Publications associées à Gravier (granulat)

Coherent structures in open channel flows with bed load transport over an hydraulically rough bed

Excess sediment production in the upper parts of catchments may result in important impacts over morphodynamics of gravel bed-rivers. By changing morphodynamics, sediment overfeeding may induce important changes in the structure of near-bed flow, mainly in ...

CRC Press/Balkema2014

Quadrant Analysis of Shear Events in Open Channel Flows Over Mobile and Immobile Hydraulically Rough Beds

Mário Jorge Rodrigues Pereira Da Franca

Sediment overfeeding may induce important changes in the structure of the near-bed region of gravel-bed river flows, mainly in what concerns exchange of momentum and mass between the flow within the riverbed roughness elements and the flow in the upper reg ...

2014

Ecomorphodynamics of rivers with converging boundaries

Paolo Perona, Benoît Crouzy, Peter Molnar

Many rivers worldwide show converging sections where a characteristic limiting front for vegetation establishment on gravel bars is observed. An important conceptual model was advanced in 2006 by Gurnell and Petts, who demonstrated that for the convergent ...

Wiley-Blackwell2014

Tracking bed load particles in a steep flume: Methods and results.

Christophe Ancey, Joris Heyman

In this paper, we present an experimental study about the motion of bed load particles in water. Recent developments in the stochastic theory of bed load transport call for precise experimental data to validate the models. We set up the experiment in a til ...

CRC Press / Balkema - Taylor & Francis Group2014

The hydro-morphological index of diversity: a tool for describing habitat heterogeneity in river engineering projects

Anton Schleiss, Walter Gostner

We present a new hydro-morphological index of diversity (HMID), a tool aimed for use in river engineering projects and firstly developed at gravel-bed streams in Switzerland, but intended for a broader use. We carried out field work with extensive hydrauli ...

Springer2013

Shear velocity estimates in rough-bed open-channel flow

Ulrich Lemmin, Fereshteh Bagherimiyab Hunkeler

Shear velocity u(*) is an important parameter in geophysical flows, in particular with respect to sediment transport dynamics. In this study, we investigate the feasibility of applying five standard methods [the logarithmic mean velocity profile, the Reyno ...

Wiley-Blackwell2013

Numerical determination of the tensile response and the dissipated fracture energy of concrete: role of the meso-structure and inﬂuence of the loading rate

Jean-François Molinari, Leonardo Snozzi, Fabrice Gatuingt

At the mesoscopic scale, concrete can be considered as a mix of coarse aggregates with a mortar paste matrix. In this paper, we investigate numerically the influence of aggregates arrangements and loading rate on the tensile response of concrete. Each coar ...

Wiley-Blackwell2013

Numerical determination of the tensile response and the dissipated fracture energy of concrete: role of the mesostructure and influence of the loading rate

Jean-François Molinari, Leonardo Snozzi, Fabrice Gatuingt

Wiley-Blackwell2013

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Gravier (granulat)

Coherent structures in open channel flows with bed load transport over an hydraulically rough bed

Quadrant Analysis of Shear Events in Open Channel Flows Over Mobile and Immobile Hydraulically Rough Beds

Ecosystem respiration increases with biofilm growth and bed forms: Flume measurements with resazurin

Ecomorphodynamics of rivers with converging boundaries

Tracking bed load particles in a steep flume: Methods and results.

The hydro-morphological index of diversity: a tool for describing habitat heterogeneity in river engineering projects

Bedload transport powered by daily floods: unsteadiness and stochasticity.

Shear velocity estimates in rough-bed open-channel flow

Numerical determination of the tensile response and the dissipated fracture energy of concrete: role of the meso-structure and inﬂuence of the loading rate

Numerical determination of the tensile response and the dissipated fracture energy of concrete: role of the mesostructure and influence of the loading rate

Graph Chatbot

Chattez avec Graph Search

Coherent structures in open channel flows with bed load transport over an hydraulically rough bed

Bedload transport powered by daily floods: unsteadiness and stochasticity.

Ecosystem respiration increases with biofilm growth and bed forms: Flume measurements with resazurin

Quadrant Analysis of Shear Events in Open Channel Flows Over Mobile and Immobile Hydraulically Rough Beds

Tracking bed load particles in a steep flume: Methods and results.

Shear velocity estimates in rough-bed open-channel flow

The hydro-morphological index of diversity: a tool for describing habitat heterogeneity in river engineering projects

Ecomorphodynamics of rivers with converging boundaries

Numerical determination of the tensile response and the dissipated fracture energy of concrete: role of the mesostructure and influence of the loading rate

Numerical determination of the tensile response and the dissipated fracture energy of concrete: role of the meso-structure and inﬂuence of the loading rate