Hydraulic performance of fish guidance structures with curved bars – Part 2: flow fields
dc.contributor.author
Beck, Claudia
dc.contributor.author
Albayrak, Ismail
dc.contributor.author
Meister, Julian
dc.contributor.author
Boes, Robert
dc.date.accessioned
2021-05-06T05:02:58Z
dc.date.available
2020-01-01T18:40:01Z
dc.date.available
2020-01-16T11:28:04Z
dc.date.available
2020-09-28T14:00:18Z
dc.date.available
2021-05-05T16:01:51Z
dc.date.available
2021-05-06T05:02:58Z
dc.date.issued
2020
dc.identifier.issn
0022-1686
dc.identifier.issn
1814-2079
dc.identifier.other
10.1080/00221686.2019.1671516
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/387342
dc.identifier.doi
10.3929/ethz-b-000387342
dc.description.abstract
The current geometric designs of fish guidance structures with vertical bars for run-of-river hydropower plants result in high head losses and asymmetric turbine admission flow. To address these issues, we develop innovative curved bar designs and experimentally investigate different rack configurations with curved bars in a laboratory flume. The present paper (Part II) focuses on the hydraulic performance of the novel curved bar designs with regard to flow fields, while the companion paper (Part I) reports the results on the head losses. The detailed flow fields obtained by 3D velocity measurements show that the curved bars promote flow conditions favourable for both fish guidance and turbine operation. The flow straightening effect of the curved bars leads to quasi-symmetrical turbine admission flow and reduced head losses. The findings are discussed with regard to fish protection and guidance, and optimal engineering application.
en_US
dc.format
application/pdf
en_US
dc.language.iso
en
en_US
dc.publisher
Taylor & Francis
en_US
dc.rights.uri
http://creativecommons.org/licenses/by-nc/4.0/
dc.subject
Curved-bar rack
en_US
dc.subject
fish downstream migration
en_US
dc.subject
fish guidance
en_US
dc.subject
flow field
en_US
dc.subject
hydraulic performance
en_US
dc.title
Hydraulic performance of fish guidance structures with curved bars – Part 2: flow fields
en_US
dc.type
Journal Article
dc.rights.license
Creative Commons Attribution-NonCommercial 4.0 International
dc.date.published
2019-12-17
ethz.journal.title
Journal of Hydraulic Research
ethz.journal.volume
58
en_US
ethz.journal.issue
5
en_US
ethz.journal.abbreviated
J. Hydraul. Res.
ethz.pages.start
819
en_US
ethz.pages.end
830
en_US
ethz.size
27 p. accepted version
en_US
ethz.version.deposit
acceptedVersion
en_US
ethz.grant
Fishfriendly Innovative Technologies for Hydropower
en_US
ethz.identifier.wos
ethz.identifier.scopus
ethz.publication.place
Abingdon
en_US
ethz.publication.status
published
en_US
ethz.leitzahl
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02115 - Dep. Bau, Umwelt und Geomatik / Dep. of Civil, Env. and Geomatic Eng.::02611 - V. Wasserbau, Hydrologie u. Glaziologie / Lab. Hydraulics,Hydrology,Glaciology::03820 - Boes, Robert / Boes, Robert
en_US
ethz.leitzahl.certified
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02115 - Dep. Bau, Umwelt und Geomatik / Dep. of Civil, Env. and Geomatic Eng.::02611 - V. Wasserbau, Hydrologie u. Glaziologie / Lab. Hydraulics,Hydrology,Glaciology::03820 - Boes, Robert / Boes, Robert
ethz.grant.agreementno
727830
ethz.grant.agreementno
727830
ethz.grant.fundername
SBFI
ethz.grant.fundername
SBFI
ethz.grant.funderDoi
10.13039/501100007352
ethz.grant.funderDoi
10.13039/501100007352
ethz.grant.program
H2020
ethz.grant.program
H2020
ethz.relation.hasPart
10.3929/ethz-b-000384896
ethz.date.deposited
2020-01-01T18:40:05Z
ethz.source
WOS
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2020-09-28T14:00:28Z
ethz.rosetta.lastUpdated
2022-03-29T07:03:24Z
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true
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