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Azin Amini

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Publications associées (48)

Innovative methods to release fine sediments from reservoirs developed at EPFL, Switzerland

Giovanni De Cesare, Anton Schleiss, Pedro Filipe De Almeida Manso, Azin Amini, Sabine Chamoun

Electricity generation, water supply, flood protection, flow regulation and navigation are amongst the main services provided by reservoirs. Sedimentation affects the sustainability of reservoirs, by reducing their storage capacity, and increases the negat ...

2019

Roll-up region of tip vortex: numerical investigation

Mohamed Farhat, Azin Amini, Martino Reclari, Matthieu Dreyer, Ali Amini

The appearance of gas-filled vortices at the tip of hydraulic machines blades is usually associated with increase of losses, vibrations, noise and erosion risk. The understanding of the roll-up region, where the boundary layer on the pressure side crosses ...

IOP PUBLISHING LTD2019

Anatomie d’un coude

Giovanni De Cesare, Azin Amini, Raphaël Sprenger, Jean-Noël Saugy

À Martigny, le Rhône prend un virage à 90 degrés vers le nord-ouest. Un changement de cap qui influence fortement la dynamique du fleuve, surtout en période de crue. Afin de mieux en connaître les effets, la Plateforme de constructions hydrauliques de l’EP ...

espazium2019

Short-and-long-term storage volume recovery in a reservoir using a combined mixing-dredging device

Giovanni De Cesare, Anton Schleiss, Azin Amini, Arianna Yadira Onate Paladines

2019

A universal formula for generalized cardinal B-splines

Michaël Unser, Azin Amini, Ramtin Madani

2018

Innovative methods to release fine sediments from seasonal reservoirs

Giovanni De Cesare, Anton Schleiss, Pedro Filipe De Almeida Manso, Azin Amini, Sabine Chamoun, Sebastián Guillén Ludeña

The papers present three innovative solutions for fine sediment manage- ments in seasonal reservoirs, which are at different stages of maturity. Operational reservoir stirring using jet-like inflows may facilitate sediment routing, at no addi- tional cost ...

CRC Press/Balkema2018

Kariba plunge pool rehabilitation

Giovanni De Cesare, Anton Schleiss, Azin Amini, Claudia Ylla Arbos, Ivan Stojnic

The Kariba Dam is a 128 m high arch dam located on the Zambezi River, between Zambia and Zimbabwe. It forms the Kariba lake, with a surface of 5400 km2 and a capacity of 185 km3. In the 20 years following dam construction, heavy rainfalls required frequent ...

2018

Effect of spilling from adjacent orifices on the velocity field and pressures in front of needle stop-logs

Giovanni De Cesare, Azin Amini, Cédric Bron, Ivan Stojnic

In this study, the effect of spilling from neighboring sluice gates on stop-logs was experimentally investigated on a 1:65 physical scale model comprised of a double arch dam, a reservoir area, six spillway orifices and two stop-logs. Two types of measurem ...

2018

Improvement of EIA methods for large reservoirs by using network thinking analysis approach: a case study of Azad dam, Iran

Anton Schleiss, Azin Amini, Nicolas Schmid, Yannick Fessler

Dam construction and large reservoir projects are essential for sustainable economic developments especially in developing countries like Iran. Such big projects, could have major social and environmental impacts. At this point, Environmental Impact Assess ...

2018

Computational hydraulic modelling of fine sediment stirring and evacuation through the power waterways at the Trift reservoir

Anton Schleiss, Pedro Filipe De Almeida Manso, Célestin Leupi, Azin Amini, Sara Venuleo

Taking advantage of the withdrawal of some glaciers, several new dams will eventually be constructed in Switzerland in the coming years as a part of the 2050 energy strategy. The Trift dam, located in Berner Oberlands in Switzerland, is one of these new pr ...

2017

Investigation of venting turbidity currents in the Rudbar-Lorestan reservoir in Iran

Giovanni De Cesare, Anton Schleiss, Azin Amini, Sabine Chamoun, Sara Venuleo

Venting of turbidity currents is known as an efficient measure to prevent reservoir sedimentation and is applied in many reservoirs globally. It has several economic and ecological advantages compared with other evacuation methods. In the literature, numer ...

2017

Assessment of wave risk for Swiss lakes: Numerical simulation of waves of different return periods

Philippe Heller, Azin Amini

2016

Reactivation of Klingnau reservoir sidearm: Numerical simulation of sediment release downstream

Giovanni De Cesare, Philippe Heller, Anton Schleiss, Azin Amini

The Klingnau reservoir, situated in north Switzerland, suffers from sedimentation in its left enlargement. The dam is placed in the Aare River about 1 km upstream of its confluence with the Rhine. Due to natural conservation and flood protection reasons, i ...

CRC Press/Balkema2014

Comprehensive numerical simulations of sediment transport and flushing of a Peruvian reservoir

Giovanni De Cesare, Philippe Heller, Anton Schleiss, Azin Amini

Numerical modeling of sediment transport in reservoirs, especially for sudden events such as flushing, is still a challenging research topic. In the present study, sediment transport and sediment flushing are simulated for a Peruvian reservoir. Situated in ...

CRC Press/Balkema2014

Optimal Interpolation Laws for Stable AR(1) Processes

Michaël Unser, Azin Amini

In this paper, we focus on the problem of interpolating a continuous-time AR(1) process with stable innovations using minimum average error criterion. Stable innovations can be either Gaussian or non-Gaussian. In the former case, the optimality of the expo ...

SampTA2013

Stochastic Models and Techniques for Sparse Signals

Michaël Unser, Azin Amini

Real-world data such as multimedia, biomedical, and telecommunication signals are formed of specific structures. However, these structures only determine some general properties of the data while the unknown or unpredictable parts are assumed to be random. ...

IEICE2012

Numerical Modeling Of Oil-Water Multiphase Flow Contained By An Oil Spill Barrier

Anton Schleiss, Azin Amini

To enhance the understanding of hydrodynamics of oil spill containment booms, numerical simulations of different booms were carried out using the state-of-the-art Computational Fluid Dynamics program, FLUENT. Single and double barriers containing oil over ...

2009

Entrainment of floating granules behind a barrier

Anton Schleiss, Azin Amini

To simulate the retaining capacity of an oil barrier in an uniform flow field, experiments were carried out in a laboratory flume at Ecole Polytechnique Federale de Lausanne (EPFL), Laboratory of Hydraulic Constructions (LCH) by using Light Expanded Clay A ...

Taylor & Francis Ltd2009

Behavior of rigid and flexible oil barriers in the presence of waves

Anton Schleiss, Azin Amini

Although oil barriers have been used for many years to contain slicked oil in open seas, the effect of waveson them has been rarely considered. In the present study, we investigated the response of rigid and flexible oil containment barriers in the presenc ...

2009

Velocity profiles and interface instability in a two-phase fluid: investigations using ultrasonic velocity profiler

Giovanni De Cesare, Anton Schleiss, Azin Amini

In the present study the velocity profiles and the instability at the interface of a two phase water-oil fluid were investigated. The main aim of the research project was to investigate the instability mechanisms that can cause the failure of an oil spill ...

Springer-Verlag2009

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