Publications related to Bed (geology)

Modelling of plunge pool scour evolution in non-cohesive sediments

Giovanni De Cesare, Sebastian Schwindt, Gaël Epely Chauvin

Turbulences in liquids caused by jets can be of interest for numerous applications. For one, it concerns flood spillway structures within civil engineering but also is key in any area where turbulent mixing is present. The numerical simulations of jets tha ...

2014

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

Mário Jorge Rodrigues Pereira Da Franca

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

Constitutive analysis of the mechanical anisotropy of Opalinus Clay

Lyesse Laloui, Bertrand François, Mathieu Nuth, Simon Salager

This paper aims to analyse the anisotropic features of behaviour of Opalinus Clay using the theory of plastic multi-mechanisms. The results of triaxial tests conducted with different load levels and directions showed that the mechanical behaviour of this s ...

Springer Verlag2013

Evaluation of EPB TBM performance in mixed ground conditions

Jian Zhao, Ákos Tóth

This paper investigates the performance of Earth Pressure Balance Tunnel Boring Machines (EPM TBMs) in rock-soil interface mixed-face ground based on the Deep Tunnel Sewerage System project in Singapore. Several methods are available to estimate TBM tunnel ...

Crc Press-Taylor & Francis Group2013

Bank protection at the outer side of curved channels by an undulated macrorough concrete wall

Anton Schleiss, Alexandre Vela Giro

Systematic hydraulic model tests were performed in a 90° curved channel with an undulated wall at the outer bank. The outer wall consisted of trapezoidal elements of 0.1 m depth and 0.33 m length. Three discharges (150, 180 and 210 l/s) and three bed slope ...

2012

Steep flume experiments with large immobile boulders and wide grain size distribution as encountered in alpine torrents

Anton Schleiss, Tamara Ghilardi

Flow conditions and sediment transport capacity in steep mountain rivers are poorly known. One of the main problems is that the presence of macro-roughness elements, such as large relatively immobile boulders, have a strong influence. Experiments carried o ...

Taylor & Francis Group, CRC Press2012

Quasi-3D modelling of bed shear stresses at high curvature

Koen Blanckaert

Single thread meandering rivers exhibit complex planformpatterns in their floodplains, resulting from a complex interaction between flow, bed and bank morphology. The flow through meander bends may be characterized by primary flow in streamwise direction a ...

Taylor & Francis Group, CRC Press2012

Fine sediment dynamics in unsteady open-channel flow studied with acoustic and optical systems

Ulrich Lemmin, Fereshteh Bagherimiyab Hunkeler

In order to simulate fine sediment dynamics over an armored bed in a tidal river, unsteady accelerating, then steady open-channel flow over a movable (but not moving) coarse gravel bed (D-50=5.5 mm) was studied. A layer of fine sediment (D-50=120 mu m) was ...

Elsevier2012

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Bed (geology)

Modelling of plunge pool scour evolution in non-cohesive sediments

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

Constitutive analysis of the mechanical anisotropy of Opalinus Clay

Evaluation of EPB TBM performance in mixed ground conditions

Case studies of TBM tunneling performance in rock-soil interface mixed ground

Bank protection at the outer side of curved channels by an undulated macrorough concrete wall

Steep flume experiments with large immobile boulders and wide grain size distribution as encountered in alpine torrents

Quasi-3D modelling of bed shear stresses at high curvature

Fine sediment dynamics in unsteady open-channel flow studied with acoustic and optical systems

Influence of Lateral Water Withdrawal on Bed Form Geometry in a Channel

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Bank protection at the outer side of curved channels by an undulated macrorough concrete wall

Steep flume experiments with large immobile boulders and wide grain size distribution as encountered in alpine torrents

Fine sediment dynamics in unsteady open-channel flow studied with acoustic and optical systems

Influence of Lateral Water Withdrawal on Bed Form Geometry in a Channel

Evaluation of EPB TBM performance in mixed ground conditions

Modelling of plunge pool scour evolution in non-cohesive sediments

Constitutive analysis of the mechanical anisotropy of Opalinus Clay

Quasi-3D modelling of bed shear stresses at high curvature

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

Case studies of TBM tunneling performance in rock-soil interface mixed ground