and pressure distributions on a broad-crested weir: a physical study [PDF]
, 2012 Basic experiments were conducted on a large-size broad-crested weir with a rounded corner. Detailed free-surface, velocity, and pressure measurements were performed for a range of flow conditions.
Bakhmeteff B. A. +11 more
core +1 more source
Weserübung: Det perfekte strategiske overfall? [PDF]
, 1990 I amerikansk forskningslitteratur er det lenge blitt hevda at «strategiske overfall» alltid vil lykkast. Dette gjeld jamvel om informasjonane på førehand - etterretningsmaterialet - inneheld korrekte varsel om kvasom er i emning.
Riste, Olav
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