Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Describing fish passage in a river confluence with telemetry and CFD
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Fluid and Experimental Mechanics.ORCID iD: 0000-0001-9789-6293
Swedish University of Agricultural Sciences, Department of Wildlife, Fish and Environmental Studies.
Swedish University of Agricultural Sciences, Department of Wildlife, Fish and Environmental Studies.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Fluid and Experimental Mechanics.ORCID iD: 0000-0002-1033-0244
Show others and affiliations
2016 (English)In: / [ed] Webb, JA, Costelloe, JF, CasasMulet, R, Lyon, JP, Stewardson, MJ, Melbourne: University of Melbourne , 2016Conference paper, Published paper (Refereed)
Abstract [en]

The confluence between hydropower tailrace and the old river bed in Stornorrfors in the river Umeälven in the northern part of Sweden has shown to be the largest obstacle for upstream migrating salmon and sea trout during the migrating season. Fish are attracted to the high flow rate from the tailrace and will not migrate upstream in the old river bed being the passage to the fishway leading past the hydropower dam. By triangulating the movements of radio tagged fish using eight antennas in the confluence, it is here possible to describe the individual fish tracks left by radio tagged fish during the migrating season. These tracks are then compared with three-dimensional Computational Fluid Dynamics (CFD) simulations of the confluence. By simulating the most common combinations of turbine flow and spill flow in the old river bed it is then possible to find correlations between individual fish movements and flow parameters such as velocity, turbulence intensity or vorticity for different flow combinations. It was previously assumed that fish had trouble locating the old river bed, the results of the triangulation however shows that most fish finds the old river bed within a few days but does not chose to migrate until several days (or weeks) later. The main issue to be solved is therefore not how to attract the fish to the old river bed but rather how to create favorable conditions in the old river bed so that migrating fish are more inclined to take that path upstream.

Place, publisher, year, edition, pages
Melbourne: University of Melbourne , 2016.
National Category
Fluid Mechanics and Acoustics
Research subject
Fluid Mechanics
Identifiers
URN: urn:nbn:se:ltu:diva-31637ISI: 000401732900126Local ID: 5e2073d5-25db-4083-a0d8-5c4ab5ab21fbISBN: 978-0-7340-5339-8 (print)OAI: oai:DiVA.org:ltu-31637DiVA: diva2:1004871
Conference
International Symposium on Ecohydraulics : 07/02/2016 - 12/02/2016
Note

Godkänd; 2016; 20160418 (gunhel)

Available from: 2016-09-30 Created: 2016-09-30 Last updated: 2017-11-29Bibliographically approved

Open Access in DiVA

fulltext(685 kB)121 downloads
File information
File name FULLTEXT01.pdfFile size 685 kBChecksum SHA-512
4a469f526baa38aa1ddbae8e592f50a551cfc0b9ba4c15897365fe99dc286b7d5072e3f8160de519355fc2ce6da0dd9e003e7811ee8dc3b51f0ee70c943624a5
Type fulltextMimetype application/pdf

Search in DiVA

By author/editor
Andersson, AndersLundström, StaffanHellström, Gunnar
By organisation
Fluid and Experimental Mechanics
Fluid Mechanics and Acoustics

Search outside of DiVA

GoogleGoogle Scholar
Total: 121 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

isbn
urn-nbn

Altmetric score

isbn
urn-nbn
Total: 269 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf