Experimental Analysis of a Fish Guidance System for a River Water Intake

Circiumaru, Gabriela; Chihaia, Rareş-Andrei; Voina, Andreea; Nistoran, Daniela Elena Gogoaşe; Simionescu, Ştefan-Mugur; El-Leathey, Lucia-Andreea; Mândrea, Lucian

doi:10.3390/w14030370

Cited by 6 publications

(19 citation statements)

References 35 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The experimental results concerning the water velocity variation on horizontal and vertical planes, previously measured with a Pitot-Prandtl tube, were reported in Cîrciumaru et al [21], along with the results related to the water flow rate captured by the intake and the airflow rate introduced through the porous hose.…”

Section: Figure 1 Ecological Water Intakementioning

confidence: 91%

Fish guidance system for a river water intake - experimental and numerical study

Dancă¹,

Simionescu

Circiumaru³

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

Self Cite

View full text Add to dashboard Cite

Fish guidance systems associated to water intakes represent an important feature, mandatory to prevent fish from being accidentally drawn into artificial hydraulic facilities. Such systems are recommended for a proper integration of the water intake into the surrounding environment and contribute to reducing the impact on the environment. In this paper a prototype of fish guidance system which can be applied to river water intakes is presented and analysed. The fish are guided by means of an air bubbles curtain, which influence the flow of the water. This study was performed numerically in Fluent software and experimentally in laboratory conditions. Velocity distribution maps were achieved using Particle Image Velocimetry technique for two water flowrates. The results presented in the paper are a part of the recorded data, and have the purpose to validate the numerical model for the case without air bubbles curtain. A second purpose is to evaluate the changes caused by the bubbles curtain on the water velocity. The results obtained by numerical simulations are in good correlation with the experimental results performed using PIV technique and demonstrate that the fish guidance systems associated to water intakes can represent an efficient solution for fish protection in their natural environment.

show abstract

Section: Figure 1 Ecological Water Intakementioning

confidence: 91%

Fish guidance system for a river water intake - experimental and numerical study

Dancă¹,

Simionescu

Circiumaru³

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

Self Cite

View full text Add to dashboard Cite

show abstract

“…They necessitate carrying out laboratory experiments in order to establish the tolerance thresholds for each species [22]. Dissolved gas barriers are quasi-efficient as long as a certain concentration is obtained (e.g., approximately 1.5 mg/L DO [12,23]). Either purified nitrogen or carbon dioxide was injected into the water to determine the feasibility of a gas bubble curtain [24].…”

Section: Assessment and Analysis Of Behavioral Barriersmentioning

confidence: 99%

“…Turnpenny et al [35] and Jones et al [36] also demonstrated that combined behavioral barriers are more efficient than independent ones. Thus, the use of the Types of behavioral barriers and their characteristics [12].…”

Section: Assessment and Analysis Of Behavioral Barriersmentioning

confidence: 99%

“…In order to improve the efficiency of the fish guidance system in real operating conditions, the authors elaborated a patent application [52] that proposes, in addition to the bubble curtain, the use of an optoelectronic device to generate strobe light. These two systems create a behavioral barrier that prevents the accidental entry of small fish or juveniles through the intake holes.…”

Section: Inland Waters -Ecology Limnology and Environmental Protectionmentioning

confidence: 99%

See 1 more Smart Citation

Experimental Study of a Fish Behavioral Barrier Based on Bubble Curtains for a River Water Intake

Circiumaru,

Chihaia,

El-Leathey

et al. 2024

Environmental Sciences

Self Cite

View full text Add to dashboard Cite

The protection of fish habitat near water diversion or hydrotechnical facilities is of particular interest for researchers working in various fields. The chapter is focused on an experimental study of a fish behavioral barrier consisting of a bubble curtain operating along a river water intake scale model. It approaches elements of fish hydrodynamics, river water intakes, as well as physical and non-physical barriers for fish diversion from hydrotechnical facilities. The design, development, and testing of the fish behavioral barrier as well as the results of the experimental analysis are discussed. The proposed experimental setup was based on a barrier placed in the proximity of a river water intake scale model fitted and tested in a closed-circuit hydraulic stand. The intake chamber is provided with perforated orifices which communicate through an inlet with a lower tank for discharging the water into another tank located beneath. A certain water velocity within the hydraulic stand was set to assess the tandem operation of the bubble curtain and water intake. A sharp velocity gradient was found in most cases, indicating local velocity changes and creating the premises for impacting the fish behavior. Conclusions and future research development are also envisaged in the chapter.

show abstract

“…The purpose of behavioral barriers (bubble curtains, strobe lights, sound, electricity, magnetic fields, or changed direction and velocity of the water flow) is to deter fish from entering zones that may pose a threat to them. Compared to physical barriers, behavioral barriers are based on the natural behaviors of fish [27] and require their activity; therefore, the effectiveness of the barriers largely depends on the swimming ability of the fish.…”

Section: Introductionmentioning

confidence: 99%

Hydraulic Analysis of a Passive Wedge Wire Water Intake Screen for Ichthyofauna Protection

Zielina,

Pawłowska-Salach,

Kaczmarski

2023

Applied Sciences

View full text Add to dashboard Cite

A passive wedge screen, thanks to its many functional and environmental advantages, has recently become a popular type of surface water intake for municipal and industrial purposes. The design solutions proposed in this paper for a passive wedge wire screen intake model and two different deflectors have been experimentally tested under conditions that can be considered as no-flow conditions at the hydraulic flume. There was only a slight flow associated with the operation of the screen, while there was almost no flow in the hydraulic channel itself, such that it would be considered a watercourse. A hydraulic analysis was carried out, including velocity distribution around the screen as well as the determination of head losses with or without deflectors installed inside the screen. Lower inlet and inflow velocities to the surface of the water intake reduce the risk of injury or death to small fish and fry as well as attracting pollutants understood as sediments, debris, and plant remains floating in the river. In order to achieve the lowest possible maximum inlet and inflow velocities at the highest possible intake capacity, it was necessary to equalize the approach velocity distributions. It was shown that by using the proposed deflectors, the approach velocity distributions were equalized and the maximum values of inflow and inlet velocities were reduced. A water intake screen with a deflector with an uneven porosity distribution equalized the approach velocities better than a deflector with equal openings, but the differences were small. Installing the wedge screen model reduced the maximum inlet velocity from exceeding 2 m/s to a value of 0.08 m/s, and after installing deflectors with equal and unequal openings to values of 0.06 m/s and 0.05 m/s, respectively. In addition to laboratory tests, the paper describes the numerical simulations performed in ANSYS Fluent software. The results of the simulations made it possible to obtain a broader study, as well as to compare the velocity values obtained at the measuring points during the laboratory tests.

show abstract

Experimental Analysis of a Fish Guidance System for a River Water Intake

Cited by 6 publications

References 35 publications

Fish guidance system for a river water intake - experimental and numerical study

Fish guidance system for a river water intake - experimental and numerical study

Experimental Study of a Fish Behavioral Barrier Based on Bubble Curtains for a River Water Intake

Hydraulic Analysis of a Passive Wedge Wire Water Intake Screen for Ichthyofauna Protection

Contact Info

Product

Resources

About