Publications associées à Contrôle des alluvions

Effect of Aging on the Stability of Microbially Reduced Uranium in Natural Sediment

Rizlan Bernier-Latmani, Barbora Bártová, Yuheng Wang, Luca Loreggian, Sophie Louise Bretagne, Agnès Novotny

Reductive immobilization of uranium has been explored as a remediation strategy for the U-contaminated subsurface. Via the in situ biostimulation of microbial processes, hexavalent U is reduced to less soluble tetravalent species, which are immobilized wit ...

2019

Integrated sediment management of alpine rivers

Giovanni De Cesare, Christian Mörtl

Sediment management of alpine rivers is crucial to ensure sustainable hydropower production. Dams inhibit not only biological consistency but also drastically restrain natural sediment dynamics. Upstream of the dam, coarse material is accumulated, leading ...

2019

Multiscale Modeling and Simulation of Erosive Wear in Pelton Turbines

Sebastián Camilo Leguizamón Sarmiento

Hydropower has been identified as a key technology to mitigate climate change due to its very low lifecycle greenhouse gas emission intensity and its capacity to integrate intermittent renewable energy sources such as wind and solar into the electrical gri ...

EPFL2019

Biomorphological scaling laws from convectively accelerated streams

Paolo Perona, Giulio Calvani, Coralie Schick

Worldwide convectively accelerated streams flowing in downstream-narrowing river sections show that riverbed vegetation growing on alluvial sediment bars gradually disappears, forming a front beyond which vegetation is absent. We revise a recently proposed ...

2019

Sediment replenishment combined with an artificial flood improves river habitats downstream of a dam

Anton Schleiss, Mário Jorge Rodrigues Pereira Da Franca, Severin Stähly, Christopher Robinson

River reaches downstream dams where a constant residual flow discharge is imposed, often lack sediment supply and periodic inundation due to the absence of natural flood events. In this study, a two-year return flood was released from an upstream reservoir ...

2019

Multiscale Simulation of the Hydroabrasive Erosion of a Pelton Bucket: Bridging Scales to Improve the Accuracy

François Avellan, Ebrahim Jahanbakhsh, Audrey Paulette Solange Maertens, Sebastián Camilo Leguizamón Sarmiento, Siamak Alimirzazadeh

Erosive wear of hydraulic machines is a common issue, which results in efficiency degradation, the enhancement of cavitation, and the need for expensive maintenance. Although numerical simulations of the erosion process could be very useful, both for under ...

2019

Design optimization of permeable sediment traps for fluvial bed load transport

Anton Schleiss, Sebastian Schwindt, Mona Jafarnejad Chaghooshi, Anita Hélène Roth

Sediment traps are crucial elements for flood protection in mountain rivers with high sediment transport capacity. Existing structures often interrupt the channel connectivity. Ideally, a sediment trap should be permeable for bed load during non-hazardous ...

2018

Floating modular unit for controlled sediment flushing regarding sediment size and concentration

Giovanni De Cesare

Sediment management is a challenging discipline, especially in regions where the storage capacity of reservoirs decreases due to sediment accumulation. This paper shows an innovative and holistic modular technical approach to the problem, considering a gre ...

ed. Hydropower&Dams, Aqua Media International2018

Sediment traps with guiding channel and hybrid check dams improve controlled sediment retention

Mário Jorge Rodrigues Pereira Da Franca, Sebastian Schwindt, Stefano Tugulu, Alessandro Reffo

Sediment traps with partially open check dams are crucial elements for flood protection in alpine regions. The trapping of sediment is necessary when intense sediment transport occurs during floods that may endanger urban areas at downstream river reaches. ...

2018

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Contrôle des alluvions

Effect of Aging on the Stability of Microbially Reduced Uranium in Natural Sediment

Integrated sediment management of alpine rivers

Hydraulic-morphological habitat assessment in rivers considering residual flow, sediment replenishment and artificial flood events

Multiscale Modeling and Simulation of Erosive Wear in Pelton Turbines

Biomorphological scaling laws from convectively accelerated streams

Sediment replenishment combined with an artificial flood improves river habitats downstream of a dam

Multiscale Simulation of the Hydroabrasive Erosion of a Pelton Bucket: Bridging Scales to Improve the Accuracy

Design optimization of permeable sediment traps for fluvial bed load transport

Floating modular unit for controlled sediment flushing regarding sediment size and concentration

Sediment traps with guiding channel and hybrid check dams improve controlled sediment retention

Graph Chatbot

Chattez avec Graph Search

Effect of Aging on the Stability of Microbially Reduced Uranium in Natural Sediment

Integrated sediment management of alpine rivers

Floating modular unit for controlled sediment flushing regarding sediment size and concentration

Sediment replenishment combined with an artificial flood improves river habitats downstream of a dam

Sediment traps with guiding channel and hybrid check dams improve controlled sediment retention

Hydraulic-morphological habitat assessment in rivers considering residual flow, sediment replenishment and artificial flood events

Multiscale Modeling and Simulation of Erosive Wear in Pelton Turbines

Biomorphological scaling laws from convectively accelerated streams

Multiscale Simulation of the Hydroabrasive Erosion of a Pelton Bucket: Bridging Scales to Improve the Accuracy

Design optimization of permeable sediment traps for fluvial bed load transport