Study of a Rock-Ramp Fish Pass with Staggered Emergent Square Obstacles - Université Toulouse III - Paul Sabatier - Toulouse INP Accéder directement au contenu
Article Dans Une Revue Water Année : 2021

Study of a Rock-Ramp Fish Pass with Staggered Emergent Square Obstacles

Résumé

A rock-ramp fish passage with square obstacles was experimentally and numerically studied in this work with the objective of investigating in detail the hydraulic behind such fishways and to evaluate the importance of the shape of the obstacles. The LES and VOF methods were used for the simulations, and for the measurements, shadowgraphy and ADV were applied. Two different validations were successfully performed. In the first one, the experimental and numerical results of a chosen case were compared in detail. In the second validation, the focus was given to the stage-discharge. Following the validation, a numerical study was carried out to point out the differences in the flow characteristics from a configuration with square and circular obstacles. The discharge was nearly the same for both configurations, which implies different water depths. The results showed a lower velocity field, lower turbulent kinetic energy, and lower lateral fluctuations for the configuration with square blocks, which indicated a better passability for this geometry. However, it also presented a higher water depth, which led to a less attractive discharge. The differences in the flow generated in the two configurations indicated that the shape is an important modifiable parameter to be considered in the design process.
Fichier principal
Vignette du fichier
2021_Cavalcanti.pdf (3.03 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Licence : CC BY - Paternité

Dates et versions

hal-04124013 , version 1 (09-06-2023)

Identifiants

Citer

Flavia Cavalcanti Miranda, Ludovic Cassan, Pascale Laurens, Tien Dung Tran. Study of a Rock-Ramp Fish Pass with Staggered Emergent Square Obstacles. Water, 2021, 13 (9), pp.1175. ⟨10.3390/w13091175⟩. ⟨hal-04124013⟩
40 Consultations
10 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More