Results 31 to 40 of about 47,584 (240)
Numerical Simulation of Air Entrainment in Stepped Spillways [PDF]
, 2022 Existing methods to simulate air entrainment in stepped spillways are based on a sub-grid air-entrainment function that accounts for the incorporation of air through the air-water interface; a transport equation for the bubbly phase is then solved inside
Zabaleta, F. +2 more
core +1 more source
Stepped spillway with pre-aeration by a deflector: flow characteristics
RBRH, 2020 Stepped spillways aim to dissipate part of the upstream energy during the flow passage by the chute. However, the use of these structures is limited to a restrict range of specific discharges due to the risk of cavitation damage.
Carolina Kuhn Novakoski +5 more
doaj +1 more source
Stepped spillway flows and air entrainment [PDF]
Canadian Journal of Civil Engineering, 1993 Stepped spillways have become a popular method for handling flood releases. The steps significantly increase the rate of energy dissipation taking place on the spillway face and reduce the size of the required downstream energy dissipation basin. The compatibility of stepped spillways with roller compacted concrete and gabion construction techniques ...
openaire +4 more sources
Pressure distributions of stepped spillways with different horizontal face angles
, 2018 Stepped spillways are commonly used in hydropower engineering, landscape irrigation and aeration tanks due to their high energy dissipation and superior aeration.
Zhaoliang Bai +2 more
core +1 more source
Stepped Spillway as an Energy Dissipater [PDF]
Canadian Water Resources Journal / Revue canadienne des ressources hydriques, 2004 This paper describes an experimental investigation into the hydraulics of ogee-profile stepped spillways, examines their viability as an alternative to smooth-back spillways and investigates their efficiency in reducing the downstream energy and length of the hydraulic jump.
Chatila, Jean G., Jurdi, Bassam R.
openaire +2 more sources
Effect of Height and Geometry of Stepped Spillway on Inception Point Location
Applied Sciences, 2019 Air entrainment in a stepped spillway is very important to protect the spillway from cavitation damage. The inception point is the location where air starts entering the non-aerated flow zone. The inception point location depends on different parameters,
Wuyi Wan, Awais Raza, Xiaoyi Chen
doaj +1 more source
RBRH, 2018 Stepped spillways have been widely used for flood runoff due to of their constructive advantages and in regards to energy dissipation during the drop, allowing downstream dissipation structures to be designed in smaller dimensions.
Fabrício Machado Osmar +5 more
doaj +1 more source
The hydraulics of flow on stepped ogee-profile spillways.
, 1997 Because of its simple form, its effectiveness as an energy dissipator, and its contribution to dam stability, the stepped spillway is one of the oldest drop structure used in the construction of small dams.
Azhdary Moghaddam, Mehdi.
core +1 more source
Stepped and smooth spillways: resistance effects on stilling basin lengths
, 2010 The Darcy-Weisbach equation was used in the analysis of flow over spillways, furnishing theoretical tools to design stilling basins. Predictions for the length of hydraulic jump stilling basins downstream of stepped and smooth spillways are presented ...
SIMOES, Andre Luiz Andrade +5 more
core +1 more source
Pediatric Blood &Cancer, EarlyView.ABSTRACT As part of the European Cooperative Study Group for Paediatric Rare Tumours initiative, we developed standard clinical practice guidelines for ovarian sex cord stromal tumors, based on comprehensive national and international cohort analyses, literature review, and a final expert consensus conference.
Dominik T. Schneider +15 more
wiley +1 more source