Experimental-Based Methodology to Improve the Design of Vertical Slot Fishways

Ballu, Aurélien; Pineau, G.; Calluaud, Damien; Lee, David

doi:10.1061/(asce)hy.1943-7900.0001621

Cited by 10 publications

(5 citation statements)

References 15 publications

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“…The baffles in the pools have the following ratios: A/b = 2 and a/b = 1.3. To ensure the migration of individuals or species with low swimming ability, these fishways can be improved by inserting elements such as vertical cylinders, sills in the slot, bottom roughness or flexible structures, which were suggested by Tarrade et al (2011), Calluaud et al (2014 or Ballu et al (2019). The influence of added elements on the flow features is highlighted by laboratory and field experiments and flow numerical simulations.…”

Section: Methods and Resultsmentioning

confidence: 99%

“…The modification of the flow topology, discharge coefficients and turbulence features were evaluated by ADV and water depth measurements. The results presented herein may be used to define a predictive law that helps engineers ensure the greatest effectiveness of VSFs with the presence of elements (Ballu et al 2019). For example, macro-roughness are more and more often positioned at the bottom of fishways and they can facilitate the passage of benthic species through the crossing device (Branco et al 2015).…”

Section: Methods and Resultsmentioning

confidence: 99%

“…Values of the discharge coefficient for these different configurations are given to help the engineers to design such vertical slot fishways. A methodology is proposed which defines first the topology of the flow from the geometric parameters and finally predicts the discharge coefficients, (Ballu et al 2019).…”

Section: Discussionmentioning

confidence: 99%

See 2 more Smart Citations

The Attractiveness of Fishways and Bypass Facilities

Peter,

Schoelzel,

Wilmsmeier

et al. 2022

Novel Developments for Sustainable Hydropower

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This chapter deals with the conventional upstream fish passage technologies developed for a safe fish migration at run-of-river hydropower plants (HPPs). It covers the factors influencing successful migration, current status, practices and challenges, novel developments, recommendations and outlook. Main focusses of this chapter are on the attractiveness of fishways and bypass facilities based on FIThydro study results. Although upstream fish passage technologies are well developed, there are still research gaps on their effectiveness related to their attractiveness and passabilities. FIThydro fills such research gaps by providing tools, methods, devices and best practice examples. This chapter covers the field studies at the case study HPP Guma with pool and weir fishway in Spain and Schiffmühle with vertical-slot and nature-like fishways in Switzerland and a combination of field, laboratory and numerical simulation studies of vertical-slot fishway in France. The results of these three studies contribute to better fishway design for a range of fish species and hydraulic conditions.

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Section: Methods and Resultsmentioning

confidence: 99%

Section: Methods and Resultsmentioning

confidence: 99%

See 1 more Smart Citation

The Attractiveness of Fishways and Bypass Facilities

Peter,

Schoelzel,

Wilmsmeier

et al. 2022

Novel Developments for Sustainable Hydropower

Self Cite

View full text Add to dashboard Cite

show abstract

“…In this study, a reduced-scale hydraulic model was used to solve the high-cost problem caused by constructing the original-size model [20]. The transformed hydraulic indexes based on the Froude similarity criterion were used to analyze the response of fish to hydraulic characteristics so as to obtain regular data about their upstream trajectories and swimming ability [21][22][23][24].…”

Section: Introductionmentioning

confidence: 99%

Response of Upstream Behavior and Hydrodynamic Factors of Anguilla Japonica in a Combined Bulkhead Fishway under Tidal Conditions

Zhou

Lian

Bai

et al. 2023

Water

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Frequent changes in the tide levels in estuaries cause constant changes in the hydraulics of fish passage systems, with important effects on successful fish passage and swimming behavior. In most cases, Japanese eels often have low passage rates in engineered fishways because of their special habits. In this study, we established a 1:4 scaled-down weir-hole combination bulkhead fishway, studied the effects of different tidal differences and water depths on the passage rates and swimming behavior of yellow-phase Japanese eels, and analyzed the response of the Japanese eels to the hydraulic factors by superimposing their swimming trajectories and the flow field simulation results. We found that the passage rate of the eels decreased from 68.18% to 50.00% and 45.45% under extreme high tide differences and extreme low tide differences, respectively. The eels tended to use the low-velocity area to climb up the wall, and when crossing the mainstream, the yellow-phase Japanese eels preferred the area with a flow velocity of 0.1~0.36 m/s and a turbulent kinetic energy range of 0.001~0.007 m2/s2. Their upstream swimming speed was maintained at a range of 0.1~0.3 m/s.

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“…The research focus differs depending on the stage of the fishway, and can be broadly categorized as concerning either design or operation. During the design phase, the main considerations are the hydraulic conditions within the fishway, and the control of fishway hydraulic parameters such as water velocity, intensity of turbulence, and energy dissipation rate in the pool, in order to minimize the hydraulic barriers presented to the upstream movement of fish [6][7][8][9][10]. After construction of a fishway, prototype observations can be conducted through fish release experiments to further identify flow barriers and improve the efficiency of fish passage.…”

Section: Introductionmentioning

confidence: 99%

A Method for Estimating the Velocity at Which Anaerobic Metabolism Begins in Swimming Fish

Wang

et al. 2021

Water

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Anaerobic metabolism begins before fish reach their critical swimming speed. Anaerobic metabolism affects the swimming ability of fish, which is not conducive to their upward tracking. The initiation of anaerobic metabolism therefore provides a better predictor of flow barriers than critical swimming speed. To estimate the anaerobic element of metabolism for swimming fish, the respiratory metabolism and swimming performance of adult crucian carp (Carassius auratus, mass = 260.10 ± 7.93, body length = 19.32 ± 0.24) were tested in a closed tank at 20 ± 1 °C. The swimming behavior and rate of oxygen consumption of these carp were recorded at various swimming speeds. Results indicate (1) The critical swimming speed of the crucian carp was 0.85 ± 0.032 m/s (4.40 ± 0.16 BL/s). (2) When a power function was fitted to the data, oxygen consumption, as a function of swimming speed, was determined to be AMR = 131.24 + 461.26Us1.27 (R2 = 0.948, p < 0.001) and the power value (1.27) of Us indicated high swimming efficiency. (3) Increased swimming speed led to increases in the tail beat frequency. (4) Swimming costs were calculated via rate of oxygen consumption and hydrodynamic modeling. Then, the drag coefficient of the crucian carp during swimming was calibrated (0.126–0.140), and the velocity at which anaerobic metabolism was initiated was estimated (0.52 m/s), via the new method described herein. This study adds to our understanding of the metabolic patterns of fish at different swimming speeds.

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Experimental-Based Methodology to Improve the Design of Vertical Slot Fishways

Cited by 10 publications

References 15 publications

The Attractiveness of Fishways and Bypass Facilities

The Attractiveness of Fishways and Bypass Facilities

Response of Upstream Behavior and Hydrodynamic Factors of Anguilla Japonica in a Combined Bulkhead Fishway under Tidal Conditions

A Method for Estimating the Velocity at Which Anaerobic Metabolism Begins in Swimming Fish

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