Publications related to Knickpoint

Multiscale simulation of erosive wear in a prototype-scale Pelton runner

François Avellan, Ebrahim Jahanbakhsh, Sebastián Camilo Leguizamón Sarmiento, Siamak Alimirzazadeh

The technical capacity to predict the erosion process is instrumental for the optimization of the runner designs and operation strategies of hydroelectric plants. A multiscale model of erosion recently formulated by the authors and validated on a laborator ...

2020

Rock strength properties of granitic rocks in Yosemite Valley, Yosemite National Park, California

Federica Sandrone, Michel Jaboyedoff

Yosemite National Park, located in the central part of California’s Sierra Nevada mountains, is a glacially carved landscape filled with iconic rock formations such as Cathedral Peak, El Capitan, and Half Dome. Igneous rocks, consisting primarily of variat ...

U.S. Geological Survey2020

Simulation of the hydroabrasive erosion of a bucket: A multiscale model with projective integration to circumvent the spatio-temporal scale separation

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

The hydroabrasive erosion of hydraulic machine components, especially Pelton buckets and needles, is a widespread problem that entails significant costs. The multiscale nature of the process renders its simulation very computationally demanding unless spec ...

IOP PUBLISHING LTD2019

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

Landscape Evolution Model at the Flume Scale

David Andrew Barry, Andrea Rinaldo, Mohsen Cheraghi

Landscape evolution models (LEMs) refer to a class of models that simulate key features of network structures at the catchment scale, along with runoff and sediment deposition. Such models can reproduce landscape features as captured by different (statisti ...

2017

Morpho-dynamics of mountain streams: from laboratory experiments to field observations.

Christophe Ancey, Stuart Nicholas Lane, François Mettra

Due to the complexity of mountain stream evolution and its causes, it is judicious to conduct flume experiments to better understand the morpho-dynamics of steep river channels. A series of long-term experiments under steady conditions revealed the high in ...

2017

Sediment replenishment: Influence of the geometrical configuration on the morphological evolution of channel-bed

Anton Schleiss, Mário Jorge Rodrigues Pereira Da Franca, Elena Battisacco

Dams trap sediment in the upstream reservoir, which may lead to river bed armoring, streambank erosion and failure, channel incision and reduction of the morphological diversity in the downstream river reaches. The replenishment of sediment is a mitigation ...

American Geophysical Union2016

Influence of consecutive sediment replenishment on channel bed morphology

Anton Schleiss, Mário Jorge Rodrigues Pereira Da Franca, Elena Battisacco, Lena Bösch

Dams interrupt the longitudinal connectivity of a river as they store water and trap sediment. When transport capacity downstream of dams exceeds sediment supply, water becomes hungry and channel incision, bed armouring and reduction of morphological diver ...

2016

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Knickpoint

Fractal analysis in the quantification of medical imaging associated with multiple sclerosis pathology

Multiscale simulation of erosive wear in a prototype-scale Pelton runner

Rock strength properties of granitic rocks in Yosemite Valley, Yosemite National Park, California

Simulation of the hydroabrasive erosion of a bucket: A multiscale model with projective integration to circumvent the spatio-temporal scale separation

Multiscale Modeling and Simulation of Erosive Wear in Pelton Turbines

Geomorphic work by gravity currents with varying initial conditions

Landscape Evolution Model at the Flume Scale

Morpho-dynamics of mountain streams: from laboratory experiments to field observations.

Sediment replenishment: Influence of the geometrical configuration on the morphological evolution of channel-bed

Influence of consecutive sediment replenishment on channel bed morphology

Graph Chatbot

Chat with Graph Search

Simulation of the hydroabrasive erosion of a bucket: A multiscale model with projective integration to circumvent the spatio-temporal scale separation

Rock strength properties of granitic rocks in Yosemite Valley, Yosemite National Park, California

Sediment replenishment: Influence of the geometrical configuration on the morphological evolution of channel-bed

Multiscale simulation of erosive wear in a prototype-scale Pelton runner

Geomorphic work by gravity currents with varying initial conditions

Multiscale Modeling and Simulation of Erosive Wear in Pelton Turbines

Morpho-dynamics of mountain streams: from laboratory experiments to field observations.

Fractal analysis in the quantification of medical imaging associated with multiple sclerosis pathology

Landscape Evolution Model at the Flume Scale

Influence of consecutive sediment replenishment on channel bed morphology