Results 191 to 200 of about 266 (220)

Analysis of pressures on a stepped spillway

Journal of Hydraulic Research, 2008
The pressure profiles on the horizontal and vertical step faces of a stepped spillway in the fully developed skimming flow region were measured. These observations allow to provide generalized equations that enable designers to analyze the amount and the location of negative pressures along the steps.
Martí Sánchez-Juny, Ernest Bladé, Josep Dolz   +2 more
openaire   +1 more source

Two-Phase Flow Characteristics of Stepped Spillways

Journal of Hydraulic Engineering, 2003
An experimental study on a large model flume with fiber-optical instrumentation indicated that minimum Reynolds and Weber numbers of about 10 and 100, respectively, are required for viscosity and surface tension effects to become negligible compared to gravitational and inertial forces expressed by Froude similitude.
Boes, Robert M., Hager, Willi H.
openaire   +5 more sources

Energy dissipation on embankment dam stepped spillways, overflow stepped weirs and masonry stepped spillways

2010
Stepped spillways are designed to increase the rate of energy dissipation on the chute reducing the size of a downstream energy dissipator. The prediction of the turbulent dissipation above the steps constitutes a critical part of the design process, especially at large discharges per unit width corresponding to the skimming flow regime.
Chanson, Hubert, Felder, Stefan
openaire   +1 more source

Recent advances in stepped spillway design

2004
New experiments were conducted in a large stepped channel with a 22 degree slope operating at large Reynolds numbers. Interactions between free-surface and cavity recirculation were systematically investigated in the skimming flow regime. Turbulence manipulation was further conducted and identical experiments were performed with 4 configurations. Basic
Chanson, H., Gonzalez, C. A.
openaire   +2 more sources

Flow regimes on stepped spillways

2001
The recent improvements of the construction techniques and the particular attention to the environment have renewed the interest in stepped spillways. New experimental investigations have been carried out at the Technical University of Bari, extending the available data on the hydraulic behaviour. The classification of flow regimes has been re-analysed,
De Marinis, G, Fratino, U, Piccinni, AF
openaire   +3 more sources

Stepped Spillways

2004
  +5 more sources

THE HYDRAULICS OF STEPPED CHUTES AND SPILLWAYS

2002
Stepped channel designs have been used for more than 3,500 years. A significant number of dams were built with overflow stepped spillways during the nineteenth and early twentieth centuries, before the design technique became outdated with the progresses in hydraulic jump stilling basin design. Recent advances in technology (e.g.
openaire   +2 more sources

Hydraulics of Stepped Spillways and Cascades [PDF]

, 1994
Stepped spillways have become a popular method for handling flood releases. The steps increase significantly the rate of energy dissipation taking place on the spillway face and reduce the size of the required downstream energy dissipation basin.
openaire  

Pressures on a stepped spillway

Journal of Hydraulic Research, 2008
André, S., Schleiss, A.J.
openaire   +2 more sources

Effect of stepped spillways on increasing dissolved oxygen in water, an experimental study

Journal of Environmental Management, 2021
Farzin Salmasi, John Abraham
exaly