Temat: fishway - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Conventional pool fish pass project for small threshold
Koncepcja komorowej przepławki dla ryb, towarzyszącej małej budowli piętrzącej
Autorzy:: Kiraga, M.
Kozieł, P.
Naliwajko, M.
Powiązania:: https://bibliotekanauki.pl/articles/28765982.pdf
Data publikacji:: 2022
Wydawca:: Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Tematy:: fishway
chamber fishway
weir
dam building
hydraulics
hydraulic structure
environmental impact
Źródło:: Acta Scientiarum Polonorum. Architectura; 2022, 21, 3; 55-65
1644-0633
Pojawia się w:: Acta Scientiarum Polonorum. Architectura
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Sedimentation of load in a step-pool rock ramp fishway with biotechnical embedded elements
Autorzy:: Tymiński, T.
Mumot, J.
Karpowicz, D.
Jianxin, X.
Powiązania:: https://bibliotekanauki.pl/articles/108516.pdf
Data publikacji:: 2017
Wydawca:: Instytut Meteorologii i Gospodarki Wodnej - Państwowy Instytut Badawczy
Tematy:: fishway
biotechnical embedded elements
suspended load
transport of sediment
Opis:: such structures has resulted in a more and more conventional approach to their design. However, every single hydraulic engineering structure with a negative impact on the possibility of a watercourse in fact requires an individual approach. Often, the solutions which are the most convenient and the easiest for a designer are not in the least the best ones for migratory fish. Semi-natural fishways in particular pose a technical challenge that requires an interdisciplinary approach. Designing and constructing them correctly is not an easy task, but once it is achieved, the structure is highly effective in terms of fish migration and the formation of new habitats. Another, equally important issue related to fishways of this type is their long-term usage and proper maintenance. In this case, it is crucial to consider the transport of load through the fishway channel, and more particularly its sedimentation in zones of lower flow velocities. This paper presents a qualitative analysis of the sedimentation of load based on laboratory research carried out on a model of a vegetated fishway. This research was performed to investigate and confirm the expected locations of accumulation of load in a semi-natural vegetated step-pool rock ramp fishway. Experiments show that the sedimentation of load in fish passes may be a highly problematic issue and may require that more attention be given to the proper upkeep of fishways. It may be necessary to address the problem of fishway maintenance and deal with fishways as structures that change over time not only because of hydrological conditions, but also due to the yearly growth cycle of vegetation.
Źródło:: Meteorology Hydrology and Water Management. Research and Operational Applications; 2017, 5, 2; 35-42
2299-3835
2353-5652
Pojawia się w:: Meteorology Hydrology and Water Management. Research and Operational Applications
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Numerical Modelling of Fish Passage with Turning Pools
Autorzy:: Maniecki, Ł.
Powiązania:: https://bibliotekanauki.pl/articles/241474.pdf
Data publikacji:: 2018
Wydawca:: Polska Akademia Nauk. Instytut Budownictwa Wodnego PAN
Tematy:: open channel flow
fishway
turbulence
numerical model
turning pool
Opis:: An assessment of operating conditions in a baffled fish passage with pool dimensions of 2:2 3:0 m, and 180 horizontally turning pools, was carried out using numerical computations and a site survey of water flow velocity distribution. Velocity was measured with a PMS electromagnetic flowmeter and a hydrometric current meter in representative cross-sections of the fish passage in the pool centres and in the baffle barrier cross-section area. Numerical computations were also performed for two alternative baffle locations in the fishway. One reflected the actual conditions, and the other was an alternative arrangement designed to improve hydraulic conditions for fish migration. The numerical model used the Large Eddy Simulation (LES) method, which makes it possible to detect large vortexes. The study pays close attention to the velocity field analysis as well as the distribution and sizes of vortexes in the turning pool of the culvert. The results of numerical computations and the site survey show high consistency, and the proposed baffle placement modification significantly improves flow conditions, especially in the entry section of the passage.
Źródło:: Archives of Hydro-Engineering and Environmental Mechanics; 2018, 65, 1; 41-66
1231-3726
Pojawia się w:: Archives of Hydro-Engineering and Environmental Mechanics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Hydraulic Research of Sediment Transport in the Vertical Slot Fish Passes
Autorzy:: Mumot, J.
Tymiński, T.
Powiązania:: https://bibliotekanauki.pl/articles/124389.pdf
Data publikacji:: 2016
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: vertical slot fishway
physical model
flow conditions
sediment
Opis:: The physical model of vertical slot fishway was conducted. On the fishway a device used for sediment dispense was installed. The sediment was dispensed to each chamber. Measurements of approx. height of the water table, measurements of flow rate, observation of line streams in chambers were carried out during the studies. The flows of sediment and hydraulic parameters inside designed fishway, single compartments and their connection with sedimentation process in individual chambers were also studied. the obtained research results constitute starting point for experimental analyses and research analyses. Based on the observation and measurements it is possible to state that the constructed physical model reflects the activity conditions of the vertical slot fishway. During the studies a place of deposition in sediments of individual fishway chambers were determined.
Źródło:: Journal of Ecological Engineering; 2016, 17, 1; 143-148
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Experimental Studies on the Spatial Structure and Distribution of Flow Velocities in Bolt Fishways
Autorzy:: Puzdrowska, Marta
Heese, Tomasz
Powiązania:: https://bibliotekanauki.pl/articles/124001.pdf
Data publikacji:: 2019
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: turbulent flow
bolt fishway
bolt fish pass
3D
spatial structure
fish pass
water flow
flow velocity
Opis:: One of more important elements affecting the efficiency of fish passes is a 3D spatial structure of the flow and the flow velocity. The paper presents an analysis pertaining to the deformations of these elements caused by the modification of the fishway’s partition geometry. It has a crucial meaning for the ability of fish to migrate through the fish pass. The research has a key practical significance as it proves the way the apparent modification of the partition geometry affects the hydraulic conditions within the entire the channel of the fishway. It may have very serious consequences for the design assumptions. The presented results of the experimental research were obtained as a consequence of the site and laboratory tests carried outusing a physical model. The measurements were performedfor 3 components of flow’s instantaneous speed within the indicated measurement sections. The results were developed using Matlab software. It was established that the number of whirls produced in the fishway’s pool depends on the quantity of spillway slots and – what seems to have the greatest impact on the flow structure – on the location of slots. The size of whirls is determined by the geometry of spillway slots. The presence of additional spillway slots in the pool, except for the huge main migration slot, contributes to the generation of more whirl structures within the recirculation zone. The more whirls produced in each of the whirl zones, the smaller their diameter. Thisshould create more favourable conditions for the fish migration.
Źródło:: Journal of Ecological Engineering; 2019, 20, 11; 82-99
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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