Concept

Hydraulic brake

Related publications (154)

Capillary Effects on Groundwater Waves in Unconfined Coastal Aquifers

Various types of Boussinesq model exist, including those that account for finite-depth aquifers and capillary effects. Such models are used to simulate propagation of groundwater waves (watertable fluctuations) due to, for example, tides. However, discrepa ...

2012

Linear multi-modal actuation through discrete coupling

Nitesh Maheshwari

Due to technological limitations robot actuators are often designed for specific tasks with narrow performance goals, whereas a wide range of output and behaviours is necessary for robots to operate autonomously in uncertain complex environments. We presen ...

IEEE2012

A naming convention for the Piano Key Weirs geometrical parameters

Michel Pirotton

Flood management is more than ever an issue for dam designers and engineering consulting firms in charge of rehabilitation works. Piano Key Weirs are a new cost-effective type of spillway designed to improve dams discharge capacity. These structures are pa ...

CRC Press, Taylor & Francis Group2011

From Labyrinth to Piano Key Weirs – A historical review

Anton Schleiss

Free crest spillways are hydraulically efficient and safe in operation. Since their discharge capacity is directly proportional to the crest length several types have been developed with the purpose to increase the length of the latter. Among these types t ...

CRC Press, Taylor & Francis Group2011

Influence of tributary widening on confluence morphodynamics

Marcelo Leite Ribeiro

Confluences are the nodes of the fluvial network. They are typically characterized by highly heterogeneous conditions that are favorable for a sound fluvial ecosystem, and play a key role in the connectivity of the river system. During the past centuries, ...

EPFL - LCH2011

Experimental parametric study for hydraulic design of PKWs

Anton Schleiss, Marcelo Leite Ribeiro

The implementation of a new type of labyrinth spillway, called PKW (Piano Key Weir) reveals as a performing alternative for increasing the overflow capacity of existing dams. The optimal hydraulic design of such structure is however not obvious due to the ...

CRC Press, Taylor & Francis Group2011

Determination of Hydroacoustic Draft Tube Parameters by High Speed Visualization during Model Testing of a Francis Turbine

François Avellan, Christian Landry, Andres Müller, Sébastien Alligné

Francis turbines can experience critical instabilities at high load operating points, limiting their maximum power output. The swirling flow developed in the draft tube produces a cavitating axisymmetric volume, acting as an internal energy source leading ...

2011

Response of an Embedded Block Impacted by High-Velocity Jets

Matteo Paolo Elia Antonio Federspiel

High-velocity plunging jets, issuing from ood release structures of dams, may result in scouring of the rocky riverbed and even endanger the foundation of the dams. Assessment of the scour extent is essential to ensure the safety of the dam and appurtenant ...

EPFL2011

Quantitative Prediction Of Flow Patterns In Liquid-Liquid Flow In Micro-Capillaries

Lioubov Kiwi, Madhvanand Namadeo Kashid

Flow patterns in microstructured reactors (or microchannels) play an important role in dictating the mass transfer rates. In the present work, experiments were carried out to investigate the two phase (liquids) flow patterns in microchannels with different ...

Elsevier2011

Hydrodynamic Instabilities in Well-Balanced Finite Volume Schemes for Frictional Shallow Water Equations. The Kinematic Wave Case

Martin Rentschler

We report the developments of hydrodynamic instabilities in several well-balanced finite volume schemes that are observed during the computation of the temporal evolution of an out-balance flow which is essentially a kinematic wave. The numerical simulatio ...

Springer Verlag2011

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