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Comparison of hydraulic design equations for Type A Piano Key Weirs

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Self-consistent model for the saturation mechanism of the response to harmonic forcing in the backward-facing step flow

François Gallaire, Vladislav Mantic Lugo

Certain flows denominated as amplifiers arc characterized by their global linear stability while showing large linear amplifications to sustained perturbations. As the forcing amplitude increases, a strong saturation of the response appears when compared t ...

Cambridge University Press2016

Too big to grow

Vladislav Mantic Lugo

Open flows, such as wakes, jets, separation bubbles, mixing layers, boundary layers, etc., develop in domains where fluid particles are continuously advected downstream. They are encountered in a wide variety of situations, ranging from nature to technolog ...

EPFL2015

A mixed-signal computer architecture and its application to power system problems

Theodoros Kyriakidis

Radical changes are taking place in the landscape of modern power systems. This massive shift in the way the system is designed and operated has been termed the advent of the ``smart grid''. One of its implications is a strong market pull for faster power ...

EPFL2015

Hydraulische Bemessung des Klaviertastenwehrs

Anton Schleiss, Michael Pfister

The Piano Key Weir (PKW) is a hydraulically attractive alternative to linear overflow weirs, increasing the unit discharge for similar heads and spillway widths. This advantage allows for operating dam reservoirs on an increased level and thereby provides ...

ETH, Zürich2014

Estimation of A-type Piano Key weir rating curve

Anton Schleiss, Michael Pfister

The Piano Key weir (PKW) is a hydraulically attractive alternative to linear overflow weirs, increasing the unit discharge for similar heads and spillway widths. This advantage allows operating dam reservoirs on an increased level and provides thereby an e ...

Eds Erpicum et al., CRC Press, Boca Raton2013

MODÉLISATION HYDROLOGIQUE DE LA BIRSE

Kévin André

The main objective of this research is to keep up existing work related to the hydrological modeling of the Birse River in Switzerland. The present studies were performed using the software package HydroRoute System, being developed by Richard Metzger. Hyd ...

2013

Effect of driftwood on hydraulic head of Piano Key weirs

Anton Schleiss, Michael Pfister, Blake Tullis

Driftwood is often transported by a river course during flood events and can be problematic where it accumulates at hydraulic structures. Near obstacles, driftwood can block and thus reduces the open flow area for water passage, resulting in a lowered disc ...

Erpicum et al., CRC Press, Boca Raton2013

Finite Dimensional Methods for Differential Flatness

Basile Graf

In Control System Theory, the study of continuous-time, finite dimensional, underdetermined systems of ordinary differential equations is an important topic. Classification of systems in different categories is a natural initial step to the analysis of a g ...

EPFL2013

Hydraulic design of A-type Piano Key Weirs

Anton Schleiss, Michael Pfister, Marcelo Leite Ribeiro

Piano Key Weirs (PKWs) are an alternative to linear overflow structures, increasing the unit discharge for similar heads and spillway widths. Thus, they allow to operate reservoirs with elevated supply levels, thereby providing additional storage volume. A ...

Taylor & Francis Ltd2012

Introducing qualitative dimensions to analyze the usefulness of Web 2.0 platforms as PLEs

Denis Gillet, Stéphane Sire, Evgeny Bogdanov

The trends in web development of educational applications and of Web 2.0 or social applications are converging. Platforms are designed to host a variety of software components (called widgets or plugins), which can be organised or combined (mashed-up) at u ...

2011