Fish guidance structures: hydraulic performance and fish guidance efficiencies
The hydraulic performance and fish guidance efficiency (FGE) for behaviourally-based mechanical fish guidance structures, i.e. louvers and modified angled bar racks (MBRs), were evaluated experimentally and the results are presented herein. Detailed velocity profiling was conducted to assess the hyd...
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Online Access: | https://doi.org/10.1080/24705357.2019.1677181 |
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fteawag:oai:dora:eawag_24955 2024-09-15T17:39:40+00:00 Fish guidance structures: hydraulic performance and fish guidance efficiencies Albayrak, Ismail Boes, Robert M. Kriewitz-Byun, Carl Robert Peter, Armin Tullis, Blake P. 2020 https://doi.org/10.1080/24705357.2019.1677181 eng eng Taylor & Francis Journal of Ecohydraulics--J. Ecohydraul.--journals:5454--2470-5357--2470-5365 eawag:24955 doi:10.1080/24705357.2019.1677181 scopus: 2-s2.0-85130448061 journal id: journals:5454 issn: 2470-5357 e-issn: 2470-5365 salmonids downstream fish migration fish guidance structures head loss cyprinids European eels Journal Article Text 2020 fteawag https://doi.org/10.1080/24705357.2019.1677181 2024-08-05T03:04:28Z The hydraulic performance and fish guidance efficiency (FGE) for behaviourally-based mechanical fish guidance structures, i.e. louvers and modified angled bar racks (MBRs), were evaluated experimentally and the results are presented herein. Detailed velocity profiling was conducted to assess the hydraulic performance of the 1:1 Froude-scaled racks in an etho-hydraulic laboratory flume. Guidance efficiencies of the studied rack configurations were evaluated through live-fish tests in the same flume. Tests were conducted with five European fish species, namely, barbel ( Barbus barbus ), spirlin ( Alburnoides bipunctatus ), European grayling ( Thymallus thymallus ), European eel ( Anguilla anguilla ) and brown trout ( Salmo trutta ). The results demonstrate that MBRs are advantageous over louvers because of reduced head losses, improved hydraulics and higher FGEs. Furthermore, use of a bottom overlay on the MBRs substantially increased the FGE. The results are discussed and compared with literature data. Recommendations for an optimized and economic MBR design are given. The present findings underpin the follow-up studies for further optimization of MBR design. Article in Journal/Newspaper Anguilla anguilla European eel DORA Eawag Journal of Ecohydraulics 5 2 113 131 |
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language |
English |
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salmonids downstream fish migration fish guidance structures head loss cyprinids European eels |
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salmonids downstream fish migration fish guidance structures head loss cyprinids European eels Albayrak, Ismail Boes, Robert M. Kriewitz-Byun, Carl Robert Peter, Armin Tullis, Blake P. Fish guidance structures: hydraulic performance and fish guidance efficiencies |
topic_facet |
salmonids downstream fish migration fish guidance structures head loss cyprinids European eels |
description |
The hydraulic performance and fish guidance efficiency (FGE) for behaviourally-based mechanical fish guidance structures, i.e. louvers and modified angled bar racks (MBRs), were evaluated experimentally and the results are presented herein. Detailed velocity profiling was conducted to assess the hydraulic performance of the 1:1 Froude-scaled racks in an etho-hydraulic laboratory flume. Guidance efficiencies of the studied rack configurations were evaluated through live-fish tests in the same flume. Tests were conducted with five European fish species, namely, barbel ( Barbus barbus ), spirlin ( Alburnoides bipunctatus ), European grayling ( Thymallus thymallus ), European eel ( Anguilla anguilla ) and brown trout ( Salmo trutta ). The results demonstrate that MBRs are advantageous over louvers because of reduced head losses, improved hydraulics and higher FGEs. Furthermore, use of a bottom overlay on the MBRs substantially increased the FGE. The results are discussed and compared with literature data. Recommendations for an optimized and economic MBR design are given. The present findings underpin the follow-up studies for further optimization of MBR design. |
format |
Article in Journal/Newspaper |
author |
Albayrak, Ismail Boes, Robert M. Kriewitz-Byun, Carl Robert Peter, Armin Tullis, Blake P. |
author_facet |
Albayrak, Ismail Boes, Robert M. Kriewitz-Byun, Carl Robert Peter, Armin Tullis, Blake P. |
author_sort |
Albayrak, Ismail |
title |
Fish guidance structures: hydraulic performance and fish guidance efficiencies |
title_short |
Fish guidance structures: hydraulic performance and fish guidance efficiencies |
title_full |
Fish guidance structures: hydraulic performance and fish guidance efficiencies |
title_fullStr |
Fish guidance structures: hydraulic performance and fish guidance efficiencies |
title_full_unstemmed |
Fish guidance structures: hydraulic performance and fish guidance efficiencies |
title_sort |
fish guidance structures: hydraulic performance and fish guidance efficiencies |
publisher |
Taylor & Francis |
publishDate |
2020 |
url |
https://doi.org/10.1080/24705357.2019.1677181 |
genre |
Anguilla anguilla European eel |
genre_facet |
Anguilla anguilla European eel |
op_relation |
Journal of Ecohydraulics--J. Ecohydraul.--journals:5454--2470-5357--2470-5365 eawag:24955 doi:10.1080/24705357.2019.1677181 scopus: 2-s2.0-85130448061 journal id: journals:5454 issn: 2470-5357 e-issn: 2470-5365 |
op_doi |
https://doi.org/10.1080/24705357.2019.1677181 |
container_title |
Journal of Ecohydraulics |
container_volume |
5 |
container_issue |
2 |
container_start_page |
113 |
op_container_end_page |
131 |
_version_ |
1810481682829017088 |