Publication

Computational modelling of fine sediment release using SEDMIX device with thrusters

Giovanni De Cesare
2019
Posters

Abstract

Problem: Reservoir sedimentation occurs in dams worldwide, reducing the live storage available in the reservoirs. Possible solution: Jenzer-Althaus 2011) testes a water stirring device (called SEDMIX) that keeps sediments in suspension, enhancing its release through the power intakes of the dam reporting a high efficiency. Background studies: Numerical simulations for a prototype for the Trift reservoir have been carried out in the past by Amini et al. (2017) and Chraïbi et al. (2018), obrtaining good results for sediment evacuation and determining the optimal location and dimensions of the device. Objective of the current work: Numerically test the performance of SEDMIX at the Trift reservoir implementing thrusters instead of the previous configuration with water jets using ANSYS 2019 R1 software.

Official source

https://infoscience.epfl.ch/entities/publication/73324c05-4af2-4739-8ebc-f14e8f8deeae

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Giovanni De Cesare
2019
Posters

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/73324c05-4af2-4739-8ebc-f14e8f8deeae

About this result

Related concepts (31)

Dam

A dam is a barrier that stops or restricts the flow of surface water or underground streams. Reservoirs created by dams not only suppress floods but also provide water for activities such as irrigation, human consumption, industrial use, aquaculture, and navigability. Hydropower is often used in conjunction with dams to generate electricity. A dam can also be used to collect or store water which can be evenly distributed between locations.

Ion thruster

An ion thruster, ion drive, or ion engine is a form of electric propulsion used for spacecraft propulsion. It creates thrust by accelerating ions using electricity. An ion thruster ionizes a neutral gas by extracting some electrons out of atoms, creating a cloud of positive ions. Ion thrusters are categorized as either electrostatic or electromagnetic. Electrostatic thruster ions are accelerated by the Coulomb force along the electric field direction.

Vajont Dam

The Vajont Dam or Vaiont Dam is a disused dam in northern Italy. It is one of the tallest dams in the world, with a height of . It is in the valley of the Vajont River under Monte Toc, in the municipality of Erto e Casso, north of Venice. The dam was conceived in the 1920s and eventually built between 1957 and 1960 by Società Adriatica di Elettricità, at the time the electricity supply and distribution monopoly in northeastern Italy. The engineer was Carlo Semenza (1893–1961).

Related publications (3)

Computational modelling of fine sediment release using SEDMIX device with thrusters

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