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  4. Characterization of the hydrodynamic behavior of surge shaft's orifices in SNOWY 2.0 power plant
 
conference paper

Characterization of the hydrodynamic behavior of surge shaft's orifices in SNOWY 2.0 power plant

Vorlet, Samuel Luke  
•
Amini, Azin  
•
Mazzucchi, Eugenio
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Boes, Robert
•
Albayrak, Ismail
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2024
Proceedings of the 10th International Symposium on Hydraulic Structures (ISHS 2024)
10th International Symposium on Hydraulic Structures 2024 – 10th ISHS

The Snowy 2.0 project is a large-scale pumped storage facility located in the Snowy Mountains in the SouthEastern part of New South Wales (Australia). It is an extension of the existing Snowy scheme, linking Tantangara (upper) and Talbingo (lower) reservoirs through 27 km of tunnels as well as an underground pumped hydropower station housing six reversible Francis pump-turbine and motor-generator units. The project will provide an additional generation capacity of 2'200 MW for the Snowy 2.0 scheme and is characterized by a maximal gross head of 694.35 m, a maximum design discharge of 385 m3/s in generation mode and 280 m3/s in pumping mode. The scheme includes two surge shafts: the lower and the upper ones. This manuscript presents the results of a study conducted to assess the hydrodynamic behavior of the orifice to optimize and validate the geometry of the surge shafts by means of numerical and physical modeling. It focuses on the methodology applied to first use numerical modeling to evaluate the design and the head loss, and second conduct laboratory tests on a physical model for the results comparison and validation. Results show a good agreement between numerical simulations and laboratory tests.

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Type
conference paper
DOI
10.3929/ethz-b-000675948
Author(s)
Vorlet, Samuel Luke  

EPFL

Amini, Azin  

EPFL

Mazzucchi, Eugenio
De Cesare, Giovanni  

EPFL

Editors
Boes, Robert
•
Albayrak, Ismail
•
Felder, Stefan
•
Crookston, Brian
Date Issued

2024

Publisher

ETH

Publisher place

Zurich

Published in
Proceedings of the 10th International Symposium on Hydraulic Structures (ISHS 2024)
DOI of the book
https://doi.org/10.3929/ethz-b-000675921
Start page

66

End page

75

Subjects

hydropower

•

physical modeling

•

numerical modeling

•

surge shaft

•

orifice

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
PL-LCH  
Event nameEvent acronymEvent placeEvent date
10th International Symposium on Hydraulic Structures 2024 – 10th ISHS

ISHS 2024

Zurich

2024-06-17 - 2024-06-19

Available on Infoscience
March 27, 2025
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/248311
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